Neoperla orissa, Stark & Sivec, 2015

Stark, Bill P. & Sivec, Ignac, 2015, New Species And Records Of Neoperla (Plecoptera: Perlidae) From India, Illiesia 11 (7), pp. 75-91 : 81

Neoperla orissa sp. n.

( Figs. 7-8 )

Material examined. Holotype ♂, INDIA: Orissa, Jeypore , 1775’ [ft. asl], September 1958, P.S. Nathan, ( USNM) . Paratypes, 2♂ ( USNM). Same collection data as holotype .

Adult habitus. General color yellow brown with limited darker markings. Most pigment pattern obscure due to specimen condition, but a dark spot occurs between ocelli and pale amber wings have slightly darker veins.

Male. Forewing length 8 mm. Hemitergal processes of tergum 10 slender and curved slightly laterad ( Fig. 7 ); tergum 9 with low, midlateral mounds sparsely covered with sensilla basiconica and a few long setae, median patch of sensilla basiconica absent; tergum 8 bearing a low median mound with a few sensilla basiconica, mostly hidden by process on tergum 7; tergum 7 with a slender, median projection which appears truncate in dorsal aspect but with small notch in apical aspect. Aedeagal tube sclerotized, slightly sinuate with apex curved ventrad; dorsoapical margin of tube bearing a patch of minute denticles ( Fig. 8 ); aedeagal sac slightly longer than tube and armed with minute spines in basal fourth, no obvious spines occur on the more distal region of the sac; spines arranged in multiple close-set rows which extend a short distance from tube apex; longest rows occur along dorsal and ventral sac margins ( Fig. 8 ).

Female. Unknown.

Egg. Unknown.

Larva. Unknown.

Etymology. The species name, based on the Indian state in which the specimens were collected, is used as a noun in apposition.

Diagnosis. This species is a member of the N. clymene species group and is generally similar in male genital features to N. ochracea but the aedeagal tube of that species bears a much more prominent dorsoapical patch of spines and the aedeagal sac is also more prominently armed than the new species. In addition, the process of tergum 7 is more slender in the new species.

Figures

Figs. 7-10. Neoperla adult structures. 7-8. N. orissa. 7. Male terminalia, dorsal. 8. Aedeagus, lateral. 9-10. N. schlitz. 9. Head and pronotum. 10. Vagina and receptacle.