Gyrophaena caseyi Seevers, 1951 New Ontario Record Figs 31106-108Map 31

Material Examination.

CANADA: ON:Northumberland Co., Peter’s Woods PNR, 44°7'27"N, 78°2'21"W, forest, gilled mushrooms, 12.ix.2011, A. Brunke, 1 (DEBU).

Distribution.

Canada: ON, QC, NB; USA: MI, NC, NY, PA (Seevers 1951; Campbell and Davies 1991; Webster et al. 2012). Native.

Comments.

This species was erroneously reported from New Brunswick by Klimaszewski et al. (2009) based on misidentified specimens of Gyrophaena nanoides Seevers. Gyrophaena caseyi and Gyrophaena nanoides are very similar externally except that the former has antennomeres 5-10 distinctly transverse (elongate to quadrate in the latter) and antennomere 9 is approximately as long as 10 (longer in Gyrophaena nanoides). For a habitus image of Gyrophaena nanoides see Klimaszewski et al. (2009) (labeled as Gyrophaena caseyi). The median lobe of the aedeagus in lateral view is shaped slightly differently (Fig. 106 versus Fig. 39 in Klimaszewski et al. 2009 (as Gyrophaena caseyi)).