Eutarsopolipus porteri n. sp. (Acari: Podapolipidae) is described from HarpaIus herbivagus and E. elongatus is reported for the first time in North America from Amara aenea (Coleoptera: Carabidae) from Fort Custer State Recreation Area, Kalamazoo County, Michigan. Of the 7 species of Podapolipidae known from American Carabidae, E. elongatus was introduced with Amara aenea and the others are native species. All are parasites restricted to Carabidae

Husband, Robert W

English

ValpoScholar

The Great Lakes Entomologist 
Volume 26 
Number 1 - Spring 1993 Number 1 - Spring 1993 Article 1 
April 1993 
A New Eutarsopolipus (Acari: Podapolipidae); Parasite of 
Harpalus Herbivagus (Coleoptera: Carabidae) From Michigan 
Robert W. Husband 
Adrian College 
Follow this and additional works at: https://scholar.valpo.edu/tgle 
 Part of the Entomology Commons 
Recommended Citation 
Husband, Robert W. 1993. "A New Eutarsopolipus (Acari: Podapolipidae); Parasite of Harpalus Herbivagus 
(Coleoptera: Carabidae) From Michigan," The Great Lakes Entomologist, vol 26 (1) 
Available at: https://scholar.valpo.edu/tgle/vol26/iss1/1 
This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. 
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For more information, please contact a ValpoScholar staff member at scholar@valpo.edu. 
1993 THE GREAT LAKES ENTOMOLOGIST 
A NEW EUTARSOPOLIPUS (ACARI: PODAPOLIPIDAE); P RASITE 

OF HARPALUS HERBIVAGUS (COLEOPTERA: CARABIDAE) 

FROM MICHIGAN1 

Robert W. Husband2 
ABSTRACT 
Eutarsopolipus porteri n. sp. (Acari: Podapolipidae) is described from Harpa­
Ius 
herbivagus 
and E. elongatus is reported for the first time in North America 
from Amara aenea (Coleoptera: Carabidae) from Fort Custer State Recreation 
Area, Kalamazoo County, Michigan. Of the 7 species of Podapolipidae known 
from American Carabidae, E. elongatus was introduced with Amara aenea and 
the others are native species. All are parasites restricted to Carabidae. 
Lindquist (1986) placed Podapolipidae adjacent to Tarsonemidae within 
the 
Tarsonemoidea (Heterostigmata). 
In adaptation to a parasitic mode of life, 
podapolipids exhibit very unusual characters. These include loss of 1 to 3 pairs
of legs in females. migration of the aedeagus to a posterior, middorsal or 
anterior position and loss of leg setation. Podapolipid mites which are para­
sites of carabid beetles were considered to be among the most primitive poda­
polipid mites by Regenfuss (1973), Eickwort (1975) and Husband (1991). Six 
species of podapolipid mites have been described from North American Carab­
idae. These species have been assigned to three genera, Ovacarus, Eutarsopo­
/ipus and Dorsipes. Stannard and Vaishampayan (1971) described Ovacarus 
clivinae from oviducts of Clivina impressifrons LeConte from Illinois. Hus­
band (1974) 
described the second species. 
Ovacarus peellei from the oviducts 
of Pasimachus elongatus LeConte from North Dakota. Regenfuss (1974) 
described Eutarsopolipus latus from beneath the elytra of Chlaenius aestivus 
Say and E. 
inermis 
from Evarthrus furtiva LeConte from Georgia. Husband 
and Swihart (1986) described E. regenfussi from Chlaenius pennsylvanicus 
Say from Michigan. Husband and Rack (1991) described Dorsipes evarthrusi 
from Evarthrus americanus Dejean from Georgia. Studies are continuing on 
undescribed Eutarsopolipus from Canada and the Eastern United States col­
lected by the author or obtained from E. E. Lindquist (Biosystemstics 
Research Centre, Ottawa, Canada) and G. C. Eickwork (Dept. of Entomology, 
Cornell Univ., Ithaca, NY). The present paper deals with two species of Eutar­
sopolipus associated with carabid beetles collected in pitfall traps in Western 
Michigan by Lee Williams and T. Wayne Porter. 
Utilizing characters from Regenfuss (1968 and 1974), the mites removed 
from two host individuals were determined to be E. elongatus (Regenfuss 
1968) which had been described from the vicinity of Erlangen, Germany and a 
lContribution Number 709, Kellogg Biological Station of Michigan State Univer­
sity, :J!ickory Corners, MI. 
Biology Dept., Adrian College, Adrian, MI 49221. 
1
Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <
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2 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 
new species related to E. elongatus and E. pseudopus Regenfuss 1974. This 
species is described and compared with related species. 
METHODS AND MATERIALS 
Beetles 
trapped in cans containing ethylene glycol were individually 
inspected for mites, then flushed with 70% ethanol to remove remaining 
mites. More than 20 mites, with all stages represented, were removed from 
one hind wing base of one beetle. Two mites were removed from a second 
beetle. Some specimens were placed in lactic acid for clearing before mounting. 
Long setae 
are often broken, reflexed 
and not in horizontal positions in prepa­
rations 
of podapolipid mites. Measurements included 
in this paper are of 
entire setae. Mites were examined, drawn and measured with a Wild-He rbrug 
phase contrast 
microscope 
fitted with a drawing apparatus and stage microm­
eter. Terminology follows that of Lindquist (1986). All measurements are 
given in micrometers (/illl). 
