Gyrophaena caseyi Seevers, 1951**

Webster, Reginald P., Klimaszewski, Jan, Sweeney, Jon D. & DeMerchant, Ian, 2012, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, and an addition to the fauna of Quebec, Canada: Aleocharinae, ZooKeys 186, pp. 83-118 : 89

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Gyrophaena caseyi Seevers, 1951**


Gyrophaena caseyi Seevers, 1951** Map 11 View Map 11 illustrations Seevers (1951)

Material examined.

New Brunswick, Carleton Co., Meduxnekeag Valley Nature Preserve, 46.1910°N, 67.6740°W, 13.VIII.2006, R. P. Webster, mixed forest, on Pleurotus sp. on side of log (1 ♂, RWC); near Belleville, 1.3 km E jct. Rt. 540 & Plymouth Rd., 46.1880°N, 67.6848°W, 20.IX.2008, R. P. Webster, hardwood forest, in small gilled mushrooms on log (2 ♂, 4 ♀, RWC, 2 ♂, LFC). Restigouche Co., Jacquet River Gorge P. N. A., 47.8201°N, 65.9992°W, 12.VIII.2010, R. P. Webster, black spruce/balsam fir/cedar forest near Belledune Bog, in gilled mushroom (1 ♂, RWC).

Collection and habitat data.

In New Brunswick, adults of Gyrophaena caseyi were collected during August and September from fresh gilled mushrooms and Pleurotus sp. on the side of a log. This species was found in a hardwood forest, a mixed forest, and a black spruce ( Picea mariana (Mill.) B.S.P.), balsam fir, and eastern white cedar ( Thuja occidentalis L.) forest.

Distribution in Canada and Alaska

. QC, NB ( Klimaszewski et al. 2009b).


Gyrophaena caseyi and Gyrophaena nanoides Seevers are very similar to each other externally and have similar genitalia. These two species were confused by Klimaszewski et al. (2009b), and specimens recorded from New Brunswick as Gyrophaena caseyi were Gyrophaena nanoides . This error and differences between these two species were pointed out by Klimaszewski et al. (2011). Specimens of Gyrophaena caseyi were found in New Brunswick since the publication of Klimaszewski et al. (2009b), and these represent a new provincial record. Collection data, habitat notes, and distributional maps are presented for both species.