Three new species, Eosentomon antrimense, E. pinusbanksianum, and Berberentulus mcqueeni, and one new record, E. australicum Womersley are added to the known Protura fauna of Michigan. Further records of E. wheeleri Silvestri, Protentomon michiganense Bernard, Proturentomon iowaense Womersley, Acerentulus confinis (Berlese) and Amerentulus amencanus (Ewing) are listed from various parts of the state

B, Ernest C, Bernard

English

ValpoScholar

The Great Lakes Entomologist 
Volume 8 
Number 4 - Winter 1975 Number 4 - Winter 
1975 
Article 3 
December 1975 
New Species and Additional Records of Protura from Michigan 
Ernest C. B Bernard 
Michigan State University 
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 Part of the Entomology Commons 
Recommended Citation 
B, Ernest C. Bernard 1975. "New Species and Additional Records of Protura from Michigan," The Great 
Lakes Entomologist, vol 8 (4) 
Available at: https://scholar.valpo.edu/tgle/vol8/iss4/3 
This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. 
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THE GREAT LAKES ENTOMOLOGlST 
NEW SPECIES AND ADDITIONAL RECORDS 
O F  PROTURA FROM MICHIGAN1 
Ernest C. Bernard2 
ABSTRACT 
Three new species, Eosentomon antrimense, E. pinusbanksianum, and Berberentulus 
mcqueeni, and one new record, E. australicum Womersley are added to  the known 
Protura fauna of Michigan Further records of E. wheeleri Silvestri, Protentomon 
michiganense Bernard, Proturentomon iowaense Womersley, Acerentulus confinis (Berlese) 
and Amerentulus amencanus (Ewing) are listed from various parts of the state. 
INTRODUCTION 
In a previous paper (Bernard, 1976), several new species of Protura were described 
and other known species were listed from Michigan. The present paper contains 
descriptions of two new species of Eosentomon Berlese and a new Berberentulus Tuxen, 
in addition to  previously unpublished records of other species. Nearly all of the 
specimens listed herein were collected by a sugar flotation-centrifugation method 
(Jenkins, 1964). Collectors are listed when known. Holotypes and allotypes will be 
deposited in the Michigan State University Entomology Museum, East Lansing, Michigan, 
USA 48824. 
Family EOSENTOMIDAE 
Genus EOSENTOMON Berlese, 1909 
Eosentomon australicum Womersley 
(Figs. 1-5) 
Eosentomon australicum Womersley, 1939. Primitive Insects of South Australia, p. 289, 
figs. 79N-Q. 
Three females, Kellogg Forest, Kalamazoo County, Michigan, 23 June, 1963, from pine 
forest-floor litter, H. 0. Schooley, coll.; and the following specimens from Monahan 
Lake, Livingston County, Michigan, in moss, E. Bernard, coll.: 
Males Females Mat. Jun. LI1 L1 Prelarvae 
13 April, 1974 2 3 4 4 - - 
19 May, 1974 5 4 2 1 - 1 
These are the first records of E. australicum from North America. 
Eosentornon wheeleri Silvestri 
Eosentomon wheeleri Silvestri, 1909. Atti Acad. Lincei 18:8. 
This species, previously reported from Kalamazoo County, is here recorded from 
Monahan Lake, Livingston County, Michigan, 28 July, 1974, one female from moss; and 
Central Lake, Antrim County, Michigan, 30 July, 1974, five females from a pea (Pisum 
sativum L.) garden, George MacQueen, coll. 
IMichigan Agricultural Experiment Station Journal Article 7344. 
2~epar tment  of Entomology, Michigan State University, East Lansing, Michigan 
48824. Present address: Department of Plant Pathology and Plant Genetics, University of 
Georgia, Athens, Georgia 30602. 
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188 THE GREAT LAKES ENTOMOLOGIST Vol. 8, No. 4 
Figs. 1 -5 .  Eosentomon australicum. Fig. 1. Labrum. Fig. 2 .  Pseudoculus. Fig. 3. Clypeal 
apodeme. Fig. 4. Mandible. Fig. 5 .  Lobus internus. Figs. 6-1 1. Eosentomon antri- 
mense n.sp. Fig. 6. Clypeal apodeme. Fig. 7. Pseudoculus. Fig. 8. Labrum and rostra1 
setae. Fig. 9. Lobus internus. Fig. 10.  Mandible. Fig. 11. Female squama genitalis. 
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THE GREAT LAKES ENTOMOLOGIST 
Eosentomon antrimense, new species 
(Figs. 6-13) 
Colornnd Dimensions.-Body fragile in appearance, with little sclerotization. N = 3. Mean 
length of body, 792 pm; mean length of head, 72 pm; mean length of foretarsus without 
claw, 43.6 pm. 
