Liogluta microgranulosa Klimaszewski & Webster

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: 233

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Liogluta microgranulosa Klimaszewski & Webster

sp. n.

Liogluta microgranulosa Klimaszewski & Webster  sp. n. Figs 58-64


(male). Canada, New Brunswick, Restigouche Co., Jacquet River Gorge P.N.A., 47.7361°N, 66.0778°W, 16.VIII.2010, R.P. Webster // beaver dam, among sticks and debris near an overflow area of dam (near flowing water) (LFC). Paratypes: same data as holotype (1 ♂, 3 ♀, LFC; 2 ♂, 7 ♀, NBM; 4 ♂, 5 ♀, 1 sex undetermined, RWC); Jacquet River Gorge P.N.A., 47.7357°N, 66.0774°W, 24.VII.2008, R.P. Webster// Margin of pond, among leaves and sedges near pond margin (1♀, LFC). York Co., Fredericton, 45.9361°N, 66.6747°W, 17.VIII.2009, R.P. Webster // Beaver dam, outer margin under overhanging sticks near water (1 ♀, RWC).


Microgranulosa  is a Latin adjective meaning microgranulate, in reference to the minute sculpture on the elytra of this species.


This species may be distinguished by the following combination of characters: body narrowly subparallel; head, apical articles of antennae, and posterior part of abdomen black, elytra brownish and mottled with black, remaining parts reddish-brown (Fig. 58); length 4.6-5.1 mm; integument of forebody with moderately pronounced meshed microsculpture, surface moderately glossy (Fig. 58); head about one-quarter narrower than maximum width of pronotum (Fig. 58); pronotum transverse, about evenly wide in basal half of its length, then strongly narrowed apically (Fig. 58); elytra at suture about as long as pronotum, surface finely and densely microgranulose; basal three articles of metatarsus about equally elongate, each longer than fourth article. Male. Apical margin of tergite VIII with very broad, very obtusely angular projection, with obtuse lateral angles and small tooth medially, margin often micro-crenulate (Fig. 60); sternite VIII rounded apically (Fig. 61); median lobe of aedeagus with tubus distinctly arched ventrad in apical half, apical part narrow (Fig. 59). Female. Tergite VIII with apical margin obtusely angulate (Fig. 62); sternite VIII with apical margin slightly emarginate medially (Fig. 63); spermatheca with stem long, sinuate, spiral posteriorly, capsule club-shaped with apical invagination deep and narrow (Fig. 64).


Canada: Known only from New Brunswick, Canada.

Natural history.

Nearly all adults from New Brunswick were collected from American beaver ( Castor canadensis  Kuhl) dams. Most were collected from among sticks and debris near an overflow area of the dam, another from under overhanging sticks on the outer margin of the dam. One individual was collected from among leaves and sedges near a pond margin. Specimens were collected in July and August.