ZEX1LLIA AXD ALLIED GENERA SELLERS 89 



marginal bristles that almost approach the macrochaetae in size, in 

 the female the marginal bristles not at all developed. 



Length 5 to 7 mm. 



Type locality. — Simcoe, Ontario. 



Distribution. — New Hampshire 1, Massachusetts 11, Connecticut 2, 

 New York 4, Michigan 3, Indiana 1, Illinois 1, Montana 1, Idaho 4, 

 Washington 1, Colorado 3, Arizona 1, New Mexico 2, Quebec 3, On- 

 tario 1. Published and unpublished records not duplicated above: 

 New York 9 (West) 1 (Aldrich), Ohio 1 (Huber and Neiswander), 

 Alberta 1 (Gibson). Coquillett lists New Hampshire 1, District of 

 Columbia, California 1, and Ontario 1. 



Type. — Male, Canadian National Museum. Paratypes (of caesar), 

 U.S.N.M. No. 25C94. The type of nigripalpis is in the University of 

 Kansas. 



Hosts. — Archips argyrospUa (Walker) '20, Archips fumiferana 

 (Clemens) 4. Archips semiferana (Walker) 3, Archips purpurana 

 (Clemens) 1, Archips parallela (Robinson) 1, Nygmia phaeorrhoea 

 (Donovan) l,Pyrausta nubilalis (Hiibner) 17, .P. penitalis (Grote) 9, 

 P. ainsliei (Heinrich) 2, Loxostege Qommixtalis (Walker) 2, Loxos- 

 tege sticficalis (Linnaeus) 1, Papaipema niteJa (Guenee) 1. Pub- 

 lished records not duplicated above: P. miMlalis (Huber and 

 Neiswander). 



Remarks. — The foregoing description is based on an examination of 

 the following material : 2 male paratypes, 1 female paratype, and 1 

 male reared from Archips argyrospUa, Simcoe, Ontario (Caesar) ; 7 

 males and 5 females reared from A. argyrospUa, Canyon City, Colo. 

 (Gill) ; 1 female ex .4. argyrospUa, Darby, Mont. (Regan) ; 1 female 

 ex J. argyrospila, Wenatchee, Wash. (Newcomer); 12 specimens 

 bearing Gypsy Moth Laboratory note numbers; 1 male ex Loxostege 

 sticficalis, Greeley, Colo. (Mallory) ; 1 male and 1 female ex L. com- 

 mixtalis, Fort Collins, Colo.; 9 males and 8 females ex Pyrausta nu- 

 bilalis (Corn Borer Laboratory) ; 5 males and 4 females ex P. penitalis 

 (Corn Borer Laboratory) ; 1 male and 1 female ex P. ainsliei (Corn 

 Borer Laboratory) ; 7 males and 9 females, collected specimens (Aid- 

 rich, Townsend, Piper, Walton, and Mosher). 



One male collected on Harvey Ranch, altitude 10,000 feet, Pecos 

 National Forest, August 16 (Townsend). A much darker species with 

 a bluish cast, the f rons bluish black. It is probably a distinct species. 



The material reared from Pyrausta, as characterized by the tawny 

 or brassy tinge to the parafrontals seems to be slightly different from 

 the material reared from Archips. On most of the characters, how- 

 ever, they appear to be very much alike. The description is based 

 mostly on the material secured from the various species of Archips. 



Adults, June to September; generations, probably two; hibernation, 

 as larva in most larva. 



