NEW SPECIES AND RECORDS OF NORTH AMER- 
ICAN HYDROPTILIDiE (TRICHOPTERA) 
By D. G. Denning 
University of Wyoming, Laramie, Wyoming 
At present approximately 115 species of Hydroptilidre 
have been recorded from North America north of Mexico. 
Because of the difficulty in collecting this group of 
Trichoptera, due primarily to their small size and seclu- 
sive habits, Mhe distribution of all the species is inade- 
quately known. Probably a large number of new species 
remain to be discovered. The bionomics of most of the 
species is unknown and many of the species are as yet 
known only from the male. 
A recent study of the Hydroptilidae in the University 
of Minnesota collection has resulted in the establishment 
of a number of very interesting new distributional rec- 
ords, as well as the recognition of several new species. 
Holotypes are deposited in the collection of the Univer- 
sity of Minnesota. 
I wish to express my appreciation to Dr. C. E. Mickel 
for making this collection available for study, and to Dr. 
Mickel, Dr. Granovsky, Mr. Kretzschmar, Mr. Wirth and 
others for collecting this material. 
Leucotrichia pictipes (Banks) 
This fairly common species has been recorded from 
swiftly flowing streams in most of the northern states 
from New York to Oregon. Minnesota: Pine Co., Snake 
River, May 28, 1935 (H. E. Milliron), 5 males. Anoka 
Co., July, 1939 (D. G. Denning), 1 male. Carlton Co., 
St. Louis River, Aug. 11, 1940 (D. G. Denning), 40 males, 
5 females. Cook Co., Temperance River, May 30, 1941 
(H. P. Nicholson), 1 male. Idaho : St. Anthony, June 28, 
1938 (H. S. Telford), 12 males, 8 females. 
Agraylea multipunctata Curtis 
This Holartic species is one of the most common 
Hydroptilidag in Minnesota. Available records indicate 
170 
