Gyrophaena (Gyrophaena) insolens Casey

Klimaszewski, Jan, Webster, Reginald & Savard, Karine, 2009, Review of the rove beetle species of the subtribe Gyrophaenina Kraatz (Coleoptera, Staphylinidae) from New Brunswick, Canada: new species, provincial records and bionomic information, ZooKeys 22 (22), pp. 81-170 : 108-109

16. Gyrophaena (Gyrophaena) insolens Casey

Figs 15, 100–106; Map 12

Gyrophaena (Gyrophaena) insolens Casey, 1906: 295 ; Moore and Legner 1975: 430.

Description. Body length 1.9–2.5 mm, narrowly oval; head rufo-piceous to piceous; pronotum rufo-testaceous; elytra piceous posteriorly with testaceous humeri, or uniformly testaceous; abdomen rufo-testaceous, apical part of abdomen sometimes darker. Punctation: vertex of head with about 10 large umbilicate punctures on each side, pronotum with two irregular median rows of large punctures, scattered punctures elsewhere, elytra with fine, sparse punctures. Microsculpture: reticulate throughout except for pronotum. Antennae as illustrated (Fig. 15). Pronotum 1.2 times as wide as long. MALE: tergite 8 with two lobe-shaped lateral teeth projecting inward and two, but occasionally only one, small median tooth (Fig. 102); sternite 8 broadly rounded apically (Fig. 103). Median lobe of aedeagus with elongate, tube-shaped tubus, bearing three ventral projections, a long basal one and two shorter median ones, one of which is thin and often overlapping or crossing over the wider one and giving the impression of only one median

Map Ι2. Collection localities in New Brunswick, Canada of Gyrophaena insolens

projection (Fig. 100); apical part of internal sac tubular and as long as tubus or extending beyond tubus and with extended flagellum projecting externally from the apex (Fig. 100) [specimens with internal sac longer than the tip of tubus are rare and are listed in locality data base with?]. Paramere as illustrated (Fig. 101). FEMALE.Tergite 8 truncate apically (Fig. 105); sternite 8 rounded apically (Fig. 106); spermatheca as illustrated (Fig. 104).

Bionomics. Macrohabitat: mixed forest, white and red spruce forest, eastern white cedar swamps, yellow birch and spruce forest, on ridge with oak in silver maple forest, and red oak and red maple forest. Microhabitat: on/in gilled mushrooms on forest floor, on Russula virescens . Collecting period: August and September. Collecting method: sifting mushrooms, aspirating, and hand collecting specimens.

Distribution (Map 12). CANADA: British Columbia, New Brunswick, Ontario; UNITED STATES: Michigan.