Boreophilia venti (Lohse, 1990)

Klimaszewski, Jan, Sikes, Derek S., Brunke, Adam & Bourdon, Caroline, 2019, Species review of the genus Boreophilia Benick from North America (Coleoptera, Staphylinidae, Aleocharinae, Athetini): Systematics, habitat, and distribution, ZooKeys 848, pp. 57-102 : 57

8. Boreophilia venti (Lohse, 1990) Figs 63-70

Dimetrota venti (Lohse), in Lohse et al. 1990: 183.

Holotype (male).

Canada, Yukon Territory, British Mts., Windy Ridge, 450 m, 69.27N, 140.26W, 2.VII.1984, 84-47, sifting Salix litter, JM Campbell (CNC).

Paratypes.

labeled as the holotype (CNC) 3 sex undetermined.

Diagnosis.

Body narrowly subparallel, forebody moderately glossy, abdomen slightly more so (Fig. 63); length 3.0-3.4 mm; uniformly dark brown to black, appendages yellowish brown or reddish brown; antennomeres VIII-X subquadrate; pronotum ca. as long as elytra at suture, maximum width of pronotum slightly less than maximum width of elytra. Male. Tubus of median lobe of aedeagus arcuate basally, straight apically and produced ventrad in lateral view, apex broad and rounded in lateral view (Fig. 64), bulbus broad and with two large sclerites, each apically curved, sharply pointed, and with small median projection (Figs 64, 65); tergite VIII arcuate apically (Fig. 66); sternite VIII elongate, parabolic apically (Fig. 67). Female. Spermatheca: capsule club-shaped, tubular basally and rounded apically, with small apical invagination; stem sinuate and coiled posteriorly (Fig. 70); tergite VIII arcuate apically and truncate medially (Fig. 68); sternite VIII rounded apically and truncate medially, antecostal suture distinctly sinuate (Fig. 69). Spermatheca of this species is very similar to that of B. neoinsecuta (Figs 79, 80), but shape of apex of female sternite VIII are different in the two species (Figs 69, 78).

Distribution.

Holarctic species, recorded from Europe, Finland; Asia, East and West Siberia, Mongolia; and North America: Canada: YT; USA: AK [new record].

Collection data.

Habitat [new data]: Salix litter; Salix tundra hillside, lakeshore debris. Collecting methods: sifting Salix litter, pitfall traps, hand/aspirator collecting from under rocks. Collecting period: May and July.

Additional material examined.

USA, Alaska, Anaktuvuk Pass, 640-680 m el., 68.14049N, 151.74091W,+/- 2 km in and around village, hand, forceps, 2-22.V.2016, D Sikes, K Daly UAM100427681 (UAM) 1 female; Anaktuvuk Pass, 665 el., 68.14059N, 151.74266W, +/- 200 m, Salix , tundra hillside, cobble, pollinator pitfall, 20.V.2016, D Sikes, K Daly, UAM100427683 (UAM) 1 male; UAM100427684 (UAM) 1 female; UAM100427689 (UAM) 1 female; UAM100427693 (UAM) 1 male.

Comments.

Lohse, in Lohse et al. 1990, described Dimetrota venti from Yukon. This species is extremely similar externally and genitally to Boreophilia insecuta described from Europe. The genitalia of B. insecuta were illustrated by Brundin (1954), and here, based on a specimen from Siberia (Figs 82, 83).

In B. venti , the tubus of the median lobe is distinctly arcuate in lateral view (Fig. 64), but in B. insecuta it is always straight basally (Fig. 82) and the two main sclerites are slightly different in shape (Figs 64, 65, 82, 83). However, the remaining genital characters are similar and females of the two species are not distinguishable morphologically.