228 
THE STUDY OF INSECTS. 
on the leaves of grape and of the Virginia creeper. An 
entire brood of these larvae will feed side by side on a 
single leaf while young. 
Harrisina texana (H. tex-a'na) occurs in the Southwest. 
It closely resembles the preceding; but is bluish black 
with a reddish orange prothorax. Harrisina coracina (H. 
cor-a-ci'na) also occurs in the Southwest. This species is 
entirely black. 
Superfamily Pyralidina (Pyr-a-li-di'na). 
The Pyralids ( Pyr'a-lids ). 
This superfamily includes moths of medium or small 
size ; but so large a proportion of the species are small that 
the superfamily is commonly classed with the two following 
as Microlepidoptera. 
The members of the different families included in this 
superfamily differ so greatly in appearance that it is not 
possible to give a gen¬ 
eral description that 
will serve to distinguish 
it. It is necessary to 
study structural char¬ 
acters to find evidences 
of a common bond, and 
here as in other groups 
we find the structure of 
the wings most useful 
for this purpose. 
As a rule there are 
three anal veins in the 
hind wings and two in the fore wings. In this respect this 
superfamily agrees with the preceding families and with the 
two following superfamilies. But in most cases the Pyralids 
can be recognized by the fact that the subcosta and radius of 
the hind wings are separate along the discal cell, but grown 
Fig. 270.—Wings of Nomophila noctuella. 
