Clioperla clio (Newman 1839)

Isogenus clio Newman ( 1 839)
Isoperla clio: Frison (1935).
Clioperla clio: Szczytko and Stewart (1981).
Type locality. — Georgia.
Regional distribution. — Watersheds 1-126 (Table

Clioperla clio (Newman)
Dark pigment on head not a rectangular outline (Figs. 427-435, 437-439); abdominal terga with pigment contrast (Figs. 440-449) Isoperla Banks. . 5
4. Dark band across anterior margin of head continuous (Fig. 379); pronotum with narrow pale margin (Fig. 379)
H. crosbyi (Needham and Claassen)
Dark band across anterior margin of head broken into 2 spots (Fig. 380); pronotum with irregular, wide pale margin (Fig. 380) .... H. fugitans (Needham and Claassen)
5. Abdominal terga with transverse bands (Fig. 442, 443) 6
Abdominal terga with longitudinal bands, or dark blotches on terga give abdomen a striped appearance (Fig. 440, 441, 444-448). ... 7
6. Lacinia with two elongated teeth and very few accessory spines (Fig. 452); pale area anterior to median ocellus open (Fig. 438)
/. burksi Frison
Lacinia with two teeth and a row of several spines (Fig. 45 1 ); pale area anterior to median ocellus usually closed (Fig. 434
/. signata (Banks)
7 . Lacinia with 1 -2 short, blunt teeth (Fig. 458); abdominal sterna with paired spots (Fig. 436); abdominal terga with blotches near posterior
margin (Fig. 446) /. decepta Frison
Lacinia with 1-2 prominent teeth (Figs. 450, 452, 453, 454, 459); paired spots absent from abdominal sterna; abdominal terga with longitudinal bands (Figs. 440, 441, 444, 445, 447, 448) 8
8. Lacinia with 2 teeth, the second usually shorter than the first (in /. szczytkoi, second tooth barely visible) (Figs. 450, 454, 456, 457, 459) Lacinia with 1 tooth (Figs. 453, 455) 13
9. Abdominal terga with diagonal bands, pointing inward posteriorly (Fig. 444); lacinia with second tooth short, barely visible (Fig. 456)
/. szczytkoi Poulton and Stewart
Abdominal terga with straight bands (Figs. 441, 447, 448); lacinia with second tooth prominent (Figs. 450, 454, 457, 459) 10
10. Dark spots on abdominal terga absent, or limited to 2 laterally (Figs. 441, 449); dark bands on abdominal terga with narrow pale borders Dark spots present on abdominal terga (Figs. 447, 448); dark bands on abdominal terga with (Fig. 447) or without (Fig. 448) narrow pale borders, but ocellar triangle open or mostly pale (Figs. 427, 432, 433) 12
1 1 . Pale patches near anterolateral corners of head closed (Fig. 439); dark pigment present along pronotal suture (Fig. 439)
/. dicala Frison
Pale patches near anterolateral corners of head continuous with other pale areas (Fig. 428); dark pigment usually absent along pronotal suture /. coushatta Szczytko and Stewart
12. Dark pigment continuous between lateral ocelli and posterior margin of head (Fig. 427); ocellar triangle pale, closed (Fig. 427); dark
bands on abdominal terga without narrow pale borders (Fig. 448) Ibilineata (Say)
Dark pigment between lateral ocelli and posterior margin of head not continuous (Figs. 432, 433); ocellar triangle open, connected to other pale areas (Fig. 432, 433); dark bands on abdominal terga with narrow pale borders (Fig. 447 ) /. namata Frison
13. Median longitudinal dark bands of abdominal terga narrow (Fig. 440); lacinia broad, triangular, tooth as short as spinules (Fig. 453)
/. ouachita Stark and Stewart
Median longitudinal dark bands of abdominal terga wide (Fig. 445); lacinia narrow, tooth longer than spinules (Fig. 455)
/. mohri Frison
Clioperla clio (Newman)