Morphology.-Pseudoculus (Fig. 7) broadly oval, with a light oval spot centrally, PR = 9.7. 
Clypeal apodeme (Fig. 6) thin with side bars extending inward distally. Labrum (Fig. 8) 
quite small, each lobe obliquely truncated, the labral notch U-shaped; labral setae present. 
The central pair of rostra1 setae swollen basally, narrowing distally. Mandible (Fig. 10) 
stout with two terminal teeth and a slight expansion on the inner side. Lobus internus 
(Fig. 9) with outer spine, median digit and two shorter inner digits, the innermost one 
with a sclerotization running proximally. 
Claw of foretarsus relatively short, TR = 6.0. EU = 0.9, BS = 0.772. Empodia of 
middle and hind legs short. 
Central lobe of precosta not incised. Female squama genitalis (Fig. 11) of a peculiar 
appearance, the caput processus shaped like the bill of a bird, the corpus processus plus 
the median sclerotization terminating apically as two pegs, the entire structure some 
what resembling a mechanical micrometer; the median sclerotization free from the 
corpus distally as a long, thin spur. Alae processus weakly developed, filum processus 
long, apex styli truncate. 
Chaetotaxy.-All sensillae and setae of the foretarsus present except c' (Figs. 12-13). 
Sensilla a short and inconspicuous; b long and broadened; c slightly shorter than d; e and 
g spatulate, larger than is usual for Eosentomon; f 2  more than half the length of f l .  
Sensilla t l  closer to  a 3  than to  a3'; t2  a little shorter than d; t 3  shorter than f l .  Sensilla 
a' long, slightly enlarged, reaching a4; b'l quite similar to c; b'2 narrowly spatulate. 
Abdominal chaetotaxy is as follows: 
I 11-111 IV-VI VII VIII IX-X XI XI1 
Tergum 8a 2 - 8a - sa 3 8 6 8 - 
12 16 16 16 9 3 
Sternum 6 4 - - 6 6 - 2 6 8 8 - 
4 4 10 10 7 4 
- - 
aa3 missing. 
Accessory setae pl '  and p2' similar in length to those of other Eosentomon. 
Discussion.-This peculiar species appears to fall, on  the basis of the female squama 
genitalis, into Tuxen's machadoi-goup (1964), but does not key to species in that 
author's key. The squama genitalis is quite distinctive in the form of the corpus processus 
and the truncate apex styli. E. antrimense, n.sp., is also related tc E. dusun and E. gimangi 
Irnadate (1965) but possesses a markedly different abdominal chaetotaxy. 
Collection Data.-One female, 15 July, 1974, and holotype female and one paratype 
female, 30 July, 1974, from a pea garden, Central Lake, Antrim County, Michigan, 
George MacQueen, coll. 
Eosentomon pinusbanksianum, new species 
(Figs. 14-21) 
Color and Dimensions.-Body whitish-translucent, with yellowish sclerotization posteriorly 
and on the head. N = 4. Mean length of body, 905 pm; mean length of head, 86 pm; 
mean length of foretarsus without claw, 60 pm. 
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190 THE GREAT LAKES ENTOMOLOGIST Vol. 8 ,  No. 4 
Figs. 12-13. Eosentomon antrimense n.sp. Fig. 12. Foretarsus, dorsal view. Fig. 13. Fore- 
tarsus, ventral view. Figs. 14-1 9 .  Eosentomon pinusbanksia?~um n.sp. Fig. 14. Man- 
dible. Fig. 15. Lobus internus. Fig. 16.  Pseudoculus. Fig. 17.  Labrum and rostra1 
setae. Fig. 18. Claws of middle and hind legs. Fig. 19. Female squama genitalis. 
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1975 THE GREAT LAKES ENTOMOLOGIST 191 
Morphology.-Pseudoculus (Fig. 16) broadly oval, with a circular spot centrally and three 
longitudinal lines extending posteriorly, PR = 10.0. Clypeal apodeme not visible. Labrum 
(Fig. 17) slightly broader than long, terminating in a pair of obliquely truncated lobes, 
medially with a U-shaped notch; labral setae present. Rostra1 setae normal, without basal 
swelling. Mandible (Fig. 14) with a strong terminal central tooth, a weak outer tooth and 
a moderate inner expansion. Lobus internus (Fig. 15) with outer spine, median digit, and 
two fairly stout inner digits, the more central one shorter and the other with a long 
proximal sclerotization 
Claw of foretarsus of medium length, TR = 5.7; EU = 0.9, BS = 0.773. Empodia of 
middle and hind legs long, EUJI = 0.34, EUIII = 0.62 (Fig. 18). 
Central lobe of precosta not incised. Sclerotizations of the female squama genitalis 
weak (Fig. 19), the caput processus appearing as two thin, divergent lobes (like the open 
bill of a bird), median sclerotizations weak, and each stylus with two weak triangular 
sclerotizations, one on the outer edge and one proximally. Filum processus short. 