Eutarsopolipus porten new species 
Female: (Figs. 1,2)-Dimensions as in Table 1. Gnathosoma elongate, 
length 44-50, width 40-41; dorsal setae 28, ventral setae 12; cheliceral styl ts 
40-42. Idiosoma-Length 470-490, width 263-312. Stigmata near anterola­
teral margin of 
prodorsal shield, tracheal branches 
meet medially to form a V 
under anterior margin of prodorsal plate. Set e VI' Vi vestigial, length at most 
112 
width of 
setal socket. Setae SCz 39, extending well beyond posterior border 
of prodorsal plate. Plate C length 80-85, width 240-252; setae CI 13, cJl micro­
setae. Plate D length 73, widtb 206. seta d 8. Plate EF length 49, width 180; 
setae f 3. Venter with apodemes heavily sclerotized, apodemes 1 meet at ante­
rior margin of sternal apodeme. apodemes 2 meet at posterior margin of ster­
nal 
apodeme. Coxae 
III separated. Setae hilO, distance between setae hI 12. 
Setal 
numbers, including solenidia. for egs I, 
II, III as in Table 2. Length 
of 
solenidion omega on leg I 
about 2 times width, on leg II omega l ngth 
nearly equals width. Solenidion phi on leg I 9, adjacent seta k 4; seta k thic . 
Coxal setae la, 2a 8, lancet-like, setae originate well posterior of apodeme 1.
Setae 3a 6, 3b 7. Claw on leg I prominent, no claws on legs II, III. 
Male: (Figs. 3,4)-Dimensions in Table 1. Gnathosoma length 30-33, width 
28-33; dorsal setae 9-11, ventral setae 5-6; cheliceral stylets 2325. Idiosoma­
Len~h 
173-183, width 122-132. Prodorsal shield wider 
than long, setae vl.' V2 
vestigial, setae SC2 34. Plates CD fused, setae c, d microsetae. Genital plate 
length 
40-47, width 40-45. Venter 
with apodemes 1 meeting at sternal apo­
deme, apodemes 2 nearly so. Coxae III separated. 
Legs. Setal numbers as in Table 2. Spine-like seta on tarsi II. III well 
developed, claws absent. Seta la, 2a 3, both setae thin. Setae 3a, 3b 
microsetae. 
Larva: (Figs. 5,6)-Dimensions as in Table 1. Gnathosoma length 35-38, 
width 29-34, dorsal setae 28,ventral set e 12; cheliceral styl ts 30. Idiosoma­
Length 
168-182, 
width 117-142. Setae v\' t:.t and C2 microsetae. setae SC2 110. 
Plates C fused with plate D posteriomedially; setae CI 13-18, d 11-13, both 
setae 
thick, lancet-shaped. 
Plate EF wider than long, setae f 9, thin and 
extending to posterior margin of plate EF. Apodemes 1 and 2 meet sternal 
apodeme near mid coxae II, coxae III separated. Setae hI 180, h2 25; distal 
margin 
of 
h2 closely apresssed to setae hj' Distance between setae hI 19. 
Legs. Leg segment setation as in Table 2. Tarsus I solenidion omega 2, 
2
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1993 THE GREAT LAKES ENTOMOLOGIST 3 

E 
E 
(II) 
• 
o 
-r~-...... --=~ 
1 
Figure 1. Eutarsopoiipus porteri n. sp., female, dorsal. 
3
Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <
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4 
2 
THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 
0.1 mm 
I ' 
~--~~ 
~~~ 

~-
Figure 2a-c. 2a. Eutarsapalipus parten n. sp., female, gnathosoma and legs I, dorsal; 
ventral aspect 
of 
right leg I.; 2b. Eutarsapalipus parten n. sp., female, ventral, coxae I, 
II.; 2c. Eutarsapolipus parten n. sp., female, ventral, etae hI' 
tibial solenidion phi 8 with adjacent seta k 3. Coxal setae la 9, 2a 10; setae 3a 
10, 
3b 
8. All coxal setae thick, lancet-shaped. 
Type data: Holotype larva: Fort Custer Recreation Area, Twp. 2 S, Range 
9 W" Sec. 23, Kalamazoo County, Michigan, from Harpalus herbivagus Say 
(Carabidae), collected 30 July 1991 by Lee Williams. Deposited in the Museum 
of Zoology, the University of Michigan, Ann Arbor, MI (RWH 730911-4). The 
type host 
is located 
in the Museum of Zoology, University of Michigan. Para­
types (3 
males, 8 females, 9 larvae)-same 
data as holotype: 1 male (RWH 
73091-1-1), 1 female (RWH 73091-1-12), 1 larva (RWH 7309101-5) deposited 
in the 
Acarology Collection of 
the Museum of Zoology, University of Michi­
gan, Ann Arbor, Michigan. One male (RWH 93091-1-3), 1 female (RWH 
93091-1-13), 1 larva (RWH 73091-1-6) deposited in the Zoologisches Museum, 
Universitat 
Hamburg. The balance of 
paratypes are stored in the Acarology 
Collection, Biology Department, Adrian College, Adrian, Michigan. Addi­
tional specimens are stored in a vial with 70% alcohol in the Acarology Collec­
tion at Adrian College. 
