Gyrophaena (Gyrophaena) bihamata

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 : 118-120

XIII. Gyrophaena (Gyrophaena) bihamata species group ( Seevers, 1951: 717) 23. Gyrophaena (Gyrophaena) uteana Casey

Figs 22, 145–151; Map 19

Gyrophaena (Gyrophaena) uteana Casey, 1906: 292 ; Seevers 1951: 718; Moore and Legner 1975: 432; Campbell and Davies 1991: 107.

Gyrophaena pacifica Casey, 1906: 293 . Synonymized by Seevers 1951: 718.

Description. Gyrophaena uteana is externally similar to G. gaudens but the latter species has infuscated antennae while the former has antennae approximately uniformly light yellow.

Body length 1.4–1.7 mm, narrowly oval; head piceous; pronotum brown to piceous; elytra brown or reddish-brown with piceous sutural region and posterior angles; abdomen reddish-brown, apical part often darker and piceous. Punctation: vertex of head with at least six moderately-sized umbilicate punctures on each side, pronotum with six punctures in two confused 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. 22). Pronotum 1.5 times as wide as long. MALE: tergite 8 with two long and narrow lateral teeth and two very small median teeth close to each other (Fig. 147); sternite 8 rounded apically (Fig. 148). Median lobe of aedeagus with long and narrowly produced tubus bearing large angular swelling in the

Map Ι9. Collection localities in New Brunswick, Canada of Gyrophaena uteana

25. G. subnitens 26. G. meduxnekeagensis 27. G. polita

Figures 22–27. Gyrophaena species in dorsal view (apical part of abdomen removed): 22 G. (G.) uteana Casey 23 G. (G.) gaudens Casey 24 G. (G.) flavicornis Melsheimer 25 G. (P.) subnitens Casey 26 G. (P.) meduxnekeagensis Klimaszewski and Webster , sp. n. and 27 G. (P.) polita (Gravenhorst) .

middle of ventral margin, apex with subapical minute projection (Fig. 145), apical projection of internal sac elongate and irregular in shape (Fig. 145). Paramere as illustrated (Fig. 146). FEMALE. Tergite 8 truncate apically (Fig. 150); sternite 8 rounded apically and slightly pointed (Fig. 151); spermatheca as illustrated (Fig. 149).

Bionomics. Macrohabitat: mixed forest, on ridge with red oaks surrounded by a silver maple forest, mature red spruce and red maple forest. Microhabitat: in/on gilled mushrooms and on bracket fungi. Collecting period: June, August and September. Collecting method: sifting mushrooms and aspirating specimens.

Distribution (Map 19). CANADA: New Brunswick, Quebec, and British Columbia; UNITED STATES: California, Colorado, and Utah.