September, 1942 Frison: NortH AMERICAN PLECOPTERA 313 
NEw York.—Corp Brook: June 30, 1940, 
H. Dietrich, 12. 
NorTH CAROLINA.—BALsaM : April 24, 1938, 
Ross & Burks, 4 nymphs. CHEROKEE: June 
26, 1938, W. Stehr, 14. Diczsporo: April 
24, 1938, Ross & Burks, 1¢. HazeLwoop: April 
24, 1938, Ross & Burks, 12. NEWFOUND Gap, 
elevation 3,560 feet: May P28e61934" \T sary. 
Brisote, W269 <2 O°, SMOKEMONT, Oconaluftee 
Creek: May 238, 1934, 2L. Hy Prison. iO% 
nymphs. 
PENNSYLVANIA. — Monroe CouNTy, Mar- 
shall’s Creek: June 1, 1935, W. J. Harmer, 
DN SP eLoe? $62.) 19S" with® exuvia (reared). 
SWIFTWATER, Monroe County: 1928, F. R. 
Nevin, Lot 258, 1¢, 49. 
TENNESSEE.—CADES Cove: June 13, 1940, 
T. H. Frison et al., 22 with exuviae (reared), 
1g, nymphs. ELtKmonr: fork of Little Pigeon 
River, May 27, 1934, T. H. Frison, 1 nymph; 
pune-125 4935 H. H. Ross, 58, 59; Little 
River, June 12, Lear Frison ee cl) i 
Person, + |r. 1a + same except June 17, 11 
nymphs, 1 exuvia. GATLINBURG: Fighting 
Creek branch of Little Pigeon River, May BT. 
1934, I. H. Frison, 46, 32, nymphs, exuviae; 
Little Pigeon River, June 12, 1935, H. H. Ross, 
54,19, 19 with exuvia (reared) ; Le Conte 
eeek, Juner 13. 1938 IH? Prison’ & bet: 
Frison, Jr., 4 nymphs, 1 exuvia; same except 
June 14, 16 with exuvia (reared); same 
except June 16, 23, 19, 3 nymphs; May 14, 
1939, Frison & Ross, 8 nymphs; same except 
Le Conte Creek, 39, nymphs; same except 
Fighting Creek Gap, May 15,23, 19; June 
13, 1940, T. H. Frison ef al., nymphs; same 
except Pigeon River, June M20, oi 5 a eck 
nymphs; June 14, 1940, T. H. Frison ef al., a ene 
1g and 19 with exuviae (reared). 912: ¥9 SUBCENITAL ELATED 
pamie except June 16, 1% with exuvia 
(reared) ; same except hunéel Se i47 anda 
with exuviae (reared) ; same except June 20, 
12 with exuvia (reared) ; same except June 
25, 22 with exuviae (reared). MONTEACLE: 
April 26, 1938, Ross & Burks, 24 (compared 
with paratype). Great Smoky MounrTAINS 
NATIONAL PARK: Greenbrier Cove, 2,400 feet 
elevation, July 19, Loo wear C Coles] © 
Chimneys Camp Grounds, July 13, 1939, A. C, 
Sole, 14. 
VirGINIA.—Big Meadows, SHENANDOAH Na- ; 
TIONAL ParRK: April 20, 1938, Ross & Burks, ~ 
5 nymphs. 
NYMPHAL 
MANDIBLES 
NYMPHAL LABIUM 
“ADULT HEAD 
AND PRONOTUM 
i 
Q SUBGENITAL PLATE 
Isoperla patricia new species 
Mate. — Basic color light yellowish 
brown, with darker markings forming a eae 
distinct pattern on head and pronotum, GAEepdEAGUS AND 
S287; posterior half of mesothorax and ule 
metathorax dark brown; in life, and some- 
times in fresh material, the abdomen is 
colored vermilion. Legs, antennae and 
anal cerci pale yellowish brown. No gill 
remnants. 
Head slightly wider through compound 
eyes than width of pronotum; lateral and Sey, 
median ocelli forming an approximately Fig. 87.—Isoperla patricia. 
o' ABDOMINAL SEGMENTS 