Etymology: The species is named for Dr. T. Wayne Porter in tribute to his 
4
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1993 THE GREAT LAKES ENTOMOLOGIST 5 
Table 1. Selected measurements for Eutarsopolipus spp. All measurements are in micrometers 
(I'm). 
Setae designated as vestigial 
(v) are represented by tiny spots. Setae designated as 
microsetae (m) are no longer than th diameter of the setal socket. The letter T after a setal 
measurement indicates that the seta is conspicuously thicker than mo t setae. The lett r t 
indicates somewhat thicker than most setae. . 
E. porten E. elongatus E. pseudopus E. regenfussi 
FEMALES 
Idiosomal length 480 515 440 300 
Idiosomal width 288 270 190 192 
Dorsal Gnath. setae 28 16 20 19 
Vent. Gnath. setae 12 8 4 m 
Cheliceral stylets 42 34 38 43 
Setae vJ/v2 V C m m 
Setae sC2 39 40 10 24 
Setae f 3 S S m 
Setae la,2a ST 5/7 514 m 
LARVAE 
Idiosomal length 175 350 190 144 
Idiosomal width 130 330 105 lOS 
C heliceral stylets 30 33 25 27 
Dorsal Gnath. setae 2S 21 IS 19 
Vent. Gnath. setae 12 9 4 m 
Setae vl/v2 
Setae Cl 
v 
1ST 
v 
12t v 5T 3 
3 
Dist. 
cJcJ 37 72 22 47 
Setae 
13T lOt 5T 3 
Distance 
d-d 33 42 25 30 
Setae f 9 10 4 3 
Coxal setae la 9T 5 7T m 
Coxal setae 2a lOT 5T 6T m 
Coxal setae 3a lOT 13t lOT 4 
Coxal setae 3b ST 6T lOT 6 
MALE 
Idiosomallength 17S ISO 
136 
Idiosomal width 127 115 99 
Cheliceral 
stylets 24 22 22 
Vent Gnath. setae 6 2 2 
Gen. pl. midwidth 
Coxal setae la 
45 
3 
27 
m 
32 
m 
Coxal setae 2a 3 m m 
Table 2. Leg setation for femur, genu, tibia, tarsus for Michigan Eut rsopolipus and E. 
pseudopus. Solenidia are included. 
Leg I Leg II Leg III 

F G Ti Ta F G Ti Ta F G Ti Ta 

E. porten 2 2 7 S 0 1 4 6 0 1 4 5 
E. elongatus 2 2 7 S 0 1 4 6 0 1 4 5 
E. pseudopus 3 2 7 9 0 1 4 7 0 1 4 6 
E. regenfussi 2 0 7 S 0 0 4 6 0 0 4 5 
5
Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <
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6 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 
E 
E 
,... 
o 
3 
Figure 3. Eutarsopolipus porten n. sp., male, dorsal. 
6
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1993 THE GREAT LAKES ENTOMOLOGIST 7 
4 

Figure 4. Eutarsopolipus porteri n. sp.• male. ventral. 
7
Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <
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8 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 
"y e1 
C!J y 2 
5 
E 
E
,..
. 
o 
Figure 5. Eutarsopolipus porteri n. sp., larva, dorsal. 
helping of students at W. K. Kellogg Biological Station for 37 years and in 
recognition of his 80th birthday on August 8, 1991. 
Diagnosis: Female E. porten differ from E. elongatus in having coxal 
setae la and 2a removed from apodemes 1 and 2. These setae are thicker than 
those illustrated for E. elongatus by Regenfuss (1974) and confirmed by com­
parison with local E. elongatus. Setae la and 2a are thinner than th respec­
tive setae in larval stages. Cheliceral stylets are equal to the width of the 
gnathosoma in E. porten but are shorter in E. elongatus. Males of E. longa­
8
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1993 THE GREAT LAKES ENTOMOLOGIST 9 
6 
Figure 6. Eutarsapolipus parten n. sp., larva, ventral. 
tus are unknown. Larval E. porteri have longer coxal setae la, 2a and 3b than 
are found in E. elongatus but setae 3a are shorter. Setae CI and d are slightly 
longer and thicker in E. porteri. 
9
Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <
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10 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No. I 

E 
E 
('W) 
• 
o 
Figure 7. Eutarsopolipus elongatus Regenfuss, female, dorsal 
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1993 THE GREAT LAKES ENTOMOLOGIST 11 
Figure Sa, h. Sa. Eutarsopolipus elongatus Regenfuss, female, gnathosoma nd legs I, 
dorsal; ventral aspect of right leg I; 8b. Eutarsopolipus elongatus Regenfuss, female, 
ventral, coxae I, II. 
Eutarsopolipus elongatus Regenfuss 
A female and a swollen larva of E. elongatus were removed from Amara 
aenea DeGeer. a carabid eetle introduced from Europe. A. aenea is the host 
for E. elongatus in Europe. A female E. elongatus is illustrated by Regenfuss 
(1974). Both female and larvalE. elongatus from Michigan are illustrated here 
for comparison with E. porten (Figures 7, 8, 9). This is the first record of an 
introduction of a podapolipid mite from carabid beetles to North America. 
