Gyrophaena (Gyrophaena) affinis, Sahlberg, 1834

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 : 104-105

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Gyrophaena (Gyrophaena) affinis


IX. Gyrophaena (Gyrophaena) affinis View in CoL species group ( Seevers, 1951: 694) 12. Gyrophaena (Gyrophaena) affinis Sahlberg *

Figs 11, 78–84; Map 8

Gyrophaena affinis Sahlberg 1834: 383 View in CoL ; Seevers, 1951: 695; Moore and Legner 1975: 427; Campbell and Davies 1991: 106.

Gyrophaena subpunctata Casey, 1906: 299 View in CoL . Synonymized by Seevers 1951: 695.

Gyrophaena lacustris Casey, 1906: 299 View in CoL . Synonymized by Seevers 1951: 695.

Description. Body length 1.7–2.1 mm, narrowly oval; head rufo-piceous to piceous; pronotum flavate to light brown; elytra testaceous to light brown; abdomen rufo-flavate, apical part of abdomen usually darker. Punctation: vertex of head with about 10 large umbilicate punctures on each side, pronotum with a few large punctures, elytra with numerous shallow punctures. Microsculpture: reticulate throughout. Antennae as illustrated (Fig. 11). Pronotum 1.4 times as wide as long. MALE: tergite 8 with two long lateral teeth, margin smooth between them (Fig. 80); sternite 8 broadly rounded apically (Fig. 81). Median lobe of aedeagus with narrowly triangular and subapically split tubus, its venter sinuate and angulate basally, apex narrow and rounded (Fig. 78), dorsal projection of internal sac moderately elongate and coiled with flagellum inside (Fig. 78). Paramere as illustrated (Fig. 79). FEMALE. Tergite 8 truncate apically (Fig. 83); sternite 8 broadly rounded apically and pointed medially (Fig. 84); spermatheca as illustrated (Fig. 82).

Map 8. Collection localities in New Brunswick, Canada of Gyrophaena affinis

Bionomics. Macrohabitat: mixed forest, 8.5-year-old regenerating mixed forest, eastern white cedar swamp, mature red spruce, and red maple forest. Microhabitat: on/ in gilled mushrooms on forest floor, on log, and on a stump, on small gilled mushrooms on side of decayed log. This species has also been found in rotting mushrooms, on orange bracket (polypore) fungus, on bracket fungus on white birch, and on Pleurotus sp. on dead standing Populus tremuloides . Collecting period: June, July, August, and September. Collecting method: sifting mushrooms, aspirating, and hand collecting specimens.

Distribution (Map 8). This is an adventive Palaearctic species in North America. CANADA: British Columbia, Manitoba, New Brunswick, Nova Scotia, and Quebec; UNITED STATES: District of Columbia, Illinois, Indiana, Iowa, Kentucky, Maine, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Pennsylvania, Tennessee, Washington, West Virginia, and Wisconsin.














Gyrophaena (Gyrophaena) affinis

Klimaszewski, Jan, Webster, Reginald & Savard, Karine 2009

Gyrophaena subpunctata

Seevers CH 1951: 695
Casey TL 1906: 299

Gyrophaena lacustris

Seevers CH 1951: 695
Casey TL 1906: 299

Gyrophaena affinis

Campbell JM & Davies A 1991: 106
Moore I & Legner EF 1975: 427
Seevers CH 1951: 695
Sahlberg CR 1834: 383
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