Genus Scytonotus 
3 
Columbia; and 4) along the Pacific Coast extending inland to 
the eastern slope of the Cascade Mountains from San Francisco 
Bay and the northern San Joaquin Valley, California, to Yakutat 
Bay, Alaska, including all major offshore islands in British Colum- 
bia and Alaska except the Queen Charlotte Archipelago. The eastern 
fauna was reviewed by Hoffman (1962 b), who recognized four spe- 
cies. One species was widespread throughout the region, S. granulatus 
(Say), and three were localized endemics in the southern Blue Ridge 
Province: S. australis and michauxi, both authored by Hoffman, and 
S. virginicus (Loomis). Material secured since that study shows that 
S. virginicus and michauxi are geographic races of a single species. 
As the former is the older name, michauxi is reduced to subspe- 
cific status. Consequently, there are only two endemic species in 
the Blue Ridge, S. virginicus and australis. Hoffman (19626, 1979) 
indicated that about seven poorly known species occur in the Rocky 
Mountains and the Pacific Northwest of the United States and 
Canada, as listed by Chamberlin and Hoffman (1958), but that in- 
adequate material precluded revision of the western fauna. With the 
collection of numerous samples of Scytonotus from the western United 
States and Canada in the past 30 years, a clarification of this 
fauna is now possible, and important new records are also available 
for the eastern congeners. This contribution therefore completes the 
study of Scytonotus and recognizes nine species, three in the east 
and six in the west. Acronyms of sources of preserved study mate- 
rial are as follows: 
AMNH — American Museum of Natural History, New York, New York 
ANSP — Academy of Natural Sciences, Philadelphia, Pennsylvania 
BMNH — British Museum (Natural History), London, England 
BYU — Monte L. Bean Life Science Museum, Brigham Young 
University, Provo, Utah 
CADFA — California Department of Food and Agriculture, Sacramento 
CAS — California Academy of Sciences, San Francisco 
CIS — California Insect Survey, University of California at Berkeley 
CMN — Canadian Museum of Nature, Ottawa, Ontario 
CNC — Centre for Land and Biological Resources Research, 
Agriculture Canada, Ottawa, Ontario 
DC — Natural Science Division, Dixie College, St. George, Utah 
EIL — Zoology Department, Eastern Illinois University, Charleston 
FMNH — Field Museum of Natural History, Chicago, Illinois 
FSCA — Florida State Collection of Arthropods, Gainesville 
GLFRS — Great Lakes Forestry Research Station, Sault Ste. Marie, 
Ontario, Canada 
