Eutarsopolipus regenfussi n. sp. is described from the Michigan carabid beetle, Chlaenius pennsylvanicus (L.)

Husband, Robert W

Swihart, Cheryl D

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Robert W Husband

Cheryl D Swihart

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A New Species of Mite (Acari: Podapolipidae) From a Michigan Carabid Beetle, \u3ci\u3eChlaenius Pennsylvanicus\u3c/i\u3e

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The Great Lakes Entomologist Volume 19 Number 2 - Summer 1986 Number 2 - Summer 1986 Article 11 June 1986 A New Species of Mite (Acari: Podapolipidae) From a Michigan Carabid Beetle, Chlaenius Pennsylvanicus Robert W. Husband Adrian College Cheryl D. Swihart Adrian College Follow this and additional works at: https://scholar.valpo.edu/tgle  Part of the Entomology Commons Recommended Citation Husband, Robert W. and Swihart, Cheryl D. 1986. "A New Species of Mite (Acari: Podapolipidae) From a Michigan Carabid Beetle, Chlaenius Pennsylvanicus," The Great Lakes Entomologist, vol 19 (2) Available at: https://scholar.valpo.edu/tgle/vol19/iss2/11 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. 1986 THE GREAT LAKES ENTOMOLOGIST 107 A NEW SPECIES OF MITE (ACARI: PODAPOLIPIDAE) FROM A MICHIGAN CARABID BEETLE, CHLAENIUS PENNSYLVANICUS Robert W. Husband and Cheryl D. Swihartl ABSTRACT Eutarsopolipus regenfussi n. sp. is described from the Michigan carabid beetle, Chlaenius pennsylvanicus (L.). Regenfuss (1968) fully defined the genus Elltarsopolipus and described many European species. The purpose of this paper is to describe a third North American species of Eutarsopolipus, ElltarsopolipllS regenfllssi, removed from Chlaenius pennsylvanicus (L.) (Coleoptera: Carabidae) collected near Douglas Lake at the University of Michigan Biological Station. The species i  named for the late Hans Regenfuss i  tribute to his detailed studies of Podapolipidae. Measurements were taken with the aid of a Wild phase-contrast microscope with a drawing tube calibrated with a stage micrometer. All measurements are in micrometers. Terminology is based on Lindquist (1976, 1977). The most representative measurements of the best mounted specimens were chosen, rather than averages of all mites. Eutarsopolipus regenfussi new species Female (Figs. I, 2). Gnathosoma longer than wide, length 50, width 43. Palps 10; stylets smooth 42-45. Stigmata on stout stalks dorsolateral to base of gnathosoma. Idiosoma oval, length 269-329, width 167-216. Plate C length 40-60, width 165-257; plate D length 50-60, width 153-195; plate EF length 60, width 130-210. Setae hz 12.Setae hz li2 length of setae SC2' Plate C width vs. length ratio is about 4:1. Legs. Leg I with hook-like terminal claw: setal numberformula (FGTT) 2078. Setae tc f and tc "12, w and <P 6. Leg II setal formula 0046, leg III 0045. Male (Figs. 3, 4). Gnathosoma length 30, width 30; dorsal gnathosomal setae. 12 (bent), ventral setae 2. Palps 12, stylets 22. Idiosoma. Length 136, width 99. Prodorsal plate semicircular, setae Vi> V2 microsetae, SC2 32. Setae CI, Cz, d and e all very short-no longer than the width of setal socket. Aedeagus posterior. Genital capusle length 24, width at base 20, distal width 10. Venter with apodemes I and 2 and sternal apodeme well developed. Coxae III fused. Coxae I, 2 with very short setae. Coxal plate 3 with setae 3b twice length of setae 3a. Legs. Tarsus I with a single ventro-terminal spine. Solenidion omega I 4, I 4, solenidion phi 5, less than 1/3 width of tibia 1. Tarsi II, III with 2 terminal stout spine-like setae. Claws much reduced. Setal number formula as in female. Larval female (Figs. 5, 6). Gnathosoma length 37, width 38, dorsal gnathosomal setae 19, ventral setae no longer than width of setal socket, palps two-segmented, distal segment with a ventral sclerotized structure. Stylets smooth 24-29, Idiosoma length 137-151, width 98-118. Prodorsal plate semicireular, setae VI  V2 3, SCl more than 40. Plates C,D fused mesally, all setae short. Plate EF with a single pair of setae. Plate H oval, hI 25, h2 more than 75. 