INSECT PEST SUEVEY BULLETIN 
Uol, 21 Supplement to No* 9 NoveraLer 10, 194l 
A PRELIMINAEY- .CEECN LIST OP THE ENTOMOGFJOUS EUNGI OP NOETH AlffiEICA 
K 3j Yera K, Charles 
Associate mycologist. Division of Mycology and Disease Survey 
Bureau of Plmit ; industry 
■ United States Department, of Agriculture 
The fungi which parasitize or grow in association with many species of 
economic insects ha.ve long heeh a, subject; of. interest to entomologists. In- 
formation cpacerning' them, however, is widely scs,ttered and often a.ppears in 
periodicals or mj.'co logical works not readily accessible •' tu the x^^orking ento- 
mologist or- others' interested* It has seemed vrorth while,' therefore, to pre- 
pare this ; list as a, moans of pointing out the lauge numbers of fungi and in- 
sect hosts actually involved. h... 
It is ■recognized that the list cm be considered as' preliminary only, 
because there arc -undoubted!:/ many entomogenous fungi and their insect hosts 
as. yet- unreported or overlooked in the prepara^tioii of this paper. It is 
hoped that the list will awaken sufficient interest to stimulate entomolo- 
gists, mycologists, ' and collectors in general to report now fungi and nev; 
hosts, as well as further distributiona,!' records. Such assistance vdll be 
appreciated and vrill' serve to make, possible in the fixture a more complete 
and thereby more useful list, 
Thg d.a.ta presented here are ba.sed primarily on an indez of entomogenous 
fungi which ha,s been maintained for many years a,s part of the Mycological 
Collections of the Bureau of Plant Industry, This index includes data .from 
the literature on the subject, including fungus lists and monogrn.phiG accounts, 
from correspondence and from hcrbariim specimens. Only the herbaria of the 
Bureau of Plmt Industry and the Smithsonian Institution have been worked 
over in this connection. Time and circumstances have not permitted work in 
other fungus herbaria, but it is hoped that available data from other insti- 
tutions can be obtained later on. The La.boulbeniacean, constituting a very 
large group of minute species, ha.ve not been considered because, although 
para.sitic on insects, they do not kill their hosts and are therefore not 
entomogenous fungi in the usua.l sense of the term. 
Geographically the list cavers the North American Continent, including 
the West Indies and the countries of Central America^,- which is essentially 
the area .included in Sej^nour’s "Host Index of the Pnngi of North America.," 
Except for the United States and Puerto Eico, however, ava.ila.blo data are 
decidedly fragmentary, but serve a.t lea.st to. point out how little is known 
on the subject and whore the gaps in our knov.'lcdge occur, . 
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