Great Basin Naturalist Volume 45 Number 1 Article 8 1-31-1985 Mites (excluding chiggers) of mammals of Oregon John O. Whitaker Jr. Indiana State University, Terra Haute Chris Maser U.S. Department of the Interior, Bureau of Land Management, Corvallis, Oregon Follow this and additional works at: https://scholarsarchive.byu.edu/gbn Recommended Citation Whitaker, John O. Jr. and Maser, Chris (1985) "Mites (excluding chiggers) of mammals of Oregon," Great Basin Naturalist: Vol. 45 : No. 1 , Article 8. Available at: https://scholarsarchive.byu.edu/gbn/vol45/iss1/8 This Article is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Great Basin Naturalist by an authorized editor of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. MITES (EXCLUDING CHIGGERS) OF MAMMALS OF OREGON' John C). Whitaker, Jr.,' and Chris Maser' .\bstr.\ct.- New information on the ectoparasitic mites of the following species of mammals from Oregon is pre- sented: (1) pika—Ochotomi; (2) squirrels—Ewfamias, Spennophilus, Tamiascitirus; (3) grasshopper mouse— Oni/c/j- omiis; (4) woodrats—Neoforjifl; (5) muskrat—Ondafra; (6) jumping mice— Z«pi/s,- and (7) weasels—Miisfe/a, Spilogale. New records of species for the state and new host records are also given. Finally, a cross-referenced list of all known mites of wild mammals from Oregon is presented. Over the past several years, we have writ- and stained in Nesbitt's solution containing ten a series of papers on the ectoparasites of acid fuchsin, and mounted in Hoyer's solu- mammals from Oregon that include data on tion. Cover slips were ringed with Euperal. the mites of mammals from the following Identifications were verified by specialists as genera: Zapus (Whitaker 1979), Arborhrius necessary. and Lagurus (Whitaker and Maser 1979), Mites that constitute new records from Aplodontia (Whitaker et al. 1979), Neuro- mammals from Oregon are listed below. trichus and Scapanus (Whitaker et al. 1979a), Numbers in parentheses are the number of Sorex (Whitaker et al. 1980), Dipodomys and hosts with mites and the number of mites Perognathus (Maser and Whitaker 1980), found. Myotis, Antrozous, Eptesiciis, Lasionycteris, Lasiurus, Pipistrellus, and Plecotus (Whitaker Lagomorpha Pika, Ochotonidae: et al. 1983b), Microtus and Clethrioncnnys Ochotona princeps. Pika (4 from Linn Co.). Mite: (Whitaker and Maser 1984), and Thomomys Echinonyssus utahensis (1/1). (Whitaker et al., in press). Still in preparation are papers on the ectoparasites of the Town- RODENTIA send chipmunk (Eiitamias toivnsendi) and of Squirrels, Sciuridae: Eutamias amoenus. Yellow-pine chipmunk (2 from the genus Peroinyscus. Union County). Mites: Andwlaelaps fahrenholzi (2/4), I) is One purpose of this paper (Part to and Proctolaelaps sp. (1/4). present new data on the ectoparasitic, pho- Spennophilus heecheiji. Beechey ground squirrel (3 retic, and other mites regularly associated from Curry County). Mites: Andwlaelaps fahrenholzi and Haemogamasus occidentalis (1/1). with mammals for which we have small (2/2) Sperniophilus heldingi. Belding ground squirrel (3 sample sizes. The second purpose (Part II) is from Malheur County, 1 from Klamath County). Mites: to present a cross-referenced list of all known Andwlaelaps fahrenholzi (4/23), Dermacartis reticulosus ectoparasitic and phoretic mites (excluding (3/25), and Cheijlctus linsdalei (1/1). chiggers) from the wild mammals of Oregon Spermophilus lateralis. Mantled ground squirrel (2 from Harney County, 1 from Deschutes Coimty). Mites: and their host associations. Androlaelaps fahrenholzi (2/4) and Dermacarus sperm- ophilus (1/21). The latter species was described by Fain Part I. Mites of Selected Mammals and Whitaker (1978a). FROM Oregon Spermophilus toivnsendi. Townsend ground squirrel (10 from Malheur County). Mites: Androlaelaps fahren- Mammals for which new data are present- holzi (7/40), Macrocheles sp. (1/2), Dermacarus sperm- ophilus (1/2), and Eunjparasitus sp. (3/3). ed in this paper were from various parts of Spermophilus washingtoni. Washington ground squir- the state, as in given the species accounts. rel (3 from Morrow County). Mites: Androlaelaps Mites were preserved in 70% ethanol, cleared fahrenholzi (1/25) and Macrocheles sp. (2/2). 