Clusiota antennalis Klimaszewski & Godin

Klimaszewski, Jan, Webster, Reginald P., Sikes, Derek, Bourdon, Caroline & Labrecque, Myriam, 2015, A review of Canadian and Alaskan species of the genera Clusiota Casey and AthetaThomson, subgenusMicrodota Mulsant & Rey (Coleoptera, Staphylinidae, Aleocharinae), ZooKeys 524, pp. 103-136 : 121-123

Taxon classification Animalia Coleoptera Staphylinidae

Clusiota antennalis Klimaszewski & Godin Figs 96-103

Clusiota antennalis (For diagnosis, see Klimaszewski et al. 2008)

Clusiota antennalis Klimaszewski & Godin in Klimaszewski et al. 2008.

Material examined.

Canada, British Columbia, Cooper River Valley, A31698/F4-1-1, 4. VII– 7.VIII.1996, +/- 20 m. pitfall trap, J. Lemieux (LFC) 1 female, 1 sex? same data except: A37541/P2-1-5, 6. VI– 4.VII (LFC) 2 females; A36435/04-1-1, 7. VI– 6.VII.1996 (LFC) 2 males; Vancouver Island, Mt. Cain: 50.14°N, 126.21°W, 5. VI– 27.VI.1996, 16.6 PIT2, N. Winchester (ZML) 2 females; 50.14°N, 126.21°W, 27, VI– 13.VII.1966, 16.6.PIT 3, N. Winchester (ZML) 3 females; 50.13°N, 126.21°W, 23. VI– 7.VII.1997, 16.6 PIT2, N. Winchester (ZML) 18 females; 50.13°N, 126.21°W, 7. VII– 20.VII.1997, 16.6 PIT8, N. Winchester (ZML) 7 females; 50.13°N, 126.21°W, 20. VII– 5.VIII.1997, 16.6 PIT 6, N. Winchester (ZML) 1 female; 50.13°N, 126.21°W, +/- 20 m, 1. IX– 19.IX.1997, 16.6 PIT8, N. Winchester (ZML) 5 males; same data except: 15. IX– 28.IX.1996, 17.4 PAN 3 (ZML) 1 female; 28. IX– 12.X.1996, 16.6 PAN 1 (ZML) 3 females; 12. X– 1.XI.1996, 16.6 PAN3 (ZML) 1 male; 50.15°N, 126.25°W, 19. IX– 4.X.1997, 17.4 PIT 7 (ZML) 1 male, 1 female. U.S.A., Alaska, Prince of Wales Is.: Staney Ck., 41-45 m el., 55.79901°N, 133.11782°W, old growth, pitfall 2, 25. VI– 9.VII.2012, J. Stockbridge et al. UAM100340147 (UAM) 1 female; same data except: 11-25.VI.2012, UAM100338700 (UAM) 1 female;14-28.V.2012 UAM100338413, UAM100338412, UAM100338414 (UAM) 3 females; Luck Lk. 2 Rd., old growth, 105 m el., 55.96855°N, 132.79615°W, +/- 10 m pitfall 3, 29.VI-8.VII.2010, J. Stockbridge UAM100278064 (UAM) 1 female; Luck Lk. 1 Rd., old growth, 101 m el., 55.97805°N, 132.75456°W, +/- 10 m. pitfall, 8-30.VII.2010, J. Stockbridge, C. Bickford UAM100279634, UAM100279635 (UAM) 2 females; same data except: 27. VI– 11.VII.2012 UAM100343219, UAM100343218, UAM100343246 (UAM) 3 females; pitfall 1, 13-27.VI.2012, J. Stockbridge et al. UAM100339932 (UAM) 1 female; Hatchery Ck. 1, 2nd growth, 49 m el., 55.92654°N, 132.95645°N, +/- 10 m pitfall 3, 18. V– 4.VI.2010, J. Stockbridge, C. Bickford UAM100262426 (UAM) 1 female; Dall Is., p. 12 el. 688 m., 54.99342°N, 133.01688°N, +/-4 m krummholtz, Tsuga mertensiana , Vaccinium ovalifolium , pitfall, 15-16.VII.2011, D.S. Sikes UAM100329960, UAM100329969 (UAM) 2 females. UAM data can be downloaded at http://arctos.database.museum/saved/Clusiota_antennalis.

Distribution.

Originally described from Dyea, AK ( Klimaszewski et al. 2008). It is here newly reported in Canada from BC, and from new localities in AK. Clusiota antennalis is a western Nearctic species known only from western BC and AK.

Natural history.

In AK, the holotype was captured in alder litter, and the recent AK specimens were collected primarily in pitfall traps from old-growth Pacific rain forests at low elevations although two specimens were collected in an alpine habitat above 650 m elevation. In BC, specimens from Vancouver Island were captured continuously from June to November in pitfall and pan traps.

Comments.

Females of this species have a spermatheca extremely similar to those of Atheta (Microdota) subtilis and Atheta (Microdota) pseudosubtilis . Clusiota antennalis is easily separated from the two species by the swollen basal antennal article (Fig. 96), and from Atheta subtilis by much shorter elytra (Fig. 96). It differs from all Nearctic Clusiota and Microdota species by the shape of the genitalia.