Chaetotaxy.-All foretarsal setae and sensillae present (Figs. 20-21). Sensilla a short, not 
reaching 72; b slightly clavate apically, almost level with p4; c about equal to b and 
reaching 73; d short and clavate; e and g spatulate; f l  long, f2 more than half the l e n ~ t h  
of f l .  Sensilla t l  closer to a3; t2 large and slightly spatulate; t3  a short peg. Sensilla a of 
moderate length, not reaching a3'; b'l short, bf2 slightly spatulate, fairly long; c' nearly 
level with 65. Seta x sensilliform, y and z setiform. 
Abdominal chaetotaxy is as follows: 
I 11-111 IV-VI VII VIII IX-x XI XI1 
Tergum 4 10 - 8a 8a - 8 6 
12 16 16 16 9 3 
8 - 
Sternum - - - 6 6 6 4 - 6 2 8 
4 4 10 10 7 4 
8 - 
aa3 missing. 
Accessory setae of the abdomen of the usual lengths. 
Discussion.-E. pinusbansianum, n.sp., keys to  couplet 6 in Tuxen (1964) but fits neither 
choice. The female squama genitalis resembles that of E. udagawai Imadate (1961), but is 
less strongly sclerotized. E. pinusbanksianum also possesses labral setae (absent in E. 
udngawar? and a long empodial appendage on the middle legs (short in E. udagawaz?. 
Collection Data.-Holotype female, allotype male, and one female, one male, and one LII 
(paratypes), 26 March, 1974, Berrien County, Michigan, from a jack pine (Pinus banksiana 
Lamb) forest. Both females are missing both forelegs. 
Family PROTENTOMIDAE 
Genus PROTURENTOMON Silvestri, 1909 
Proturentomon iowaenese Womersley 
Proturentomon iowaense Womersley, 1938. Bull. Brooklyn Entomol. Soc. 33:221, pl. XII, 
figs. a-c. 
Specimens of P. iowaense have been recovered, in addition to previous records, from 
Oakland County, Michigan, 1 June, 1974, three females and one maturus junior from a 
weedy field. 
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THE GREAT LAKES ENTOMOLOGIST Vol. 8 ,  No. 4 
Figs. 20-21. Eosentomon pinusbanksianum n.sp. Fig. 20. Foretarsus, dorsal view. 
Fig. 21. Foretarsus, ventral view. Figs. 22-26. Berberentulus macqueeni n.sp. 
Fig. 22. Pseudoculus. Fig. 23. Canal of maxillary gland. Fig. 24. Labial palpus. 
Fig. 25. Mandible. Fig. 26. Lobus internus. 
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THE GREAT LAKES ENTOMOLOGIST 
Genus PROTENTOMON Ewing, 1921 
Protentomon michiganense Bernard 
Protentomon michiganense Bernard, 1976. Great Lakes Entomol. 8(4): 171-1 76, figs. 48-65. 
This species has been recovered at the following sites: East Lansing, Ingham County, 
Michigan, 3 December, 1973, from sandy soil in a vineyard, 23 femaIes, 2 maturi juniores, 
3 larvae I1 and one larva I, D. C. Ramsdell, coll.; and Watervliet, Berrien County, 
Michigan, 18 February, 1974, from sandy orchard soil, one maturus junior. 
Family ACERENTOMIDAE 
Genus ACERENTULUS Berlese, 1908 
Acerentulus confinis (Berlese) 
Acerentomon confine Berlese, 1908. Redia 5:16, figs. 3-5. 
One female, one maturus junior and one larva I1 were collected from soil in a jack 
pine forest in Berrien County, Michigan, 26 March, 1974. 
Genus AMERENTULUS Tuxen, 1963 
Amerentulus americanus (Ewing) 
Acerentomon americanum Ewing, 1921. Proc. Entomol. Soc. Wash. 29:197, fig. 6. 
This common species has been found at three additional sites: two maturi juniores 
from' moss at Monahan Lake, Livingston County, Michigan, 19 May, 1974; one female 
from vineyard soil, Ingham County, Michigan, 17 June, 1974, D. C. Ramsdell, coll.; and 
one female, one larva I and one prelarva, Benzie County, Michigan, 16 July, 1974. 
Genus BERBERENTULUS Tuxen, 1963 
Berberentulus macqueeni, new species 
(Figs. 22-32) 
Color and Dimensions.-Body yellowish. N =  5. Mean length of body, 754pm; mean 
length of head, 80 pm; mean length of foretarsus without claw, 13.2 pm. 
