Gyrophaena (Gyrophaena) fuscicollis, 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 : 115-116

IX. Gyrophaena (Gyrophaena) fuscicollis species group ( Seevers, 1951: 712) 21. Gyrophaena (Gyrophaena) fuscicollis Casey

Figs 20,132–138; Map 17

Gyrophaena (Gyrophaena) fuscicollis Casey, 1906: 296 ; Seevers 1951: 712; Moore and Legner 1975: 429.

Description. Body length 2.0– 2.4 mm, narrowly subparallel; head black; pronotum fuscous; elytra flavate with slightly darker small spots near scutellum; abdomen rufotestaceous, apical portion of abdomen often slightly darker. Punctation: vertex of head with a few moderately-sized umbilicate punctures on each side, pronotum with two median rows of confused punctures and additional punctures elsewhere, elytra with fine, sparse punctures. Microsculpture: reticulate throughout except for pronotum, most evident on head. Antennae as illustrated (Fig. 20). Pronotum 1.2 times as wide as long. MALE: tergite 8 with two lateral lobe-shaped teeth and two small median teeth, apical margin of disc slightly emarginate (Fig. 134); sternite 8 rounded apically (Fig. 135). Median lobe of aedeagus with narrowly elongate tubus and hooked apex, bearing one long ventral projection (Fig. 132), apical projection of internal sac elongate with long and everted flagellum (Fig. 132). Paramere as illustrated (Fig. 133). FEMALE. Tergite 8 truncate apically (Fig. 137); sternite 8 rounded apically (Fig. 138); spermatheca with a small capsule and a long, U-shaped stem (Fig. 136).

Map Ι7. Collection localities in New Brunswick, Canada of Gyrophaena fuscicollis

Bionomics. Macrohabitat: mixed forest and hardwood forest with hemlock. This species has also been found in spruce/pine/fir forests (80–120 years old), old deciduous forest, hemlock forest (120+ years old), and in a meadow. Microhabitat: in/on gilled mushrooms and small gilled mushrooms on log. This species has also been reported from a rotting mushroom, on Heterobasidium annosum , on white fungus on a white birch, on red maple log and in a decayed log. Collecting period: July to September. Collecting method: sifting mushrooms, aspirating, and hand collecting.

Distribution (Map 17). CANADA: New Brunswick; UNITED STATES: District of Columbia, Illinois, New York, Pennsylvania, and Wisconsin