1 Biology Department, Adrian College, Adrian, MI 49221. 1Husband and Swihart: A New Species of Mite (Acari: Podapolipidae) From a Michigan CaraPublished by ValpoScholar, 1986108 THE GREAT LAKES ENTOMOLOGIST Vol. 19, No.2 1 Fig. l. Eutarsopolipus regenfussi n. sp., adult female. dorsal aspect. Legs. Leg I with two parallel, terminal claws, solenidion omega I ..J.. II. -t: phi -to Ic' and tc" 9. Leg II, III claws small and slender. Venter with apodemes 1 and 2 and sternal apodeme well developed, la and 2a no longer than width of setal socket: setae 3a 2/3 length of 3b. Type data: Hololype adult female: U.S.A., Michigan, Cheboygan Co .. University ofMichigan Biological Station on Douglas Lake, collected under elytra of Chlaellius pellllsylvanicus (L.) collected by P. W. Fattig 6 August 1915. Deposited in the R. W. Fattig Museum, University of Georgia, Athens, GA (RWH7385 .. 1). Paratypes (three males, three females, seven larval females. three eggsi. Adult female (RWH3.. 7385.. 2). male (RWH3 .. 7385.. 1), and larval female (RWH2 .. 7385.. 1). and two eggs (RWH7385 .. 5, RWH7385 .. 6) to the collection at Adrian College. Adrian Michigan. Adult female (RWH7385 ..7) in Zoologisches Museum, University of Hamburg. Ham­burg, West Germany. Male (RWH7385 .. 2), larval females (RWH7385-4, RWH2 .. 7385.. 2), and eggs (RWH3 .. 7385-4) in the P. W. Fattig Museum. University of Georgia. Athens, Georgia. Male (RWH7385 .. 3), larval females (RWH3 .. 7383.. 3. RWH2 .. 7385.. 3) to the Museum of Zoology, Univ rsity of Michigan, Ann Arbor, Michigan. 2The Great Lakes Entomologist, Vol. 19, No. 2 [1986], Art. 11https://scholar.valpo.edu/tgle/vol19/iss2/111986 THE GREAT LAKES ENTOMOLOGIST 109 2 Fig. 2. Eutarsopolipus regenfussi n. sp., adult female, ventral aspect. DIAGNOSIS OF SPECIES Species characters are based in part on those used by Regenfuss (1968, 1974). Adult female E. reg nfussi resemble E. inermis in length of cheliceral stylets, in having one plate C and in plate C width to length ratio greater than 3: 1. E. regenfussi resembles E. latus in having plate EF wider than 150 jJ.m, leg I claw well developed, conspicuous hI setae and in a shorter distance between setae VI-VI than between vI-V2. The genital capusle of the male E. regenfussi is similar to that of E. latus. Both have basal width to distal width proportions of 2: I in contrast to the 3:2 ratio in the genital capsule of E. inermis. Setae CI are closer together in E. regen fuss! than in E. inermis or E. latus. In larval female E. regen/ussi, setae VI are further apart than setae SC2 in contrast to E. latus and E. inermis. Setae d are fnrther apart than setae V 1 or e in contrast to E. latus in which distances between setae VI, d and e are equal. 3Husband and Swihart: A New Species of Mite (Acari: Podapolipidae) From a Michigan CaraPublished by ValpoScholar, 1986110 THE GREAT LAKES ENTOMOLOGIST Vol. 19, No. 1 J E ...... o Fig. 3. Eutarsopolipus regenfussi n. sp., male, dorsal aspect. E E ..... o Fig. 4. Eutarsopolipus regenfussi n. sp .. male. ventral aspect. 