82 
PTILODEXIA HARPASA Walk. (==TrpraLis Desv. of Coquillett 
and authors) * 
This fly, first recorded as a white-grub parasite by the writer under 
the name tibialis (16), has a wide distribution, occurring, according to 
published records, in Nova Scotia and Ontario, Can.; and in New Hamp- 
a 
NEN 
Aa 
SED, 
Fic. 16. Ptilodexia harpasa Walk., male. 
shire, New Jersey, Minnesota, Texas, and New Mexico. We have 
reared it from Phyllophaga grubs collected by H. E. Smith at Chelsea, 
Vt., and by the writer at Austin, Tex. Smith writes that he has reared 
*Concerning the status of this species I quote the following note furnished 
by Dr. J. M. Aldrich: 
“This species has been frequently referred to as Ptilodexia tibialis Desvoidy. 
which is evidently different as its describer placed it in a genus characterized by 
a petiolate apical cell. Austen, in Annals and Magazine of Natural History, Vol. 
XTX, p. 344, reports from an examination of the type of harpasa that it is the same 
as tibialis. Since he evidently used the latter in the accepted but erroneous sense, his 
statement seems to justify the use of harpasa for the present species.” 
