Allocapnia ohioensis 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 : 60-63

Allocapnia ohioensis Ross & Ricker

( Figs. 61-66 )

Allocapnia ohioensis Ross & Ricker 1964:92 .

Holotype ♂ (Illinois Natural History Survey), tributary Hocking River, Coalville , [Summit Co.], Ohio

Allocapnia ohioensis: Ross & Ricker, 1971:46 .

Material examined. Kentucky: Fleming Co., Crane Creek, Hwy 32, 22 February 1998, R.F. Kirchner , 5♂ ( BPS) . West Virginia: Wayne Co., Long Branch Beech Fork, Beech Fork State Park , 20 January 1993, R.F. Kirchner , 3♂ ( CSUC) .

Male epiproct. Apical segment of upper limb ca. 316- 322 μm long, armed on apical ca. 155-172 μm with dense patch of wave-like spikes ( Figs. 61-63 ); apical segment ca. 120-148 μm wide at base, tapered to a bluntly rounded tip. Basal segment of upper limb ca. 421 μm long, and ca. 81-85 μm wide at midlength; basal segment with a shallow, median groove. Greatest width of lower limb ca. 222-233 μm; lower limb bearing sparse, marginal row of long setae in apical third.

Male tergal process. Prominent raised structures on abdominal terga 7 and 8 ( Figs. 64-66 ). Trilobed process of tergum 8 ca. 153-200 μm wide, and bearing a broad, shallow notch, interrupted by a low median projection. Lobes of process appear slender and angled slightly forward in lateral aspect; surfaces covered with scale-like structures; anterior face bearing a transverse groove. Process of tergum 7 weakly trilobed, ca. 103-160 μm wide, and covered with scale-like structures.

Figures

Figs. 61-66. Allocapnia ohioensis, Long Branch Creek, Wayne Co., West Virginia. 61. Male terminalia, dorsal. 62. Apical segment upper limb of epiproct tip, dorsal. 63. Male terminalia, lateral. 64. Abdominal tergal processes, lateral. 65. Abdominal tergal processes, anterodorsal. 66. 8th tergal process, dorsal.