AQUATIC INSECTS IN NEW YORK STATH 2701 
LIBELLULINAE 
Sympetrum corruptum Hagen 
Prof. T. D. A. Cockerell took this species in transformation 
at Tempe Ariz. on Salt river Mar. 30, 1902, and kindly sent me 
‘specimens which he has allowed me to describe herewith. He 
sent me also a single male with its cast nymphal skin labeled 
Las Vegas N. M., October 1901. Thus we have the life history 
of this species from the western end of its range, and, though 
coming from an unexpected quarter, it makes a very desirable 
addition to our knowledge of the fauna of the State. In New 
Fig.16 End ofabdomen of nymph of Sympetrum corruptum 
York State this species flies only in late summer and autumn 
(in early spring I have twice found a specimen that, I suppose, 
had hibernated); but in the southwest it flies throughout the 
greater part of the season. 
Nymph. Length 19mm, abdomen 11mm, hind femur 4.5mm; 
width of head 4.5mm, of abdomen 6mm. Body stout, little de- 
pressed, sparsely hairy on the rear of the head, the outer margins 
of the tibiae and the apex of the abdomen. Head much wider 
than long, with prominent eyes directed forward and almost 
angulate anterolaterally; sides sloping behind the eyes to the 
nearly straight hind margin, and scurfy hairy; top of head with 
six longitudinal, scurfy hairy lines behind the transverse suture, 
Dorsum of the thorax fuscous, divided by a narrow longitudi- 
‘nal, pale line; the sides with some ill defined fuscous markings; 
ilegs pale. 
