218 NEW YORK STATE MUSEUM 
Part 8 oe 
LIFE HISTORIES OF ODONATA 
SUBORDER ZYGOPTERA 
Damsel flies 
BY JAMES G. NEEDHAM 
The discussion of this suborder here is to be regarded as @ 
continuation of the study of the order from Museum bulletin 47, 
wherein the suborder Anisoptera was treated, and 62 life his- 
tories were detailed. Only the fauna of the State is discussed, 
and the bibliographic notes have here the same limited scope and 
purpose. No descriptions of imagos are given, but the reader 
is referred to well known descriptive catalogues, and it is hoped 
that the keys to imagos given herewith, together with the 
figures, may prove sufficient for the determination of our species. 
My purpose has been to make known the immature stages, and | 
to that end, nymphs of all the species whose life histories are 
known are newly described. 
In the suborder Zygoptera 38 species have been listed from 
New York State hitherto: 36 by Calvert! and two additional by 
Davis.» To this number we are able to add four species: | 
Lestes vigilax from Cold Spring Harbor L. I.; Enal- | 
lagma piscinarium and E. pollutum from Ithaca 
and Nehallennia gracilis from Saranac Inn. Of the 
42 species thus known from the State, we have reared 23, and 
describe herewith, in more or less detail, their nymphs. AI} 
these descriptions are new, and apparently the first that have | 
been written for our species though Hagen? has briefly stated — 
the group characters of our genera of Calopterygidae. Of these 
23, three are Calopterygidae, five are Lestinae and the remaining ~ 
15 are Agrioninae: and, fortunately, the nymphs of all our | 
genera are now known. 
1Thirty-five in his Odonata of New York State. N. Y. Ent. Soc. Jour. — 
3:39-48 and 5:91-96 and one in Ent. News. 12:326. ; 
“Preliminary List of the Dragon Flies of Staten Island. N. Y. Ent. Soc.. 
Jour, 6:195-98. 
8Essai d'un Synopsis des Larves des Calopterygines. ©. R. Ent. Soc. J 
Belg. 1880. 23:65-67. | 
