Gyrophaena (Gyrophaena) flavicornis Melsheimer

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 : 121-122

25. Gyrophaena (Gyrophaena) flavicornis Melsheimer

Figs 24, 159–165; Map 21

Gyrophaena (Gyrophaena) flavicornis Melsheimer, 1844: 31 ; Seevers 1951: 722; Moore and Legner 1975: 429; Campbell and Davies 1991: 106.

Description. Body length 2.0– 2.7 mm, broadly subparallel; head piceous; pronotum light to dark reddish-brown; elytra flavo-testaceous or reddish-brown with some small darker spots laterally and in scutellar region; abdomen reddish-brown, apical portion often darker. Punctation: vertex of head with at least 10 moderately-sized coarse punctures on each side, pronotum with two median rows of coarse punctures and additional punctures scattered elsewhere, elytra with fine, sparse punctures. Microsculpture: reticulate throughout but weaker on elytra. Antennae as illustrated (Fig. 24). Pronotum 1.4 times as wide as long. MALE: tergite 8 with two small lateral teeth and usually with two minute median teeth (occasionally only one tooth present or the teeth reduced to small tuberosities), apical margin slightly emarginate medially (Fig. 161); sternite 8 rounded apically (Fig. 162). Median lobe of aedeagus with complex tubus, its apex

Map 2Ι. Collection localities in New Brunswick, Canada of Gyrophaena flavicornis

with subapical hook-like projection (Fig. 159), apical projection of internal sac elongate and truncate apically (Fig. 159). Paramere as illustrated (Fig. 160). FEMALE. Tergite 8 truncate apically (Fig. 164); sternite 8 slightly produced apically (Fig. 165); spermatheca as illustrated (Fig. 163).

Bionomics. Macrohabitat: Mixed forest, hardwood forest, rich Appalachian hardwood forest, red oak and red maple forest, 8.5-year-old regenerating mixed forest, mature red spruce and red maple forest. Microhabitat: on/in gilled mushrooms on forest floor, in gilled mushroom on stump, on Pleurotis species growing on a log, and in Porodaedalea piceina (Peck) Niemalä on dead standing beech tree. This species has also been found in decaying mushrooms, on white fungus on white birch. Collecting period: June, July, August, and September. Collecting method: sifting mushrooms, aspirating, and hand collecting.

Distribution (Map 21). CANADA: New Brunswick, Nova Scotia, Ontario, and Quebec; UNITED STATES: District of Columbia, Illinois, Indiana, Kentucky, Maine, Massachusetts, Michigan, New Hampshire, North Carolina, Maryland, New Jersey, New York, Pennsylvania, Rhode Island, Tennessee, Vermont, Virginia, Wisconsin, and West Virginia.