Since A. aenea is widely distributed in Michigan, the introduced mites may be 
encountered fairly often and a detailed description is necessary. 
11
Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <
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12 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 
A 

) \ 
9 

c 
Figure 9. a-c. 9a. Eutarsopolipus elongatus Regenfuss. larva, dorsal, propodosoma; 9b. 
Eutarsopolipus elongatus Regenfuss. larva, ventral. coxae I. II; 9c. Eutarsopolipus 
elongatus Regenfuss, larva. ventral, coxae III. 
DISCUSSION 
Regenfuss (1968) utilized the following characters in assembling five 
Eutarsopolipus species into a cluster of related species: in females, (1) setae VI 
and V2 
no longer 
than setal socket, (2) apodeme III lacking, (3) setae SCI absent 
and 
(4)ambulacra 
II and III without claws. In addition, Regenfuss character­
ized this group by: (1) females with a long, stout femoral I l' seta, (2) larvae 
with setae hI idely separated and (3) males with genital plat about as broad 
as long. The single male specimenin this ~oup observed by Regenfuss was 
the 
male of 
E. acanthomus and it was not illustrated. Included in this group 
were: E. acanthomus, E. alarum, E. assimilis, E. crassisetus and E. elongatus. 
12
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1993 THE GREAT LAKES ENTOMOLOGIST 13 
In 1974, Regenfuss addedE.pseudopus to this subset ofthe genus Eutarsopo­
lipus, and E. porten also shares the characteristics of this group. The other 
North American Eutarsopolipus species belong to different species groups. 
Regenfuss (1974) placed E. latus and E. inermis, collected in Georgia, with E. 
desani and E. pterostichi respectively. Husband and Swihart (1986) placed E. 
regenfussi, collected in Northern Michigan, near E. latus.
Within the cluster of mites that includes E. porten, the new species shares 
the 
thickened larval coxal setae 
la and 2a with E. pseudopus, E. elongatus, E. 
alarum and E. crassisetus. Eutarsopolipus regenfussi is included in Tables 1 
and 2 for comparison with the remaining more closely related species. The leg 
setal p tterns for all species are not known. However, species related to E. 
porten 
have a 
seta on genua II and III while this seta is absent in E. regen­
fussi (Table 2). Femur I in E. pseudopus has 3 setae in contrast to 2 for other 
species in this discussion. Genu I has 2 setae in E. porten and relatives but 
none in E. regenfussi. Thus, common setal patterns also support the inclusion 
of E. porten within the group proposed by Regenfuss. 
ACKNOWLEDGMENTS 
I thank Lee Williams for aid in obtaining the beetles, T. W. Porter for help 
in determining th specific collecting sites, Gary Dunn for identification and 
information on the host carabid beetles, the staff of the W. K. Kellogg Biologi­
cal Station of Michigan State University for support during this study. 
LITERATURE CITED 
Eickwort, G. C. 1975. A new species of Chrysomelobia (Acari: Tarsonemina: Podapolipi­
dae) from North America and the taxonomic position of the genus. Canad. Entomol. 
107: 613-626. 
Husband, Robert W. 1974. Ovacarus peellei, a new species of mite (Acarina: Podapolipi­
dae) associated with the carabid Pasimachus elongatus. Great Lakes Entomol. 
7(1):1-7. 
1991. A preliminary investigation of the phylogeny of Tarsopolipus, a compari­
son with other early derivative genera. Pp. 193205, In: F. Dusbabek and V. Bukva, 
OOs., 
Modem Acarology, 
Vol. 1, SPB Academic Publishing bv., The Hague and Aca­
demia, Prague. 
Husband, Robert W. and Gisela Rack. 1991. Dorsipes evarthrusi sp.n. (Acari: Podapoli­
pidae), ectoparasite of Evarthrus americanus (Carabidael from Georgia, U.S.A. Ento­
mol. Mitt. zool Mus. Hamburg 10:127-136. 
Husband, Robert W. and Cheryl D. Swihart. 1986. A new species of mite (Acari: Podapo­
lipidae) from a Michigan carabid beetle, Chlaenius pennsylvanicus. Great Lakes Ento­
mol. 19:107-113. 
Lindquist, E. E. 1986. The world genera of Tarsonemidae (Acari: Heterostigmata): a 
morphological, phylogenetic, and systematic revision, with a reclassification of 
family-group taxa in the Heterostigmata. Mem. Ent. Soc. Canada 136:1-517. Ottawa. 
Regenfuss, H. 1968. Untersuchungen zur Morphologie, Systematik und Okologie der 
Podapolipidae (Acarina, Tarsonemini). Z. wiss. Zool. 177: 183-282. Leipzig. 
__. 1973. BeinrOOuktion und Verlagerung des Koppulationsapparates in der Milben­
familie Podapolipidae. ein Beispiel fur verhaltensfesteuerte Evolution morphologis­
cher Structuren. Z. zool. Systematik u. Evolutionsforschung 11:173-195. 
13
Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <
Published by ValpoScholar, 1993
14 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 
1974. Neue ektoparasitische Arten der Familie PodapoJipidae (Acari: Tar­
sonemini) von Carabiden. Mitt. Hamburg. Zool Mus. Inst. 71:147-163. Hamburg. 
