Liogluta nigropolita (Bernhauer, 1907)

Klimaszewski, Jan, Webster, Reginald P., Langor, David W., Sikes, Derek, Bourdon, Caroline, Godin, Benoit & Ernst, Crystal, 2016, A review of Canadian and Alaskan species of the genus Liogluta Thomson, and descriptions of three new species (Coleoptera, Staphylinidae, Aleocharinae), ZooKeys 573, pp. 217-256: 228-229

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Liogluta nigropolita (Bernhauer, 1907)


Liogluta nigropolita (Bernhauer, 1907)  Figs 35-43

Atheta nigropolita  Bernhauer, 1907: 390. As Liogluta  : Lohse and Smetana 1985: 286.

Liogluta nigropolita  Syntype (male): USA, New Hampshire, Mt. Washington ( FMNH).

New locality data.

CANADA: Quebec: Gt. Whale Riv., 5.IX.1949, J.R. Vockeroth (1 sex undetermined, CNC). Northwest Territories: Yellowknife, 62.50714°N, 113.39443°W, 236 m, mesic habitat replicate #2, Yellow Pan Trap #2, 15-18.VI.2011, col. NBP Field Party (1 ♀, LFC).


This species may be distinguished by the following combination of characters: body elongate with elytra and abdomen broad, moderately robust, dark brown to black with tarsi and tibiae often reddish-brown, elytra sometimes with reddish tinge (Figs 35); length 3.5-4.0 mm; integument of forebody with moderately pronounced meshed microsculpture, surface highly glossy; head about one-eighth narrower than maximum width of pronotum (Fig. 35); pronotum transverse, about evenly wide in posterior half, then distinctly narrowing apicad, forming round apical angles (Fig. 35); elytra at suture slightly longer than pronotum (Fig. 35); basal four articles of metatarsus about the same length, each shorter than fifth article. Male. Tergite VIII with apical margin broadly arcuate, without teeth or crenulations (Fig. 38); sternite VIII rounded apically (Fig. 39); median lobe of aedeagus with tubus broadly arcuate ventrally and with apex narrow and pointed in lateral view (Fig. 36); tubus broad and triangular apically in dorsal view (Fig. 37). Female. Tergite VIII broadly arcuate apically (Fig. 40); sternite VIII evenly rounded apically, with antecostal suture distinctly sinuate (Fig. 41); spermatheca with spherical capsule with invagination deep and narrow, stem S-shaped, gradually becoming very narrow posteriad (Figs 42, 43).

Natural history.

Adults occur in moss and leaf litter ( Lohse et al. 1990).


Canada: LB, NF, NT, NU, QC, YT. USA: NH ( Lohse et al. 1990; Klimaszewski et al. 2012; Bousquet et al. 2013).


This species is probably transcontinental in northern Canada.