Gyrophaena (Gyrophaena) dybasi Seevers, 1951

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 : 105-106

13. Gyrophaena (Gyrophaena) dybasi Seevers

Figs 12, 85–88; Map 9

Gyrophaena (Gyrophaena) dybasi Seevers, 1951: 697 ; Moore and Legner 1975: 429.

Description. Body length 1.7–1.9 mm, narrowly oval; head rufo-piceous to piceous; pronotum testaceous; elytra dark testaceous to light brown with paler humeri; ab-

Map 9. Collection localities in New Brunswick, Canada of Gyrophaena dybasi

domen rufo-testaceous, apical portion of abdomen sometimes darker. Punctation: vertex of head with about 10 large umbilicate punctures on each side, pronotum with two complete median rows of large punctures, elytra with numerous dense punctures. Microsculpture: reticulate throughout. Antennae as illustrated (Fig. 12). Pronotum 1.7 times as wide as long. MALE: tergite 8 with two long lateral teeth and two small median teeth (Fig. 87); sternite 8 broadly rounded apically (Fig. 88). Median lobe of aedeagus with narrowly elongate sinuate tubus projecting ventrally, apex narrow and pointed (Fig. 85), dorsal projection of internal sac narrowly elongate and coiled, flagellum partially everted and approximately straight (Fig. 85). Paramere as illustrated (Fig. 86). FEMALE. Unknown.

Bionomics. Macrohabitat: mixed forest. Microhabitat: on gilled mushrooms. Collecting period: June. Collecting method: sifting mushrooms and aspirating specimens.

Distribution (Map 9). CANADA: New Brunswick; UNITED STATES: Illinois, Indiana, Missouri, North Carolina, and Wisconsin.