Stannard, L. J. and S. M. Vaishampayan. 1971 Ovacarus clivinae, new genus and 
species (Acarina: Podapolipidae), an endoparasite of the slender seedcorn beetle. Ann. 
Entomol. Soc. Amer. 64:887-890. 
14
The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1
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A New \u3ci\u3eEutarsopolipus\u3c/i\u3e (Acari: Podapolipidae); Parasite of \u3ci\u3eHarpalus Herbivagus\u3c/i\u3e (Coleoptera: Carabidae) From Michigan

Valparaiso University

The Great Lakes Entomologist Volume 26 Number 1 - Spring 1993 Number 1 - Spring 1993 Article 1 April 1993 A New Eutarsopolipus (Acari: Podapolipidae); Parasite of Harpalus Herbivagus (Coleoptera: Carabidae) From Michigan Robert W. Husband Adrian College Follow this and additional works at: https://scholar.valpo.edu/tgle Part of the Entomology Commons Recommended Citation Husband, Robert W. 1993. "A New Eutarsopolipus (Acari: Podapolipidae); Parasite of Harpalus Herbivagus (Coleoptera: Carabidae) From Michigan," The Great Lakes Entomologist, vol 26 (1) Available at: https://scholar.valpo.edu/tgle/vol26/iss1/1 This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. It has been accepted for inclusion in The Great Lakes Entomologist by an authorized administrator of ValpoScholar. For more information, please contact a ValpoScholar staff member at scholar@valpo.edu. 1993 THE GREAT LAKES ENTOMOLOGIST A NEW EUTARSOPOLIPUS (ACARI: PODAPOLIPIDAE); P RASITE OF HARPALUS HERBIVAGUS (COLEOPTERA: CARABIDAE) FROM MICHIGAN1 Robert W. Husband2 ABSTRACT Eutarsopolipus porteri n. sp. (Acari: Podapolipidae) is described from Harpa­Ius herbivagus and E. elongatus is reported for the first time in North America from Amara aenea (Coleoptera: Carabidae) from Fort Custer State Recreation Area, Kalamazoo County, Michigan. Of the 7 species of Podapolipidae known from American Carabidae, E. elongatus was introduced with Amara aenea and the others are native species. All are parasites restricted to Carabidae. Lindquist (1986) placed Podapolipidae adjacent to Tarsonemidae within the Tarsonemoidea (Heterostigmata). In adaptation to a parasitic mode of life, podapolipids exhibit very unusual characters. These include loss of 1 to 3 pairsof legs in females. migration of the aedeagus to a posterior, middorsal or anterior position and loss of leg setation. Podapolipid mites which are para­sites of carabid beetles were considered to be among the most primitive poda­polipid mites by Regenfuss (1973), Eickwort (1975) and Husband (1991). Six species of podapolipid mites have been described from North American Carab­idae. These species have been assigned to three genera, Ovacarus, Eutarsopo­/ipus and Dorsipes. Stannard and Vaishampayan (1971) described Ovacarus clivinae from oviducts of Clivina impressifrons LeConte from Illinois. Hus­band (1974) described the second species. Ovacarus peellei from the oviducts of Pasimachus elongatus LeConte from North Dakota. Regenfuss (1974) described Eutarsopolipus latus from beneath the elytra of Chlaenius aestivus Say and E. inermis from Evarthrus furtiva LeConte from Georgia. Husband and Swihart (1986) described E. regenfussi from Chlaenius pennsylvanicus Say from Michigan. Husband and Rack (1991) described Dorsipes evarthrusi from Evarthrus americanus Dejean from Georgia. Studies are continuing on undescribed Eutarsopolipus from Canada and the Eastern United States col­lected by the author or obtained from E. E. Lindquist (Biosystemstics Research Centre, Ottawa, Canada) and G. C. Eickwork (Dept. of Entomology, Cornell Univ., Ithaca, NY). The present paper deals with two species of Eutar­sopolipus associated with carabid beetles collected in pitfall traps in Western Michigan by Lee Williams and T. Wayne Porter. Utilizing characters from Regenfuss (1968 and 1974), the mites removed from two host individuals were determined to be E. elongatus (Regenfuss 1968) which had been described from the vicinity of Erlangen, Germany and a lContribution Number 709, Kellogg Biological Station of Michigan State Univer­sity, :J!ickory Corners, MI. Biology Dept., Adrian College, Adrian, MI 49221. 1Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <Published by ValpoScholar, 19932 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 new species related to E. elongatus and E. pseudopus Regenfuss 1974. This species is described and compared with related species. METHODS AND MATERIALS Beetles trapped in cans containing ethylene glycol were individually inspected for mites, then flushed with 70% ethanol to remove remaining mites. More than 20 mites, with all stages represented, were removed from one hind wing base of one beetle. Two mites were removed from a second beetle. Some specimens were placed in lactic acid for clearing before mounting. Long setae are often broken, reflexed and not in horizontal positions in prepa­rations of podapolipid mites. Measurements included in this paper are of entire setae. Mites were examined, drawn and measured with a Wild-He rbrug phase contrast microscope fitted with a drawing apparatus and stage microm­eter. Terminology follows that of Lindquist (1986). All measurements are given in micrometers (/illl). Eutarsopolipus porten new species Female: (Figs. 1,2)-Dimensions as in Table 1. Gnathosoma elongate, length 44-50, width 40-41; dorsal setae 28, ventral setae 12; cheliceral styl ts 40-42. Idiosoma-Length 470-490, width 263-312. Stigmata near anterola­teral margin of prodorsal shield, tracheal branches meet medially to form a V under anterior margin of prodorsal plate. Set e VI' Vi vestigial, length at most 112 width of setal socket. Setae SCz 39, extending well beyond posterior border of prodorsal plate. Plate C length 80-85, width 240-252; setae CI 13, cJl micro­setae. Plate D length 73, widtb 206. seta d 8. Plate EF length 49, width 180; setae f 3. Venter with apodemes heavily sclerotized, apodemes 1 meet at ante­rior margin of sternal apodeme. apodemes 2 meet at posterior margin of ster­nal apodeme. Coxae III separated. Setae hilO, distance between setae hI 12. Setal numbers, including solenidia. for egs I, II, III as in Table 2. Length of solenidion omega on leg I about 2 times width, on leg II omega l ngth nearly equals width. Solenidion phi on leg I 9, adjacent seta k 4; seta k thic . Coxal setae la, 2a 8, lancet-like, setae originate well posterior of apodeme 1.Setae 3a 6, 3b 7. Claw on leg I prominent, no claws on legs II, III. Male: (Figs. 3,4)-Dimensions in Table 1. Gnathosoma length 30-33, width 28-33; dorsal setae 9-11, ventral setae 5-6; cheliceral stylets 2325. Idiosoma­Len~h 173-183, width 122-132. Prodorsal shield wider than long, setae vl.' V2 vestigial, setae SC2 34. Plates CD fused, setae c, d microsetae. Genital plate length 40-47, width 40-45. Venter with apodemes 1 meeting at sternal apo­deme, apodemes 2 nearly so. Coxae III separated. Legs. Setal numbers as in Table 2. Spine-like seta on tarsi II. III well developed, claws absent. Seta la, 2a 3, both setae thin. Setae 3a, 3b microsetae. Larva: (Figs. 5,6)-Dimensions as in Table 1. Gnathosoma length 35-38, width 29-34, dorsal setae 28,ventral set e 12; cheliceral styl ts 30. Idiosoma­Length 168-182, width 117-142. Setae v\' t:.t and C2 microsetae. setae SC2 110. Plates C fused with plate D posteriomedially; setae CI 13-18, d 11-13, both setae thick, lancet-shaped. Plate EF wider than long, setae f 9, thin and extending to posterior margin of plate EF. Apodemes 1 and 2 meet sternal apodeme near mid coxae II, coxae III separated. Setae hI 180, h2 25; distal margin of h2 closely apresssed to setae hj' Distance between setae hI 19. Legs. Leg segment setation as in Table 2. Tarsus I solenidion omega 2, 2The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1https://scholar.valpo.edu/tgle/vol26/iss1/11993 THE GREAT LAKES ENTOMOLOGIST 3 E E (II) • o -r~-...... --=~ 1 Figure 1. Eutarsopoiipus porteri n. sp., female, dorsal. 3Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <Published by ValpoScholar, 19934 2 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 0.1 mm I ' ~--~~ ~~~ ~-Figure 2a-c. 2a. Eutarsapalipus parten n. sp., female, gnathosoma and legs I, dorsal; ventral aspect of right leg I.; 2b. Eutarsapalipus parten n. sp., female, ventral, coxae I, II.; 2c. Eutarsapolipus parten n. sp., female, ventral, etae hI' tibial solenidion phi 8 with adjacent seta k 3. Coxal setae la 9, 2a 10; setae 3a 10, 3b 8. All coxal setae thick, lancet-shaped. Type data: Holotype larva: Fort Custer Recreation Area, Twp. 2 S, Range 9 W" Sec. 23, Kalamazoo County, Michigan, from Harpalus herbivagus Say (Carabidae), collected 30 July 1991 by Lee Williams. Deposited in the Museum of Zoology, the University of Michigan, Ann Arbor, MI (RWH 730911-4). The type host is located in the Museum of Zoology, University of Michigan. Para­types (3 males, 8 females, 9 larvae)-same data as holotype: 1 male (RWH 73091-1-1), 1 female (RWH 73091-1-12), 1 larva (RWH 7309101-5) deposited in the Acarology Collection of the Museum of Zoology, University of Michi­gan, Ann Arbor, Michigan. One male (RWH 93091-1-3), 1 female (RWH 93091-1-13), 1 larva (RWH 73091-1-6) deposited in the Zoologisches Museum, Universitat Hamburg. The balance of paratypes are stored in the Acarology Collection, Biology Department, Adrian College, Adrian, Michigan. Addi­tional specimens are stored in a vial with 70% alcohol in the Acarology Collec­tion at Adrian College. Etymology: The species is named for Dr. T. Wayne Porter in tribute to his 4The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1https://scholar.valpo.edu/tgle/vol26/iss1/11993 THE GREAT