Morphology.-Pseudoculus (Fig. 22) round, PR = 11.6. Canal of maxillary gland (Fig. 23) 
with bilobed apical dilation, heart-shaped calyx, and an expansion of the duct adjacent 
to the calyx. Mandible (Fig. 25) with four teeth: one apically, one subterminally, and 
two proximally. Lobus internus (Fig. 26) stout, with a long median digit and an inner 
lamella. Labial palpus reduced, with three setae and a lanceolate sensilla (Fig. 24). 
Labrum not produced. 
Claw of foretarsus untoothed, TR = 3.95; EU = 0.25; BS = 0.505. 
Abdominal appendages I1 and I11 (Fig. 29) each with two setae, the apical seta about 
37% the length of the subapical. Striate band reduced, without longitudinal striations. 
The large pectine of Abd. VIII (Fig. 31) welldeveloped. narrowing toward the pleural 
region, with eight small teeth. Female squama genitalis with slender basal apodemes and a 
pointed stylus and acrostylus (Fig. 32). 
Chaetotaxy.-All foretarsal sensillae present except b' (Figs. 27-28). Sensillae a, c, and d 
about equal in length, d just reaching a5. Sensilla b very long, reaching 74, thicker than 
the other sensillae; f. immediately above, and slightly shorter than, sensilla e; g reaching to 
the claw base. Sensilla t l  baculiform, t2  setiform and only as long as a3, t3 small, 
ventricose. Sensilla a' long, narrowly fusiform; c' placed above 65, reaching beyond the 
claw base. 
Abdominal chaetotaxy is as follows: 
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194 THE GREAT LAKES ENTOMOLOGIST Vol. 8, No. 4 
Figs. 27-32. Berberentulus rnacqueeni n.sp. Fig. 27. Foretarsus, interior view. Fig. 28. Fore- 
tarsus, exterior new. Fig. 29. Abdominal appendages 11-111. Fig. 30. Right side of 
terg. 111. Fig. 31. Comb VIII.  Fig. 32. Female squama genitalis. 
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1975 THE GREAT LAKES ENTOMOLOGIST 195 
I 11-111 IV-VI VII VIII IX-x XI XI1 
Tergum 8 3 - 8 6C q b  - l2 6 9 10 loa loa 16 15 
Sternum 3 3 - 
2 5 
"pl: p3: p4, p4'missing (see Fig. 30). 
bal-3 missing. 
'one specimen with an a1 missing (5 a-setae). 
Discussion-This new species is closely related to B. berberus (Conde, 1948) and B. 
polonicus Szeptycki (1968), and with them forms a well-defined species group in 
Berberentulus by the reduction in p-seta number of terga 11-VI. In Tuxen's key (1964), 
B. macqueeni, n.sp., keys to coupIet 10 but fits neither of the alternatives. It is 
distinguished from B. berberus by the broad sword-like sensilla a (filiform in B. 
berberus); baculiform t l  (rather than claviform); c' extending past the claw base; and the 
presence of only four, rather than six a-setae on tergum I. From B. polonicus, it is 
distinguished by the fusiform labial sensilla (rather than filiform); baculiform t l ;  the 
width of sensilla a (narrow in B. polonicus); ten p-setae on tergum I, rather than 12 (p2" 
absent); and six a-setae on tergum VIII, instead of four. 
Collection Dzt4.-One female and a larva I, 15 July, 1974, and holotype female and three 
paratype females, 30 July, 1974, all coIlected at  Central Lake, Antrim County, Michigan, 
George MacQueen, all. It  is my pleasure to  name this species after Mr. George 
MacQueen, who collected the type material of both this species and the newly described 
species Eosentomon antrimense. 
LITERATURE CITED 
Berlese, A. 1908. Osservazioni intomo agli Acerentornidi. Redia 5: 16-19. 
, 1909. Monografia dei Myrientomata. Redia 6:l-182. 
Bernard, E. C. 1976. A new genus, six new species, and records of Protura from 
Michigan. Great Lakes Entomol. 8(4):157-181. 
Conde, B. 1948. Protoures d'Algerie. Rev. Fr. d'Entomol. 14:194-202. 
Ewing, H. E. 1921. New genera and species of Protura. Roc. Entomol. Soc. Wash. 
23:193-202. 
Imadate, G. 1961. Two new proturan species of the genus Eosentomon from Japan. 
Kontyu 29:132-141. 
. 1965. Proturans-fauna of southeast Asia. Nature and Life in SE Asia 
4:195-302. 
Jenkins, W. R. 1964. A rapid centrifugal-flotation technique for separating nematodes 
from soil. Plant Dis. Rep. 48:692. 
Silvestri, F. 1909. Descrizioni preliminari di varii artropodi, specialmente dYAmerica. Atti 
Accad. Lincei 18: 7-10. 
Szeptycki, A. 1968. Berberentulus polonicus n.sp., a new species of Protura from Poland. 
Polskie Pismo Entomol. 38:465468. 
