Diploperla

Kondratieff, Boris C. & Verdone, Chris J., 2017, A New Species Of Diploperla Needham And Claassen (Plecoptera: Perlodidae) From North Carolina And Virginia, Illiesia 13 (13), pp. 127-139 : 133

Key to Diploperla Species Adults

1 Lobe on sternum 7 narrow rounded apically, female subgenital plate broadly rounded ( Fig. 7a ) ………………………………………………… 2

1’ Lobe on sternum 7 broadly rounded apically (as in fig. 8.90, Kondratieff 2004), female subgenital plate broadly rounded, truncate (figs. 8.91, 8.99, Kondratieff 2004) or emarginate (fig. 8.95, Kondratieff 2004) ……………………………….. 3

2 Dorsal head pattern as Fig. 2b ; body color pale brown to yellow ( Fig. 1b ); apex of male lateral stylets expanded ventrally, foot shaped ( Figs. 4b , 6b ); female subgenital plate broadly rounded ( Fig. 7b ). Distribution: AL, DE, GA, MD, MS, NC, PA, SC, TN, VA, WV ……………………………………….... D. duplicata

2’ Dorsal head pattern as Fig. 2a ; body color yellow to light brown with dark brown to black markings; apex of the lateral stylets expanded dorsally and ventrally ( Figs. 4a , 6a ); female subgenital plate broadly rounded ( Fig. 7a ). Distribution: NC, VA ………………….. D. janeae

3 Epiproct sclerotized, prominent, long and slender, in dorsal view (fig. 8.88, Kondratieff 2004); apex of lateral stylets acute (fig. 8.88, Kondratieff 2004); subgenital plate nearly parallel side, apical margin broadly rounded or truncate (fig. 8.91, Kondratieff 2004). Distribution: WV, VA, NC …… D. kanawholensis

3’ Epiproct reduced (figs. 8.93, 8.97, Kondratieff 2004); apex of lateral stylets 2-pronged (figs. 8.93, 8.94, Kondratieff 2004) or rounded to acute (figs. 8.97, 8.98, Kondratieff 2004); subgenital plate broadly rounded (fig. 8.99, Kondratieff 2004) or with sides evenly tapered, apical margin usually emarginated medially (fig. 8.95, Kondratieff 2004) ………………………………........................ 4

4 Apex of lateral stylets 2-pronged (figs. 8.93, 8.94, Kondratieff 2004); subgenital plate with sides evenly tapered, apical margin usually emarginated medially (fig. 8.95, Kondratieff 2004); Distribution: NC, VA ………... D. morgani

4’ Apex of lateral stylets rounded to acute (figs. 8.97, 8.98, Kondratieff 2004); subgenital plate broadly rounded (fig. 8.99, Kondratieff 2004); Distribution: AL, CT, IL, IN, KY, MD, OH, PA, TN, VA, WV …………………………... D. robusta

Figures

Figs. 7a–b. Female subgenital plate of Diploperla janeae sp. n., Helton Creek, Grayson Co., Virginia and D. duplicata, Little Rock Castle Creek, Patrick Co., Virginia, 5X. 7a. D. janeae sp. n, female subgenital plate. 7b. D. duplicata, female subgenital plate.

Figs. 2a–b. Adult head and pronotum of Diploperla janeae sp. n., Helton Creek, Grayson Co., Virginia and D. duplicata, Bull Run Mtn, Prince William Co., Virginia, 5X. Fig. 2a. D. janeae sp. n, head and pronotum, dorsal. Fig. 2b. D. duplicata, head and pronotum, dorsal.

Figs. 1a–b. Adult habitus of Diploperla janeae sp. n., Helton Creek, Grayson Co., Virginia and D. duplicata, Laurel Fork, Floyd Co., Virginia, 1.5X. Fig. 1a. D. janeae sp. n, habitus, dorsal. Fig. 1b. D. duplicata, habitus, dorsal.

Figs. 4a–b. Terminalia of Diploperla janeae sp. n., Helton Creek, Grayson Co., Virginia and D. duplicata, Little Rock Castle Creek, Patrick Co., Virginia, 5X. E. Epiproct, HL. Hemitergal lobe, LS. Lateral stylet. Fig. 4a. D. janeae sp. n, terminalia and lateral stylet, dorsal expansion (arrow), lateral. Fig. 4b. D. duplicata, terminalia, lateral.

Figs. 6a–b. Paraprocts of Diploperla janeae sp. n., Helton Creek, Grayson Co., Virginia and D. duplicata, Laurel Fork, Floyd Co., Virginia. Fig. 6a. D. janeae sp. n, paraprocts and dorsal expansion (arrow), lateral, 430X. Fig. 6b. D. duplicata, paraprocts, lateral, 200X.