LAKES ENTOMOLOGIST 5 Table 1. Selected measurements for Eutarsopolipus spp. All measurements are in micrometers (I'm). Setae designated as vestigial (v) are represented by tiny spots. Setae designated as microsetae (m) are no longer than th diameter of the setal socket. The letter T after a setal measurement indicates that the seta is conspicuously thicker than mo t setae. The lett r t indicates somewhat thicker than most setae. . E. porten E. elongatus E. pseudopus E. regenfussi FEMALES Idiosomal length 480 515 440 300 Idiosomal width 288 270 190 192 Dorsal Gnath. setae 28 16 20 19 Vent. Gnath. setae 12 8 4 m Cheliceral stylets 42 34 38 43 Setae vJ/v2 V C m m Setae sC2 39 40 10 24 Setae f 3 S S m Setae la,2a ST 5/7 514 m LARVAE Idiosomal length 175 350 190 144 Idiosomal width 130 330 105 lOS C heliceral stylets 30 33 25 27 Dorsal Gnath. setae 2S 21 IS 19 Vent. Gnath. setae 12 9 4 m Setae vl/v2 Setae Cl v 1ST v 12t v 5T 3 3 Dist. cJcJ 37 72 22 47 Setae 13T lOt 5T 3 Distance d-d 33 42 25 30 Setae f 9 10 4 3 Coxal setae la 9T 5 7T m Coxal setae 2a lOT 5T 6T m Coxal setae 3a lOT 13t lOT 4 Coxal setae 3b ST 6T lOT 6 MALE Idiosomallength 17S ISO 136 Idiosomal width 127 115 99 Cheliceral stylets 24 22 22 Vent Gnath. setae 6 2 2 Gen. pl. midwidth Coxal setae la 45 3 27 m 32 m Coxal setae 2a 3 m m Table 2. Leg setation for femur, genu, tibia, tarsus for Michigan Eut rsopolipus and E. pseudopus. Solenidia are included. Leg I Leg II Leg III F G Ti Ta F G Ti Ta F G Ti Ta E. porten 2 2 7 S 0 1 4 6 0 1 4 5 E. elongatus 2 2 7 S 0 1 4 6 0 1 4 5 E. pseudopus 3 2 7 9 0 1 4 7 0 1 4 6 E. regenfussi 2 0 7 S 0 0 4 6 0 0 4 5 5Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <Published by ValpoScholar, 19936 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 E E ,... o 3 Figure 3. Eutarsopolipus porten n. sp., male, dorsal. 6The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1https://scholar.valpo.edu/tgle/vol26/iss1/11993 THE GREAT LAKES ENTOMOLOGIST 7 4 Figure 4. Eutarsopolipus porteri n. sp.• male. ventral. 7Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <Published by ValpoScholar, 19938 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 "y e1 C!J y 2 5 E E,... o Figure 5. Eutarsopolipus porteri n. sp., larva, dorsal. helping of students at W. K. Kellogg Biological Station for 37 years and in recognition of his 80th birthday on August 8, 1991. Diagnosis: Female E. porten differ from E. elongatus in having coxal setae la and 2a removed from apodemes 1 and 2. These setae are thicker than those illustrated for E. elongatus by Regenfuss (1974) and confirmed by com­parison with local E. elongatus. Setae la and 2a are thinner than th respec­tive setae in larval stages. Cheliceral stylets are equal to the width of the gnathosoma in E. porten but are shorter in E. elongatus. Males of E. longa­8The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1https://scholar.valpo.edu/tgle/vol26/iss1/11993 THE GREAT LAKES ENTOMOLOGIST 9 6 Figure 6. Eutarsapolipus parten n. sp., larva, ventral. tus are unknown. Larval E. porteri have longer coxal setae la, 2a and 3b than are found in E. elongatus but setae 3a are shorter. Setae CI and d are slightly longer and thicker in E. porteri. 9Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <Published by ValpoScholar, 199310 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No. I E E ('W) • o Figure 7. Eutarsopolipus elongatus Regenfuss, female, dorsal 10The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1https://scholar.valpo.edu/tgle/vol26/iss1/11993 THE GREAT LAKES ENTOMOLOGIST 11 Figure Sa, h. Sa. Eutarsopolipus elongatus Regenfuss, female, gnathosoma nd legs I, dorsal; ventral aspect of right leg I; 8b. Eutarsopolipus elongatus Regenfuss, female, ventral, coxae I, II. Eutarsopolipus elongatus Regenfuss A female and a swollen larva of E. elongatus were removed from Amara aenea DeGeer. a carabid eetle introduced from Europe. A. aenea is the host for E. elongatus in Europe. A female E. elongatus is illustrated by Regenfuss (1974). Both female and larvalE. elongatus from Michigan are illustrated here for comparison with E. porten (Figures 7, 8, 9). This is the first record of an introduction of a podapolipid mite from carabid beetles to North America. Since A. aenea is widely distributed in Michigan, the introduced mites may be encountered fairly often and a detailed description is necessary. 11Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <Published by ValpoScholar, 199312 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 A ) \ 9 c Figure 9. a-c. 9a. Eutarsopolipus elongatus Regenfuss. larva, dorsal, propodosoma; 9b. Eutarsopolipus elongatus Regenfuss. larva, ventral. coxae I. II; 9c. Eutarsopolipus elongatus Regenfuss, larva. ventral, coxae III. DISCUSSION Regenfuss (1968) utilized the following characters in assembling five Eutarsopolipus species into a cluster of related species: in females, (1) setae VI and V2 no longer than setal socket, (2) apodeme III lacking, (3) setae SCI absent and (4)ambulacra II and III without claws. In addition, Regenfuss character­ized this group by: (1) females with a long, stout femoral I l' seta, (2) larvae with setae hI idely separated and (3) males with genital plat about as broad as long. The single male specimenin this ~oup observed by Regenfuss was the male of E. acanthomus and it was not illustrated. Included in this group were: E. acanthomus, E. alarum, E. assimilis, E. crassisetus and E. elongatus. 12The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1https://scholar.valpo.edu/tgle/vol26/iss1/11993 THE GREAT LAKES ENTOMOLOGIST 13 In 1974, Regenfuss addedE.pseudopus to this subset ofthe genus Eutarsopo­lipus, and E. porten also shares the characteristics of this group. The other North American Eutarsopolipus species belong to different species groups. Regenfuss (1974) placed E. latus and E. inermis, collected in Georgia, with E. desani and E. pterostichi respectively. Husband and Swihart (1986) placed E. regenfussi, collected in Northern Michigan, near E. latus.Within the cluster of mites that includes E. porten, the new species shares the thickened larval coxal setae la and 2a with E. pseudopus, E. elongatus, E. alarum and E. crassisetus. Eutarsopolipus regenfussi is included in Tables 1 and 2 for comparison with the remaining more closely related species. The leg setal p tterns for all species are not known. However, species related to E. porten have a seta on genua II and III while this seta is absent in E. regen­fussi (Table 2). Femur I in E. pseudopus has 3 setae in contrast to 2 for other species in this discussion. Genu I has 2 setae in E. porten and relatives but none in E. regenfussi. Thus, common setal patterns also support the inclusion of E. porten within the group proposed by Regenfuss. ACKNOWLEDGMENTS I thank Lee Williams for aid in obtaining the beetles, T. W. Porter for help in determining th specific collecting sites, Gary Dunn for identification and information on the host carabid beetles, the staff of the W. K. Kellogg Biologi­cal Station of Michigan State University for support during this study. LITERATURE CITED Eickwort, G. C. 1975. A new species of Chrysomelobia (Acari: Tarsonemina: Podapolipi­dae) from North America and the taxonomic position of the genus. Canad. Entomol. 107: 613-626. Husband, Robert W. 1974. Ovacarus peellei, a new species of mite (Acarina: Podapolipi­dae) associated with the carabid Pasimachus elongatus. Great Lakes Entomol. 7(1):1-7. 1991. A preliminary investigation of the phylogeny of Tarsopolipus, a compari­son with other early derivative genera. Pp. 193205, In: F. Dusbabek and V. Bukva, OOs., Modem Acarology, Vol. 1, SPB Academic Publishing bv., The Hague and Aca­demia, Prague. Husband, Robert W. and Gisela Rack. 1991. Dorsipes evarthrusi sp.n. (Acari: Podapoli­pidae), ectoparasite of Evarthrus americanus (Carabidael from Georgia, U.S.A. Ento­mol. Mitt. zool Mus. Hamburg 10:127-136. Husband, Robert W. and Cheryl D. Swihart. 1986. A new species of mite (Acari: Podapo­lipidae) from a Michigan carabid beetle, Chlaenius pennsylvanicus. Great Lakes Ento­mol. 19:107-113. Lindquist, E. E. 1986. The world genera of Tarsonemidae (Acari: Heterostigmata): a morphological, phylogenetic, and systematic revision, with a reclassification of family-group taxa in the Heterostigmata. Mem. Ent. Soc. Canada 136:1-517. Ottawa. Regenfuss, H. 1968. Untersuchungen zur Morphologie, Systematik und Okologie der Podapolipidae (Acarina, Tarsonemini). Z. wiss. Zool. 177: 183-282. Leipzig. __. 1973. BeinrOOuktion und Verlagerung des Koppulationsapparates in der Milben­familie Podapolipidae. ein Beispiel fur verhaltensfesteuerte Evolution morphologis­cher Structuren. Z. zool. Systematik u. Evolutionsforschung 11:173-195. 13Husband: A New Eutarsopolipus (Acari: Podapolipidae); Parasite of <Published by ValpoScholar, 199314 THE GREAT LAKES ENTOMOLOGIST Vol. 26, No.1 1974. Neue ektoparasitische Arten der Familie PodapoJipidae (Acari: Tar­sonemini) von Carabiden. Mitt. Hamburg. Zool Mus. Inst. 71:147-163. Hamburg. Stannard, L. J. and S. M. Vaishampayan. 1971 Ovacarus clivinae, new genus and species (Acarina: Podapolipidae), an endoparasite of the slender seedcorn beetle. Ann. Entomol. Soc. Amer. 64:887-890. 14The Great Lakes Entomologist, Vol. 26, No. 1 [1993], Art. 1https://scholar.valpo.edu/tgle/vol26/iss1/1

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A New \u3ci\u3eEutarsopolipus\u3c/i\u3e (Acari: Podapolipidae); Parasite of \u3ci\u3eHarpalus Herbivagus\u3c/i\u3e (Coleoptera: Carabidae) From Michigan

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