Tuxen, S. L. 1963. Art- und Gattungsmerkmale bei den Proturen. Entomol. Medd. 
31:164-191. 
. 1964. The Protura. Paris: Herrnann; 360 p. 
9
B: New Species and Additional Records of Protura from Michigan
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New Species and Additional Records of Protura from Michigan

Valparaiso University

The Great Lakes Entomologist Volume 8 Number 4 - Winter 1975 Number 4 - Winter 1975 Article 3 December 1975 New Species and Additional Records of Protura from Michigan Ernest C. B Bernard Michigan State University Follow this and additional works at: https://scholar.valpo.edu/tgle  Part of the Entomology Commons Recommended Citation B, Ernest C. Bernard 1975. "New Species and Additional Records of Protura from Michigan," The Great Lakes Entomologist, vol 8 (4) Available at: https://scholar.valpo.edu/tgle/vol8/iss4/3 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. THE GREAT LAKES ENTOMOLOGlST NEW SPECIES AND ADDITIONAL RECORDS O F  PROTURA FROM MICHIGAN1 Ernest C. Bernard2 ABSTRACT Three new species, Eosentomon antrimense, E. pinusbanksianum, and Berberentulus mcqueeni, and one new record, E. australicum Womersley are added to  the known Protura fauna of Michigan Further records of E. wheeleri Silvestri, Protentomon michiganense Bernard, Proturentomon iowaense Womersley, Acerentulus confinis (Berlese) and Amerentulus amencanus (Ewing) are listed from various parts of the state. INTRODUCTION In a previous paper (Bernard, 1976), several new species of Protura were described and other known species were listed from Michigan. The present paper contains descriptions of two new species of Eosentomon Berlese and a new Berberentulus Tuxen, in addition to  previously unpublished records of other species. Nearly all of the specimens listed herein were collected by a sugar flotation-centrifugation method (Jenkins, 1964). Collectors are listed when known. Holotypes and allotypes will be deposited in the Michigan State University Entomology Museum, East Lansing, Michigan, USA 48824. Family EOSENTOMIDAE Genus EOSENTOMON Berlese, 1909 Eosentomon australicum Womersley (Figs. 1-5) Eosentomon australicum Womersley, 1939. Primitive Insects of South Australia, p. 289, figs. 79N-Q. Three females, Kellogg Forest, Kalamazoo County, Michigan, 23 June, 1963, from pine forest-floor litter, H. 0. Schooley, coll.; and the following specimens from Monahan Lake, Livingston County, Michigan, in moss, E. Bernard, coll.: Males Females Mat. Jun. LI1 L1 Prelarvae 13 April, 1974 2 3 4 4 - - 19 May, 1974 5 4 2 1 - 1 These are the first records of E. australicum from North America. Eosentornon wheeleri Silvestri Eosentomon wheeleri Silvestri, 1909. Atti Acad. Lincei 18:8. This species, previously reported from Kalamazoo County, is here recorded from Monahan Lake, Livingston County, Michigan, 28 July, 1974, one female from moss; and Central Lake, Antrim County, Michigan, 30 July, 1974, five females from a pea (Pisum sativum L.) garden, George MacQueen, coll. IMichigan Agricultural Experiment Station Journal Article 7344. 2~epar tment  of Entomology, Michigan State University, East Lansing, Michigan 48824. Present address: Department of Plant Pathology and Plant Genetics, University of Georgia, Athens, Georgia 30602. 1B: New Species and Additional Records of Protura from Michiganublished by ValpoScholar, 1975188 THE GREAT LAKES ENTOMOLOGIST Vol. 8, No. 4 Figs. 1 -5 .  Eosentomon australicum. Fig. 1. Labrum. Fig. 2 .  Pseudoculus. Fig. 3. Clypeal apodeme. Fig. 4. Mandible. Fig. 5 .  Lobus internus. Figs. 6-1 1. Eosentomon antri- mense n.sp. Fig. 6. Clypeal apodeme. Fig. 7. Pseudoculus. Fig. 8. Labrum and rostra1 setae. Fig. 9. Lobus internus. Fig. 10.  Mandible. Fig. 11. Female squama genitalis. 2The Great Lakes Entomologist, Vol. 8, No. 4 [1975], Art. 3https://scholar.valpo.edu/tgle/vol8/iss4/3THE GREAT LAKES ENTOMOLOGIST Eosentomon antrimense, new species (Figs. 6-13) Colornnd Dimensions.-Body fragile in appearance, with little sclerotization. N = 3. Mean length of body, 792 pm; mean length of head, 72 pm; mean length of foretarsus without claw, 43.6 pm. Morphology.