THE GENUS NEOHERMES (MEGALOPTERA: 
CORYDAL1IDAE)* 
By Oliver S. Flint, Jr. 
Smithsonian Institution, Washington, D. C. 
Neohermes was erected in 1908 by Nathan Banks for several 
American species then placed in Chauliodes. The only comprehensive 
treatment of the genus is that of Weele (1910), who in his mono- 
graphic revision of the Megaloptera synonymized all the names 
available for the North American members of the genus. Recently, 
I happened to compare the genitalia of eastern and western specimens 
of Neohermes and it was immediately obvious that they were differ- 
ent. After careful study of much more material I am able to recognize 
five species in the genus. 
I wish to thank the following who generously loaned specimens 
and provided other valuable information: Mr. D. E. Kimmins, 
British Museum (Natural History), London, England; Dr. Ellis 
G. MacLeod, Harvard University, Cambridge, Massachusetts; Dr. 
J. G. Franclemont and Dr. L. L. Pechuman, Cornell University, 
Ithaca, New York; Dr. Lewis P. Kelsey, University of Delaware, 
Newark, Delaware; Dr. Paul H. Arnaud, Jr., California Academy 
of Sciences, San Francisco, California; and Dr. Jerry A. Powell. 
University of California, Berkeley, California. 
Neohermes Banks 
Banks, 1908, Proc. Ent. Soc. Wash. 10: 29. Weele, 1909. Notes Leyden Mus. 
30: 258; 1910, Coll. Zool. Selys 5 (1): 52. Munroe, 1951, Canad. Ent. 83: 
33-35 ; 1953, Canad. Ent. 85: 190-192. Kimmins, 1954, Bull. Brit. Mus., 
Ent. 3 : 418-419. Chandler, 1956, Aquatic Ins. Calif. : 232. 
Male with moniliform antennae, about three-fourths as long as 
fore wings, each segment bearing a whorl of bristly setae; antennae 
of female subserrate, about one-half as long as forewings. Forewing 
with R 3 and R 4 fused for nearly half of their length, and generally 
with a crossvein beyond their separation ; anterior branch of 2A united 
with 1 A for a short distance. Hind wing with first branch of M 
forked apically. Wing membrane slightly grayish ; forewing and 
costal margin and apex of hindwing densely marked with black spots 
set at right angles to the veins ; forewing with a large black mark at 
the level of m-cu. Male genitalia with anal plate cylindrical, apex 
^'Manuscript received by the editor June 23, 1965 
255 
