ay) 
Raisin moth catches, 1931-33.--D. F. Barnes of the dried fruit in- 
sect investigations, Fresno, Calif., reports: "A comparison of the 
catches of Ephestia figulilella Greg. for the three seasons in the Mus— 
cat vineyard and ina Black Mission orchard during comparable periods 
trapped each year shows a decrease in the Muscat vineyard of 33.9 per- 
cent, compared with 1931, but an increase of /4.9 percent, compared with 
1932, Similar decreases and increases were recorded from the Black 
Mission fig orchard. Careful sorting of the records indicatesthat this 
excess in 1933 over 1942 occurred late in the season with moths whose 
progeny will make up the overwintering brood, The quantity of figs 
which matured late in the season was large this fall; the weather was 
favorable for larval development to December 14; hence it seems reason— 
able to expect a heavy spring emergence from the fig orchards of the 
district. The information obtained during the past year concerning hi- 
bernation in the soil and infestation in early fruit makes it possible 
to interpret more accurately than in previous years, graphs prepared 
from data on the average catch per day. This year there appeared to. 
be two distinct peaks of spring emergence, each of which carries on 
throughout the season. The first of these occurred from May 19 to 50 
and probably represented larvae emerging from beneath the bark while the 
second occurred from June 23 to 30 and represented larvae overwinter— 
ing in the soil. The progeny of the first group appeared as adults 
from July 28 to August 8 ond again from October 6 to 13, but the adults 
from the second group reached a peak from September 1 to 15. The first 
group had practically 3 complete generations in 1933, while the second 
produced 2 and a partial third. The developmental period was approx- 
imately 70 days between the broods. In 1941 the developmental period 
appeared to range from 49 to 55 days and in 1932 from 49 to 59 days. 
It appears from the records that in 1931 there were 4 complete genera-— 
tions, in 1932 three and a partial fourth, and in 1933 two groups, one 
with three and one with two and a partial third generation. The per-— 
centage of females amoug the adults taken was 42.25." 
iIndian-meal..moth in stored raisins.~-Mr. Barnes also reports that . 
by December 18 Ephestia larvae seeking hibernation had practically ceased 
to crawl. "At a plant where raisins of the 1932 crop. were stored, the 
fruit was heavily infested with Plodia interpunctella Hbn. The fruit 
was piled in bins about 5 feet deep. Picking boxes filled with fruit 
had been used to make bin walls in an open storer¢e. The fruit in the 
bins had settled so that at least one tier of boxes was above the fruit. 
The writer collected 1,200 to 1,500 Plodia larvae from between the ends 
of the exposed boxes in about 2 hours. This is the heaviest Plodia in- 
os aie observed since I beran making raisin-storage observations in 
1940. 