-Pseudoculus (Fig. 7) broadly oval, with a light oval spot centrally, PR = 9.7. Clypeal apodeme (Fig. 6) thin with side bars extending inward distally. Labrum (Fig. 8) quite small, each lobe obliquely truncated, the labral notch U-shaped; labral setae present. The central pair of rostra1 setae swollen basally, narrowing distally. Mandible (Fig. 10) stout with two terminal teeth and a slight expansion on the inner side. Lobus internus (Fig. 9) with outer spine, median digit and two shorter inner digits, the innermost one with a sclerotization running proximally. Claw of foretarsus relatively short, TR = 6.0. EU = 0.9, BS = 0.772. Empodia of middle and hind legs short. Central lobe of precosta not incised. Female squama genitalis (Fig. 11) of a peculiar appearance, the caput processus shaped like the bill of a bird, the corpus processus plus the median sclerotization terminating apically as two pegs, the entire structure some what resembling a mechanical micrometer; the median sclerotization free from the corpus distally as a long, thin spur. Alae processus weakly developed, filum processus long, apex styli truncate. Chaetotaxy.-All sensillae and setae of the foretarsus present except c' (Figs. 12-13). Sensilla a short and inconspicuous; b long and broadened; c slightly shorter than d; e and g spatulate, larger than is usual for Eosentomon; f 2  more than half the length of f l .  Sensilla t l  closer to  a 3  than to  a3'; t2  a little shorter than d; t 3  shorter than f l .  Sensilla a' long, slightly enlarged, reaching a4; b'l quite similar to c; b'2 narrowly spatulate. Abdominal chaetotaxy is as follows: I 11-111 IV-VI VII VIII IX-X XI XI1 Tergum 8a 2 - 8a - sa 3 8 6 8 - 12 16 16 16 9 3 Sternum 6 4 - - 6 6 - 2 6 8 8 - 4 4 10 10 7 4 - - aa3 missing. Accessory setae pl '  and p2' similar in length to those of other Eosentomon. Discussion.-This peculiar species appears to fall, on  the basis of the female squama genitalis, into Tuxen's machadoi-goup (1964), but does not key to species in that author's key. The squama genitalis is quite distinctive in the form of the corpus processus and the truncate apex styli. E. antrimense, n.sp., is also related tc E. dusun and E. gimangi Irnadate (1965) but possesses a markedly different abdominal chaetotaxy. Collection Data.-One female, 15 July, 1974, and holotype female and one paratype female, 30 July, 1974, from a pea garden, Central Lake, Antrim County, Michigan, George MacQueen, coll. Eosentomon pinusbanksianum, new species (Figs. 14-21) Color and Dimensions.-Body whitish-translucent, with yellowish sclerotization posteriorly and on the head. N = 4. Mean length of body, 905 pm; mean length of head, 86 pm; mean length of foretarsus without claw, 60 pm. 3B: New Species and Additional Records of Protura from MichiganPublished by ValpoScholar, 1975190 THE GREAT LAKES ENTOMOLOGIST Vol. 8 ,  No. 4 Figs. 12-13. Eosentomon antrimense n.sp. Fig. 12. Foretarsus, dorsal view. Fig. 13. Fore- tarsus, ventral view. Figs. 14-1 9 .  Eosentomon pinusbanksia?~um n.sp. Fig. 14. Man- dible. Fig. 15. Lobus internus. Fig. 16.  Pseudoculus. Fig. 17.  Labrum and rostra1 setae. Fig. 18. Claws of middle and hind legs. Fig. 19. Female squama genitalis. 4The Great Lakes Entomologist, Vol. 8, No. 4 [1975], Art. 3https://scholar.valpo.edu/tgle/vol8/iss4/31975 THE GREAT LAKES ENTOMOLOGIST 191 Morphology.-Pseudoculus (Fig. 16) broadly oval, with a circular spot centrally and three longitudinal lines extending posteriorly, PR = 10.0. Clypeal apodeme not visible. Labrum (Fig. 17) slightly broader than long, terminating in a pair of obliquely truncated lobes, medially with a U-shaped notch; labral setae present. Rostra1 setae normal, without basal swelling. Mandible (Fig. 14) with a strong terminal central tooth, a weak outer tooth and a moderate inner expansion. Lobus internus (Fig. 15) with outer spine, median digit, and two fairly stout inner digits, the more central one shorter and the other with a long proximal sclerotization Claw of foretarsus of medium length, TR = 5.7; EU = 0.9, BS = 0.773. Empodia of middle and hind legs long, EUJI = 0.34, EUIII = 0.62 (Fig. 18). Central lobe of precosta not incised. Sclerotizations of the female squama genitalis weak (Fig. 19), the caput processus appearing as two thin, divergent lobes (like the open bill of a bird), median sclerotizations weak, and each stylus with two weak triangular sclerotizations, one on the outer edge and one proximally. Filum processus short. Chaetotaxy.