Allocapnia pechumani Ross & Ricker, 1964

Stark, Bill P. & Kondratieff, Boris C., 2012, Epiproct And Dorsal Process Structure In The Allocapnia Forbesi Frison, A. Pygmaea (Burmeister), And A. Rickeri Frison Species Groups (Plecoptera: Capniidae), And Inclusion Of A. Minima (Newport) In A New Species Group, Illiesia 8 (5), pp. 45-77 : 53

Allocapnia pechumani Ross & Ricker

( Figs. 31-36 )

Allocapnia pechumani Ross & Ricker 1964:88 .

Holotype ♂ (Illinois Natural History Survey), Otsquago Creek , Starkville, Herkimer Co., New York

Allocapnia pechumani: Ross & Ricker, 1971:36 .

Material examined. New York: Montgomery Co., tributary to Canajoharie Creek, Rt 10 near Smith Lane , 10 March 2012, B.C. Kondratieff, L. Myers, 15♂, 2♀ ( CSUC) . Schenectady Co., Normans Kill, Cole Rd , Duanesburg , 8 March 2009, L. Myers, 3♂ ( CSUC) .

Male epiproct. Apical segment of upper limb ca. 251 μm long, hastate in dorsal aspect; width across posterolateral projections ca. 208 μm; apical ca. 243 μm armed with patch of wave-like spikes ( Figs. 31- 33 ). Basal segment of upper limb ca. 511 μm long and ca. 200 μm wide at midlength; marginal areas of basal segment bearing sparse setal patch in apical half.

Male tergal process. Prominent raised structures on abdominal terga 7 and 8 ( Figs. 34-36 ). Process of tergum 7 ca. 79 μm wide and emarginate on dorsal margin; process of tergum 8 ca. 181 μm wide and bearing a shallow dorsal notch ca. 29 μm wide. Surfaces of both tergal processes covered with scalelike structures.

Figures

Figs. 31-36. Allocapnia pechumani, tributary Canajoharie Creek, Montgomery Co., New York. 31. Male terminalia, dorsal. 32. Apical segment upper limb of epiproct, dorsal. 33. Surface detail apical segment upper limb of epiproct, dorsal. 34. Epiproct and tergal processes, lateral. 35. Abdominal tergal processes, dorsal. 36. Abdominal tergal processes, anterodorsal.