Gyrophaena (Gyrophaena) gilvicollis Casey, 1906

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 : 113-114

19. Gyrophaena (Gyrophaena) gilvicollis Casey

Figs 18, 118–124; Map 15

Gyrophaena (Gyrophaena) gilvicollis Casey, 1906 , 296; Seevers 1951: 709; Moore and Legner 1975: 429; Campbell and Davies 1991: 106 [cited doubtfully from Ontario with no locality records from Canada].

Description. Body length 1.8–2.2 mm, narrowly elongate; head piceous to black; pronotum flavate; elytra piceous to black with testaceous humeri and irregular small spots dispersed posteriorly; abdomen flavate, apical part of abdomen darker. Punctation: vertex of head with about 10 large umbilicate punctures on each side, pronotum with a few dispersed large punctures, elytra with fine and sparse punctures. Microsculpture: reticulate throughout except for pronotum, strongest on head. Antennae as illustrated (Fig.

Map Ι5. Collection localities in New Brunswick, Canada of Gyrophaena givicollis

18). Pronotum 1.2 times as wide as long. MALE: tergite 8 with two short medio-lateral lobes and two small median teeth, occasionally reduced to small tuberosities or absent, apical margin of disc emarginated medially (Fig. 120); sternite 8 emarginate apically (Fig. 121). Median lobe of aedeagus with elongate tubus bearing two short baso-ventral projections near crista apicalis (Fig. 118), flagellum projecting externally, sinuate in shape (Fig. 118). Paramere as illustrated (Fig. 119). FEMALE. Tergite 8 truncate apically (Fig. 123); sternite 8 rounded apically (Fig. 124); spermatheca as illustrated (Fig. 122).

Bionomics. Macrohabitat: mixed forest, hardwood forest, on ridge with red oak in silver maple forest, oak and red maple forest, and spruce forest. Microhabitat: on/in gilled mushrooms on forest floor, on decaying fleshy mushroom (one adult). Collecting period: August and September. Collecting method: sifting mushrooms and aspirating specimens.

Distribution (Map 15). CANADA: New Brunswick; UNITED STATES: District of Columbia, Indiana, Michigan, New York, Pennsylvania, Virginia, and West Virginia.