-All foretarsal setae and sensillae present (Figs. 20-21). Sensilla a short, not reaching 72; b slightly clavate apically, almost level with p4; c about equal to b and reaching 73; d short and clavate; e and g spatulate; f l  long, f2 more than half the l e n ~ t h  of f l .  Sensilla t l  closer to a3; t2 large and slightly spatulate; t3  a short peg. Sensilla a of moderate length, not reaching a3'; b'l short, bf2 slightly spatulate, fairly long; c' nearly level with 65. Seta x sensilliform, y and z setiform. Abdominal chaetotaxy is as follows: I 11-111 IV-VI VII VIII IX-x XI XI1 Tergum 4 10 - 8a 8a - 8 6 12 16 16 16 9 3 8 - Sternum - - - 6 6 6 4 - 6 2 8 4 4 10 10 7 4 8 - aa3 missing. Accessory setae of the abdomen of the usual lengths. Discussion.-E. pinusbansianum, n.sp., keys to  couplet 6 in Tuxen (1964) but fits neither choice. The female squama genitalis resembles that of E. udagawai Imadate (1961), but is less strongly sclerotized. E. pinusbanksianum also possesses labral setae (absent in E. udngawar? and a long empodial appendage on the middle legs (short in E. udagawaz?. Collection Data.-Holotype female, allotype male, and one female, one male, and one LII (paratypes), 26 March, 1974, Berrien County, Michigan, from a jack pine (Pinus banksiana Lamb) forest. Both females are missing both forelegs. Family PROTENTOMIDAE Genus PROTURENTOMON Silvestri, 1909 Proturentomon iowaenese Womersley Proturentomon iowaense Womersley, 1938. Bull. Brooklyn Entomol. Soc. 33:221, pl. XII, figs. a-c. Specimens of P. iowaense have been recovered, in addition to previous records, from Oakland County, Michigan, 1 June, 1974, three females and one maturus junior from a weedy field. 5B: New Species and Additional Records of Protura from MichiganPublished by ValpoScholar, 1975THE GREAT LAKES ENTOMOLOGIST Vol. 8 ,  No. 4 Figs. 20-21. Eosentomon pinusbanksianum n.sp. Fig. 20. Foretarsus, dorsal view. Fig. 21. Foretarsus, ventral view. Figs. 22-26. Berberentulus macqueeni n.sp. Fig. 22. Pseudoculus. Fig. 23. Canal of maxillary gland. Fig. 24. Labial palpus. Fig. 25. Mandible. Fig. 26. Lobus internus. 6The Great Lakes Entomologist, Vol. 8, No. 4 [1975], Art. 3https://scholar.valpo.edu/tgle/vol8/iss4/3THE GREAT LAKES ENTOMOLOGIST Genus PROTENTOMON Ewing, 1921 Protentomon michiganense Bernard Protentomon michiganense Bernard, 1976. Great Lakes Entomol. 8(4): 171-1 76, figs. 48-65. This species has been recovered at the following sites: East Lansing, Ingham County, Michigan, 3 December, 1973, from sandy soil in a vineyard, 23 femaIes, 2 maturi juniores, 3 larvae I1 and one larva I, D. C. Ramsdell, coll.; and Watervliet, Berrien County, Michigan, 18 February, 1974, from sandy orchard soil, one maturus junior. Family ACERENTOMIDAE Genus ACERENTULUS Berlese, 1908 Acerentulus confinis (Berlese) Acerentomon confine Berlese, 1908. Redia 5:16, figs. 3-5. One female, one maturus junior and one larva I1 were collected from soil in a jack pine forest in Berrien County, Michigan, 26 March, 1974. Genus AMERENTULUS Tuxen, 1963 Amerentulus americanus (Ewing) Acerentomon americanum Ewing, 1921. Proc. Entomol. Soc. Wash. 29:197, fig. 6. This common species has been found at three additional sites: two maturi juniores from' moss at Monahan Lake, Livingston County, Michigan, 19 May, 1974; one female from vineyard soil, Ingham County, Michigan, 17 June, 1974, D. C. Ramsdell, coll.; and one female, one larva I and one prelarva, Benzie County, Michigan, 16 July, 1974. Genus BERBERENTULUS Tuxen, 1963 Berberentulus macqueeni, new species (Figs. 22-32) Color and Dimensions.-Body yellowish. N =  5. Mean length of body, 754pm; mean length of head, 80 pm; mean length of foretarsus without claw, 13.2 pm. Morphology.