'This paper represents a partial contribution of the Oregon Coast Ecological Survey, Puget Sound Museum of Natural History, University of Puget Sound, Tacoma, Washington 98416. Department of Life Sciences, Indiana State University, Terre Haute, Indiana 47809. ' U.S. Department of the Interior, Bureau of Land Management, Forestry Sciences Laboratory, :3200 Jefferson Way, Corvallis, Oregon 97.33L 67 Vol. 45, No. 1 68 Great Basin Naturalist (1979) reported the following ectoparasites on this host Tamiasciurus douojasi. Chickaree (6 from Benton. from Oregon: Androlaelaps fahrenholzi, Xeotrondncula Deschutes, Coos, and Linn counties). Mites: Haenw^a- £(/- microti. X. harpcri. and Radfordia cuingi. masiis reidi (5/16), Eidaelaps stabuUnis (1/1). and rijpanisitus sp. (1/1). Native mice and woodrats, Cricetidae: RcUhrodontomijs megalotis. Western harvest mouse (1 Weasels, Mustelidae: from Jefferson County, 1 from Malheur County). Mites: Mustela erminea. Short-tailed weasel (8 from Lane, Androhielaps fahrenhohi (.3/2), Eubraclnihielaps debilis Coos, and Curry counties). Mites: Haemogamasus occi- (2/1). dcntalis (3/5), H. reidi (1/1), Eidaelaps stabularis (1/2), Peromy.scus numicidatus. Deer mouse (134 from Lin- Eubrachylaelaps debilis (1/1), Echinonyssus obsoletus coln, Lane, Coos, Curry, Linn, Deschutes, Jefferson, (1/1), E. utahensis (1/3), Ghjcyphagus hypudaei (1/12), Harney, Malheur, and Union counties). Included here is Orycteroxenus soricis (1/1), Euryparasitus sp. (1/1), and information on ectoparasites of 1.34 deer mice. Since we Anoetidae (1/1). have not published this information, we give it here Mustela frenata. Long-tailed weasel (4 from Coos. even though the sample size is larger than for most spe- Malheur, and Union counties). Mites: Androlaelaps cies included in this section. Mites: Ghjcijphagiis liy- fahrenholzi (2/8), Echinonyssus cynomys (3/.34), £. lon- piidaei (1/1), Androlaelaps casaUs (1/1), A. fahrenhohi gichelae (3/14), E. thomomys (3/9), £. obsoletus (1/24). (197/50), Echinomjssus obsoktus (10/2), £. "obsoletus" and Lynxacarus mustelae (1/16). variant (1/1), £. utahensis (11/9), Eubrachylaelaps circii- Mustela vison. Mink (1 from Lincoln County, 1 from laris (6/2), E. debilis (72/25), Euhiehips stahidaris (2/2), Coos County). Mites: Lynxacarus nearcticus (2/875-1- ). Huemo'^ammm reidi (3/3), Laehips kochi (1/1), Anoet- Echinonyssus staffordi (1/1), £. obsoletus (1/1), and idae (1/1), Cijrtolaelaps sp. (2/2), Eitryparasitus sp. Pseudoparasitus sp. nymph (1/2). (27/11), Proctokielaps sp. (2/2). Spilogcde putorius. Spotted skunk (12 from Lincoln. Onychomijs leucogaster. Northern grasshopper mouse Coos, and Curry coimties). Mites: Androlaelaps fahren- (2 from .Maihevir County). Mites: Androlaelaps fahren- holzi (1/1), Eulaelaps stabularis (3/18), Haemogamasus holzi (2/45>, Haemogamasiis onychoinydis (2/49), Is- reidi (8/10.5), Xenoryctes latiporus (1/4), Echinonyssus ihyropoda anmtus (1/1), Ornithonysstis bacoti (1/2), staffordi (1/1), Pygmephorus designatus (1/1), £((- Hadfordia subuliger (1/1), Myocoptes musculinus (1/1), cheylctia bishoppi (1/1), and Euryparasitus sp. (1/1). CAycijphagns hypiidaei (1/1), Euryparasittis sp. (2/.32), Proctokielaps sp. (2/4), Bakvrdania sp. (2/79), and Klee- New st.\te records for mites: mania sp. (2/9). Laelapidae: Haemogamasus onychomydis. Echino- Xeotoma cinerea. Bushy-tailed woodrat (11 from nyssus neotomae, E. staffordi, E. thomomys, Eu- Lane, Lincoln, Malheur, and I'nion counties). Mites: brachylaelaps circularis, Laelaps multispinosa. Gly- Androlaelaps fahrenholzi (2/6), Haemogamasus reidi cyphagidae: Dermacarus reticulosus, D. newyorkensis, (3/10), Etilaelaps stabuluris (3/5), Haemogamasus pon- Xenonicics latiporus. Cheyletidae: Chcyletus linsdalei. tiger (2/2), Echinonyssus neotomae (1/1), E. utahensis? Myobiidae: Radfordia subuliger. .Mycoptidae: Myocoptes (2/2), and Euryparasitus sp. (2/2). musculinus. Listrophoridae: Listrophorus americanus. L. \eotoJua fiiscipes. Dusky-footed woodrat {4 from Cur- dozieri, L. faini, L. ondatrae, L. lalidus. Lynxacarus ry, Klamath, and Lane covmties). Mites: Androliulaps mustelae, L. nearcticus. fahrenholzi (1/2) and Haemoganuisus reidi (2/2). Xeotoma lepida. Desert woodrat (3 from Malheur X\:\V MOST HECORl^S FOR PARASITIC: MITES; County). Mites: Androlachips fahrenholzi (3/6). Ochotona princeps-Ecliinonyssus utahensis. Eut(nnias amoenus-Androlaclaps f(direnholzi. Voles, Arvicolidae: Spermophilus heecheyi-Haemogamasits occidcntalis. Ondatra zibethieiis. Muskrat (12 from Coos and Mal- Spermophilus beldingi-.\ndrolaelaps fahrcidiolzi, Der- heur counties). Mites: Laehips midtispinosa (12/317), macarus reticulosus, Chcyletus lin.\dalci. VAbethaearus ondatrae (8/1213), Listrophorus faini Spermophilus tounsendi-Dcnuacarus spermophilus. (5/81), L. ondatrae (4/40), L. americanus (4/94), L. fipermophilus tcashingtoni-Androlaclaps fahrenholzi. f«/iV/i(.v (6/46), L. dozieri (6/129), and Radfordia zibeth- Tamiasciurus douglasi-Eulael(i))s stahidaris. ir«/i.s(l/3). Pcromyscus maniculat us- Echinonyssus obsoletus. E. The muskrat is unique in having sexcrai species all in obsoletus "variant." the same genus (IJstropliorns),