168 PARASITES OF GIPSY AND BROWN-TAIL MOTHS. 
Accordingly, in order that at least a rough idea of the quantity of 
material handled at the laboratory may be had, Table VII, which, 
without being absolutely accurate, is very approximately so, has 
been prepared by Mr. R. Wooldridge, an assistant at the laboratory. 
TaBLE VII.—Table showing number of boxes received at the laboratory since beginning 
of work. 
| 
1905 1906 1907 1908 1909 | 1910 
Porthetria dispar egg masses....-.----------- DOKESE alee eae 1 1 18 32 1 
Porthetria dispar larve and pup2..-.--------- do. -: ; 131 923 | 1,539 307 | 8,391 5, 956 
Euproctis chrysorrhoea egg masseS--.-..------- (6a need eget Meee 46 87 17 1 0 
Euproctis chrysorrhoea webs....-.--.-------- WeEDS#=|2e ens oe 117, 259 | 55,082 | 32,830 | 29,295 | 29,696 
Euproctis chrysorrhcea larve and pupe...-..- boxes. | ee Ne 313) 59 ISO a Gy 381 
Apanteles fulvipes and Apanteles lacteicolor..do....|..--.-- Fees ae rl eee 13 21 63 
LOCALITIES FROM WHICH THE PARASITE MATERIAL HAS BEEN 
RECEIVED. 
Mr. Wooldridge has also prepared the accompanying map (fig. 11) 
showing the various localities from which parasite material has been 
received each year from 1905 to 1910, inclusive. It will indicate 
the thoroughness with which the more accessible parts of the world 
have been searched for parasites of these pests. 
THE EGG PARASITES OF THE GIPSY MOTH. 
ANASTATUS BIFASCIATUS FoNsSc. 
The first individuals of this species (fig. 12, female) were reared 
at the laboratory in the spring of 1908 from eggs imported the pre- 
vious winter from Europe and Japan. The dissimilar sexes were not 
immediately recognized as of the same species, and for a few days 
there was some doubt as to whether one, two, or four were represented 
among the few scattering specimens emerging. The number was 
soon reduced to two through the obvious attraction between the 
sexes, and soon after to the one, when the senior author had an 
opportunity to examine and compare series from Kuropean and 
Japanese sources. 
Their issuance had been anticipated a long time before, and a 
quantity of gipsy-moth eggs had been collected in the summer, 
before embryonic development had progressed beyond its initial 
stages, and placed in cold storage. It was thought possible that 
some species of parasite might be reared from imported eggs during 
the fall or winter which habitually and necessarily oviposited in unde- 
veloped eggs, and it was hoped that those collected in the summer 
might be kept fresh enough to serve as host material for laboratory 
reproduction. 
wa ee ee 
st a 
—_— | ee EEE eee ee 
a 
ey: a 