-Pseudoculus (Fig. 22) round, PR = 11.6. Canal of maxillary gland (Fig. 23) with bilobed apical dilation, heart-shaped calyx, and an expansion of the duct adjacent to the calyx. Mandible (Fig. 25) with four teeth: one apically, one subterminally, and two proximally. Lobus internus (Fig. 26) stout, with a long median digit and an inner lamella. Labial palpus reduced, with three setae and a lanceolate sensilla (Fig. 24). Labrum not produced. Claw of foretarsus untoothed, TR = 3.95; EU = 0.25; BS = 0.505. Abdominal appendages I1 and I11 (Fig. 29) each with two setae, the apical seta about 37% the length of the subapical. Striate band reduced, without longitudinal striations. The large pectine of Abd. VIII (Fig. 31) welldeveloped. narrowing toward the pleural region, with eight small teeth. Female squama genitalis with slender basal apodemes and a pointed stylus and acrostylus (Fig. 32). Chaetotaxy.-All foretarsal sensillae present except b' (Figs. 27-28). Sensillae a, c, and d about equal in length, d just reaching a5. Sensilla b very long, reaching 74, thicker than the other sensillae; f. immediately above, and slightly shorter than, sensilla e; g reaching to the claw base. Sensilla t l  baculiform, t2  setiform and only as long as a3, t3 small, ventricose. Sensilla a' long, narrowly fusiform; c' placed above 65, reaching beyond the claw base. Abdominal chaetotaxy is as follows: 7B: New Species and Additional Records of Protura from MichiganPublished by ValpoScholar, 1975194 THE GREAT LAKES ENTOMOLOGIST Vol. 8, No. 4 Figs. 27-32. Berberentulus rnacqueeni n.sp. Fig. 27. Foretarsus, interior view. Fig. 28. Fore- tarsus, exterior new. Fig. 29. Abdominal appendages 11-111. Fig. 30. Right side of terg. 111. Fig. 31. Comb VIII.  Fig. 32. Female squama genitalis. 8The Great Lakes Entomologist, Vol. 8, No. 4 [1975], Art. 3https://scholar.valpo.edu/tgle/vol8/iss4/31975 THE GREAT LAKES ENTOMOLOGIST 195 I 11-111 IV-VI VII VIII IX-x XI XI1 Tergum 8 3 - 8 6C q b  - l2 6 9 10 loa loa 16 15 Sternum 3 3 - 2 5 "pl: p3: p4, p4'missing (see Fig. 30). bal-3 missing. 'one specimen with an a1 missing (5 a-setae). Discussion-This new species is closely related to B. berberus (Conde, 1948) and B. polonicus Szeptycki (1968), and with them forms a well-defined species group in Berberentulus by the reduction in p-seta number of terga 11-VI. In Tuxen's key (1964), B. macqueeni, n.sp., keys to coupIet 10 but fits neither of the alternatives. It is distinguished from B. berberus by the broad sword-like sensilla a (filiform in B. berberus); baculiform t l  (rather than claviform); c' extending past the claw base; and the presence of only four, rather than six a-setae on tergum I. From B. polonicus, it is distinguished by the fusiform labial sensilla (rather than filiform); baculiform t l ;  the width of sensilla a (narrow in B. polonicus); ten p-setae on tergum I, rather than 12 (p2" absent); and six a-setae on tergum VIII, instead of four. Collection Dzt4.-One female and a larva I, 15 July, 1974, and holotype female and three paratype females, 30 July, 1974, all coIlected at  Central Lake, Antrim County, Michigan, George MacQueen, all. It  is my pleasure to  name this species after Mr. George MacQueen, who collected the type material of both this species and the newly described species Eosentomon antrimense. LITERATURE CITED Berlese, A. 1908. Osservazioni intomo agli Acerentornidi. Redia 5: 16-19. , 1909. Monografia dei Myrientomata. Redia 6:l-182. Bernard, E. C. 1976. A new genus, six new species, and records of Protura from Michigan. Great Lakes Entomol. 8(4):157-181. Conde, B. 1948. Protoures d'Algerie. Rev. Fr. d'Entomol. 14:194-202. Ewing, H. E. 1921. New genera and species of Protura. Roc. Entomol. Soc. Wash. 23:193-202. Imadate, G. 1961. Two new proturan species of the genus Eosentomon from Japan. Kontyu 29:132-141. . 1965. Proturans-fauna of southeast Asia. Nature and Life in SE Asia 4:195-302. Jenkins, W. R. 1964. A rapid centrifugal-flotation technique for separating nematodes from soil. Plant Dis. Rep. 48:692. Silvestri, F. 1909. Descrizioni preliminari di varii artropodi, specialmente dYAmerica. Atti Accad. Lincei 18: 7-10. Szeptycki, A. 1968. Berberentulus polonicus n.sp., a new species of Protura from Poland. Polskie Pismo Entomol. 38:465468. Tuxen, S. L. 1963. Art- und Gattungsmerkmale bei den Proturen. Entomol. Medd. 31:164-191. . 1964. The Protura. Paris: Herrnann; 360 p. 9B: New Species and Additional Records of Protura from MichiganPublished by ValpoScholar, 1975

Ernest C B

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New Species and Additional Records of Protura from Michigan

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