138 
THE ENTOMOLOGIST'S WEEKLY INTELLIGENCER. 
The Entomologist’s Weekly Intel- 
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TO CORRESPONDENTS. 
J. W., Hatfield. — Your insect is not 
Lepidopterous ; it belongs to an aberrant 
group of the Hemiptera, allied to Coccus; 
its name is Aleyrodes Chelidonii. Your 
mistake is very natural, as Linnaeus him- 
self described it as a moth. 
COMMUNICATIONS. 
Lepidoptera. 
Note on A. Dia and Euphrosyne . — 
“ M. Vandouar has published, in the 
‘ Annals of the Linnean Society of Paris,’ 
a very interesting memoir on the tor- 
pidity of the larvae of Argynnis Dia and 
Euphrosyne. Having got a female of 
Euphrosyne to lay in the course of May, 
he obtained a certain number of eggs, 
from which soon proceeded some small 
spiny caterpillars, which he fed with the 
sweet violet till the end of June. At this 
period they ceased to eat, and remained 
most of them in their torpor till the ap- 
proach of spring. Some few only awoke 
at the beginning of August, set to work 
eating with much avidity, changed their 
skin for the fourth and fifth time; and 
became perfect insects at the end of the 
same month. The same experiment 
made on the larvae of Dia gave the same 
result. This explains why the two 
Argynnis in question are so common in 
the spring, while one meets with so few 
in the month of August.” — Boisduval , 
Ilistoire des Insecies , Inlrod. p. 48. 
The above seems interesting, as justifying 
the appearance of A. Dia in September 
(its we are later here than in France), 
