Allocapnia minima (Newport)

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 : 53-57

Allocapnia minima (Newport)

( Figs. 37-42 )

Perla minima Newport 1851:450 . Lectotype ♂ (British Museum of Natural History), St. Martins Falls , Albany River , Ontario, designation by Kimmins 1970

Capnella incisura Claassen 1924:45 . Holotype ♂ (Cornell University), Ithaca [Tompkins Co.], New York. syn. Ricker, 1938:136.

Material examined. New York: Clinton Co., Saranac River, Clayburg , Silver Lake Rd , 25 March 2005, L. Myers, 24♂, 2♀ ( CSUC). Hamilton Co. , Sacandaga River , Wells , jct. Rt 8- Rt 30, 43.4453 ° N, 74.2524 ° W, 12 March 2012, B.C. Kondratieff, L. Myers, 16♂, 3♀ ( CSUC). St. Lawrence Co. , St. Regis River , Rt 11, 14 March 2009, T. Mihuc, 8♂, 5♀ ( CSUC) .

Male epiproct. Apical segment of upper limb flattened in lateral aspect and ca. 198 μm long; apical ca. 31 μm armed with a series of appressed processes separated by narrow grooves and terminating in elongate, flattened spines ( Figs. 37-41 ), remainder of apical segment armed with widely separated long, thick setae; apical segment ca. 83-86 μm wide throughout length and bluntly rounded at tip. Basal segment of upper limb ca. 62 μm wide, without mesal longitudinal groove. Lower limb ca. 96 μm wide near apical spoon.

Male tergal process. Prominent thimble-shaped, undivided structure on tergum 8 slanted caudad and ca. 54 μm wide at tip; apex covered with scale- like structures ( Fig. 40-42 ).

Figures

Figs. 37-42. Allocapnia minima, Saranac River, Clinton Co., New York. 37. Male terminalia, dorsal. 38. Apical segment upper limb of epiproct tip, dorsal. 39. Surface detail apical segment upper limb of epiproct, dorsal. 40. Epiproct apex and 8th tergal process, lateral. 41. Epiproct apex, lateral. 42. 8th abdominal tergal process, dorsal.