1976] Ashley, Tarter, & Watkins — Diploperla robusta 
317 
To determine longevity of D. robusta, several naiads with 
dark wing pads were placed in rearing cages. The average time 
any single adult lived was five to six days. 
A male and female adult were placed in a cage together to 
observe mating behavior. They both died before mating occurred. 
Reproductive behavior was reported in two other perlodid 
stoneflies by Minshall and Minshall (1966). Isoperla clio and 
Isogenus deeisus females apparently deposit their eggs direct- 
ly into the water in the form of packets by dipping the tip of the 
abdomen while in flight. 
References 
Ashley, D. L. 
1977. Low pH tolerance of the naiads of the stonefly Diploperla robusta 
Stark and Gaufin, under controlled conditions. Proc. W. Va. Acad. 
Sci. 49(1): 23. 
Claassen, P. W. 
1931. Plecoptera nymphs of America (north of Mexico). Thomas Say 
Found. Ent. Soc. Amer. 3: 1-199. 
Frison, T. H. 
1935. The stoneflies of Illinois. Bull. 111. Nat. Hist. Surv. 20(4): 275-471. 
1942. Studies of North American Plecoptera with special references to 
the fauna of Illinois. Bull. 111. Nat. Hist. Surv. 22(2): 235-355. 
Harden, P., and C. Mickel. 
1952. The stoneflies of Minnesota (Plecoptera). Univ. Minn. Agric. Exp. 
Sta. Tech. Bull. 201: 84 pp. 
Harper, P. P. 
1973. Emergence, reproduction, and growth of setipalpian Plecoptera in 
southern Ontario. Oikos 24: 94-107. 
Hissom, F. K.,and D. C. Tarter. 
1976. Taxonomy and distribution of nymphal Perlodidae of West Vir- 
ginia (Insecta: Plecoptera). J. Ga. Ent. Soc. 11(4): 317-323. 
Illies, J. 
1966. Katalog der rezenten Plecoptera. Das Tierreich, 82. Walter de 
Gruyter and Co., Berlin. 632 pp. 
Krebs, C. E..,and D. D. Teets, Jr. 
1913. West Virginia Geological Survey. County Reports (Cabell, Wayne 
and Lincoln Co.), p. 32. 
Miller, A. 
1939. The egg and early development of the stonefly Pteronareys proteus 
Newman. J. Morph. 64(3): 555-604. 
Minshall, G. W., and J. N. Minshall. 
1966. Notes on the life history and ecology of Isoperla clio (Newman) 
and Isogenus deeisus Walker (Plecoptera: Perlodidae). Amer. 
Midi. Nat. 76(2): 340-350. 
