Gyrophaena vitrina

Description. Body length 2.4 – 3.5 mm, broadly subparallel; head rufo-piceous; pronotum flavate with dark median band; elytra brown with silvery luster; abdomen Map Ι 8. Collection localities in New Brunswick, Canada of Gyrophaena vitrina flavate, apical portion of abdomen often slightly darker. Punctation: vertex of head with about six moderately-sized umbilicate punctures on each side, pronotum with two median rows of weak punctures and additional punctures elsewhere, elytra with fine, sparse punctures. Microsculpture: not apparent. Antennae as illustrated (Fig. 21). Pronotum 1.5 times as wide as long. MALE: tergite 8 with two lateral teeth and usually two (occasionally four) small median teeth, apical margin slightly emarginate (Fig. 141); sternite 8 produced apically (Fig. 142). Median lobe of aedeagus with narrowly elongate tubus and ventrally produced apex (Fig. 139), projection of internal sac narrowly elongate, flagellum slightly everted (Fig. 139). Paramere as illustrated (Fig. 140). FEMALE. Tergite 8 truncate apically (Fig. 143); sternite 8 produced posteriorly (Fig. 144); spermatheca not found [it may be very small and difficult to find or it is completely reduced]. Bionomics. Macrohabitat: mixed forest, hardwood forest, rich Appalachian hardwood forest, flood plain forest, and eastern white cedar swamps, and mature red spruce and red maple forest. Microhabitat: on gilled mushrooms on forest floor, on small gilled mushrooms on side of log, on bracket fungi, and on Trametes hirsuta on a poplar log. Collecting period: June, July, August, and September. Collecting method: sifting mushrooms and aspirating specimens.