Stonefly Species Allocapnia forbesi (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. 180 µm long, swollen at mid-length but not bearing ear-like lobes; median field of apical segment bearing a patch of wave-like spikes ca. 178 µm long and narrowly divided along entire length by groove (Figs. 7 - 10); greatest width of apical segment ca. 162 µm, narrowed to apical width of ca. 87 µm (Fig. 9). Basal segment of upper limb ca. 437 µm long and ca. 89 µm wide at narrowest point near mid-length (Fig. 8). Lateral areas of basal segment appearing bare; median area with longitudinal groove. Lower limb ca. 139 µm wide proximal to apical spoon. Male tergal process. Prominent raised structures on abdominal terga 7 and 8 (Figs. 7, 10 - 12). Process of tergum 7 somewhat conical, but broadly rounded on dorsum (Fig. 11); apex without scale-like structures. Process of tergum 8 broadly and deeply notched with lobes resting on a narrow, plateau-like structure (Figs. 8, 10, 12); dorsal outline of lobes subtriangular and covered over most of surface with scale-like structures; basal width of notch ca. 42 µm, dorsal width across lobes ca. 211 µm.