204 
IOWA ACADEMY OP SCIENCES. 
Observations on these berries would favor the conclusion 
that the larvae develop within a single berry, no injured berries 
being found which did not contain pupae. However, two ber- 
ries were found with an opening on the side and containing 
well developed larvae with very little of the inside of the berry 
devoured, suggesting that the larv«, under exceptional condi- 
tions migrate from a berry of insufficient food material to a 
fresh one. 
But very few larvae were found and these during the last 
week in September. They were at that time mature and 
apparently ready to pupate; so of the early molts and even of 
the full grown larvm we cannot give a satisfactory description. 
Those observed vrere rather contracted, spindle-shaped, whitish, 
with a reddish-brown head, sparsely haired. 
Pupation occurs during last two weeks of August and is in 
nearly all cases completed by the last of the month. 
The pupae are dark brown, six mm. long, and no distinctive 
characters that would separate them from related species were 
detected. The cocoon is thin but of tough, close woven silk. 
In forming the cocoon the larva attaches itself to the blossom 
end of the berry by means of the caudal prolegs and then 
builds the cocoon which practically fills the cavity of the 
shriveled berry. 
Fig. 1. (GelecMa sp.) a, injured berries, b, moth, c, mature 
larva, d, pupa, e, parasite Centeterus suturalis. 
Moths first appeared October 3d, so the period of pupation 
may be stated as from two to three weeks. 
The moth shown at 6 in Pig. 1 is of a gray color with darker 
spots on the wings. It closely resembles G. quercifoliella. 
