Gyrophaena (Gyrophaena) modesta 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 : 114-115

20. Gyrophaena (Gyrophaena) modesta Casey

Figs 19, 125–131; Map 16

Gyrophaena modesta Casey, 1906: 296 ; Seevers 1951: 710; Moore and Legner 1975: 430; Campbell and Davies 1991: 106.

Description. Body length 1.8–2.0 mm, narrowly subparallel; head rufo-piceous; pronotum flavate; elytra flavate with slightly darker irregularly distributed small spots;

Map Ι6. Collection localities in New Brunswick, Canada of Gyrophaena modesta

abdomen rufo-flavate, apical part of abdomen often darker. Punctation: vertex of head with about 10 large umbilicate punctures on each side, pronotum with about nine large punctures in two median rows and additional punctures elsewhere, elytra with fine, sparse punctures. Microsculpture: reticulate throughout except for pronotum, most evident on head. Antennae as illustrated (Fig. 19). Pronotum 1.5 times as wide as long. MALE: tergite 8 with two lateral lobes and one or two small median teeth or teeth absent, apical margin of disc slightly emarginate (Fig. 127); sternite 8 rounded apically (Fig. 128). Median lobe of aedeagus with narrowly elongate tubus bearing one short ventral projection with blunt apex; flagellum extended and long, sinuate in shape (Fig. 125). Paramere as illustrated (Fig. 126). FEMALE. Tergite 8 truncate apically (Fig. 130); sternite 8 rounded apically (Fig. 131); spermatheca as illustrated (Fig. 129).

Bionomics. Macrohabitat: Mixed forest, hardwood forest, red spruce forest, red spruce and yellow birch forest, mature red spruce and red maple forest, mature red spruce and eastern white cedar forest, oak and red maple forest. This species has been collected in association with grasses. Microhabitat: on fresh gilled mushrooms on forest floor, in decaying gilled mushroom (one occurrence), and on Pleurotus sp. on log. Collecting period: August, September, and October. Collecting method: sifting mushrooms, aspirating, and hand collecting specimens.

Distribution (Map 16). CANADA: New Brunswick; UNITED STATES: Illinois, Indiana, Michigan, Minnesota, New Hampshire, and New York.