Trichiusa pilosa
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Ordo: Coleoptera
Familia: Staphylinidae
Genus: Trichiusa
Name
Trichiusa pilosa Casey – Wikispecies link – Pensoft Profile
- Trichiusa pilosa Casey 1894[1]: 341, 343; Moore and Legner 1975[2]: 504. LECTOTYPE (female): USA: RI [Rhode Island; in orig. descrip. Boston Neck]; Casey determ. pilosa-3; Casey bequest 1925; Trichiusa pilosa Casey, Gusarov V.I. det. 2010; our lectotype designation label, present designation (USNM). PARALECTOTYPES: labelled as the lectotype except: Casey determ. pilosa-4(USNM)1 male; Casey determ. pilosa-5(USNM)1 female; Type USNM 39424(USNM)1 male.
- Trichiusa atra Casey 1906[3]: 330; Moore and Legner 1975[2]: 504. New Synonymy. LECTOTYPE (male): USA: McPherson, W. Kansas; atra Casey; Type USNM 39426; Casey bequest 1925; Lectotypus Trichiusa atra Casey, Gusarov V.I. det. 2011 [unpublished designation]; our lectotype designation label, present designation (USNM).
- Trichiusa monticola Casey 1906[3]: 328; Moore and Legner 1975[2]: 504. New Synonymy. LECTOTYPE (male): USA: Coeur d’Alene, Idaho [in orig. descrip. H.F. Wickham]; monticola Casey; Type USNM 39421; Lectotypus Trichiusa monticola Casey, Gusarov, V.I. des. 2011[unpublished designation]; our lectotype designation label, present designation (USNM).
- Trichiusa parviceps Casey 1906[3]: 328; Moore and Legner 1975[2]: 504. New Synonymy. LECTOTYPE (female): USA: Cin. [in orig. descript.: Ohio, Cincinnati, Chas. Dury]; parviceps Casey; Casey bequest 1925; Lectotypus Trichiusa parviceps, Gusarov V.I. des. 2011 [unpublished designation]; our lectotype designation label, present designation (USNM).
- Trichiusa postica Casey 1906[3]: 330; Moore and Legner 1975[2]: 504. New synonymy. LECTOTYPE (male): W.H.H. [W.H. Harrington], Ottawa, Canada; Type USNM 39427; Casey bequest 1925; Trichiusa pilosa Casey, Gusarov, V.I. det. 2010; our lectotype designation label, present designation (USNM).
Diagnosis
Body broadly oval (Fig. 16), length 1.5–1.8 mm, dark brown with reddish tinge and slightly paler base of abdomen or uniformly black, appendages usually lighter than rest of body (Fig. 16); sparsely punctate and pubescent; setae straight and erect, particularly on pronotum; integument strongly glossy; head slightly narrower than pronotum; pronotum moderately transverse, rounded laterally and basally, distinctly narrower than elytra; elytra broad at suture about as long as pronotum; abdomen arcuate laterally and broadest at middle of its length. MALE. Median lobe of aedeagus with oval bulbus and triangularly shaped tubus in dorsal view (Fig. 18), in lateral view tubus slightly sinuate and narrow apically with apex narrowly rounded (Fig. 17); internal sac structures not pronounced; tergite VIII short and truncate apically (Fig. 19); sternite VIII slightly produced apically and rounded at apex and with narrow distance between base of disc and antecostal suture (Fig. 20). FEMALE. Tergite VIII short and truncate apically (Fig. 22); sternite VIII broadly arcuate apically (Fig. 23); spermatheca with broad and sac-shaped capsule with minute apical invagination, stem narrow, sinuate and narrowly twisted apically (Fig. 21).
Distribution
| Origin | Nearctic |
| Distribution | Canada: AB, BC, NS, ON (as Trichiusa postica); USA: ID, IN, KS, OH, RI |
| New records | New provincial records: Alberta: c. 100 km NW of Peace River, Block C14, white spruce regenerating stand, 56.7079°, -118.7775°, 14.IX.2011 (NoFC) 1 female; British Columbia: Liard River, bison scats, 59.4288°, -126.1157°, 468 m, 10.VI.2013 (BGC, LFC) 1 male, 1 female |
| References | Casey 1894[1], 1906[3], Moore and Legner 1975[2], Majka and Klimaszewski 2010[4] (as Trichiusa postica), Brunke et al. 2012[5], Bousquet et al. 2013[6] (as Trichiusa postica) |
Natural history
In Alberta, one female was collected using a window trap deployed in a 10-year-old regenerating white spruce stand. The British Columbia specimens were found on bison scat. The adults were collected from June to September.
Comments
The two specimens from British Columbia agree with the type series in external morphology and shape of genitalia except for the entirely black body. It is well known that many aleocharine species exhibit darker colour at higher latitudes compared with more southern populations.
Taxon Treatment
- Klimaszewski, J; Godin, B; Langor, D; Bourdon, C; Lee, S; Horwood, D; 2015: New distribution records for Canadian Aleocharinae (Coleoptera, Staphylinidae), and new synonymies for Trichiusa ZooKeys, (498): 51-91. doi
Images
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Other References
- ↑ 1.0 1.1 Casey T (1894) Coleopterological notices – V. Annals of the New York Academy of Sciences 7: 281–606. [often cited as 1893]
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Moore I, Legner E (1975) A catalogue of the Staphylinidae of America north of Mexico (Coleoptera). University of California, Division of Agricultural Science, Special Publication 3015, 514 pp.
- ↑ 3.0 3.1 3.2 3.3 3.4 Casey T (1906) Observations on the staphylinid groups Aleocharinae and Xantholinini, chiefly of America. Transactions of the Academy of Sciences of St Louis 16: 125–434.
- ↑ Majka C, Klimaszewski J (2010) Contributions to the knowledge of the Aleocharinae (Coleoptera, Staphylinidae) in the Maritime Provinces of Canada. ZooKeys 46: 15–39. doi: 10.3897/zookeys.46.413
- ↑ Brunke A, Klimaszewski J, Dorval J, Bourdon C, Paiero S, Marshall S (2012) New species and distributional records of Aleocharinae (Coleoptera, Staphylinidae) from Ontario, Canada, with a checklist of recorded species. ZooKeys 186: 119–206. doi: 10.3897/zookeys.186.2947
- ↑ Bousquet Y, Bouchard P, Davies A, Sikes D (2013) Checklist of beetles (Coleoptera) of Canada and Alaska. Pensoft Publishers, Sofia-Moscow, 402 pp.