4The Great Lakes Entomologist, Vol. 19, No. 2 [1986], Art. 11https://scholar.valpo.edu/tgle/vol19/iss2/111986 THE GREAT LAKES ENTOMOLOGIST III E E 5 Fig. 5. Eutarsopolipus regenfussi n. sp., larval female, dorsal aspect. DISCUSSION All stages of all potential species of North American Eut rsopolipus are not represented as they are in E. regenfussi. It is difficult to distinguish some species of Dorsipes and EutarsopoUpus by using larval and adult female characteristics. We have records of EutarsopoUpus and Dorsipes from more than 12 species of North American Carabidae and continue to look at additional specimens of these and other host species to get adequate representation before descriptions are made. Regenfuss (l 968 , 1973, 1974) reviewed the family Podapolipidae and dealt with Eutarsopo!ipus and Dorsipes in considerable detail. A high degree of host specificity appears in many Eut rsopolipus and this may be related to dispersal of mites during copulation by the beetles. Mites are reproductively isolated on different hosts and on different parts of the same host (Regenfuss 1972). In our limited studies it is not yet apparent if Eutarsopolipus from several species of Chlaenius beetles share more characters than Eutarsopolipus from two species of Evarthrus. Claw and setae h2 development in Eutarso olipus from Chlaenius and lack of development in mites from Evarthrus suggest a divergence of mite species on host species in these two genera. At present, Eutarsopo!ipus from North America are not known as well as Eutarsopolipus 5Husband and Swihart: A New Species of Mite (Acari: Podapolipidae) From a Michigan CaraPublished by ValpoScholar, 1986112 THE GREAT LAKES ENTOMOLOGIST Vol. 19, No.2 E E ,..•o j Fig. 6. Eutarsopolipus regenfussi n. sp., larval female, ventral aspect. from Central Europe are and the types of comparisons made by Regenfuss (1968) cannot be made for North Ameriean species. ACKNOWLEDGMENTS We are very grateful to the following specialists for making Eutarsopolipus specimens available: P. Hunter and W. T. At yeo, University of Georgia, Athens; E. Lindquist, Ottawa, Canada; G. Eickwort, Cornell University, New York; P. A. Nickel and R. J. Elzinga of Kansas State University; M. O'Brien and . OConnor of the University of Michigan Museum of Zoology; G. Dunn of Michigan State University; G. Rack of the University of Hamburg, W. Germany; and M. Huybensz, formerly of Cornell University, New York. LlTERATURE CITED Husband, Robert W. 1974. Ovacarus peelei, a new species of mite (Acarina: Podapolipidae) associated with the carabid Pasimachus elongatus. Great Lakes Entomol. 7:1--7. 6The Great Lakes Entomologist, Vol. 19, No. 2 [1986], Art. 11https://scholar.valpo.edu/tgle/vol19/iss2/111986 THE GREAT LAKES ENTOMOLOGIST 113 Lindquist, E. E. 1976. Transfer of the Tarsocheylid e to the Heterostigmata and reassignment of the Tarsonemina and Heterostigmata to lower hierarchic status in the Prostigmata (Acari). Canadian Entomol. 108:23-48. __. 1977. Homology of dorsal opisthosornal plates, setae and cupules of heterostigmatid mites with those of other eleutherengone Prostigmata (Acari). Acarologia 19:97-104. Regenfuss, H. 1968. Untersuchungen zur Morphologie, Systematik und "Okologie der Podapolipidae (Acarina, Tarsonemini). Z. wiss. Zool., 177:183-282. __. 1972. Uber die Einnischung synhospitaler Parasitenarten auf dem Wirtskorpcr. Z. zoo!. Syst. Evolutionsforsch., 10:44-65. __. 1973. Beinreduktion und VerJagurung des Kopulationsapparates in der Milbenfamilie PodapoIipidae, ein Beispiel fur verhaltensgesteuerte Evolution morphologischer Strukturen. Z. zoo!. Syst. Evolutionsforsch., 11:173-195. __. 1974. Neue ektoparasitischc Arten der Familie Podapolipidae (Acari: Tarsonemina) von Carabiden. Mitt. Hamburg Zoo!. Mus. Ins!., 71:147-163. Stannard, L. 1. and S. M. Vaishampayan. 1971. Ovacarus clivinae, New genus and species (Acarina: Podapolipidae), an endoparasite of the Slender Seedcorn Beetle. Ann. Entomo!. Soc. Amer. 64:887-890. 7Husband and Swihart: A New Species of Mite (Acari: Podapolipidae) From a Michigan CaraPublished by ValpoScholar, 1986

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A New Species of Mite (Acari: Podapolipidae) From a Michigan Carabid Beetle, \u3ci\u3eChlaenius Pennsylvanicus\u3c/i\u3e

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