Stonefly Species Allocapnia frumi (Little Snowflies)

Source: Epiproct And Dorsal Process Structure In The Allocapnia Forbesi Frison, Allocapnia Pygmaea (Burmeister), And Allocapnia Rickeri Frison Species Groups (Plecoptera: Capniidae), And Inclusion Of Allocapnia Minima (Newport) In A New Species Group

Male epiproct. Apical segment of upper limb ca. 287 µm long, bearing a pair of dorsolateral ear-like projections and a dense median patch of wave-like spikes (Figs. 13 - 16). Median spike patch ca. 230 µm long and divided along entire length by narrow groove, spikes absent on ear-like projections and basal dorsolateral bulges (Fig. 14). Apical segment ca. 147 µm wide across ear-like projections, and narrowed to ca. 29 µm at apex (Fig. 14). Basal segment of upper limb ca. 280 µm long and ca. 100 µm wide for most of length; setation and dorsal longitudinal groove absent from basal segment. Lower limb ca. 200 µm wide proximal to apical spoon. Male tergal process. Prominent raised structures on abdominal terga 7 and 8 (Figs. 15, 17 - 18). Process of tergum 7 thin in lateral aspect, forming a triangular projection in anterodorsal aspect, covered over much of surface with scale-like structures (Figs. 17 - 18). Process of tergum 8 thin in lateral aspect (Fig. 15) and tapered to a slightly concave dorsal surface in anterodorsal aspect; dorsum of process covered with a narrow strip of scale-like structures; width of process ca. 176 µm.