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New York AGRICULTURAL EXPBRIMENT STATION. yy 
Ill. A MEALY-BUG ATTACKING QUINCE TREES. 
Dactylopius sp. 
Late in April of last season a quince twig infested with a 
species of Dactylopiws was brought into the laboratory. The 
bearer stated that the insect was first noticed about three weeks 
previous. On April 27, the orchard was examined. It is one of 
the largest bearing quince orchards in the vicinity of Geneva, 
and is situated in an exposed position on the west shore of 
Seneca Lake. Nearly all of the trees were infested, especially 
those along the north side, but none of them sufficiently to show 
injurious effects. 
Notes on life history and habits——On the date above given the 
mealy-bugs were crawling about on the small branches and twigs 
or had settled down in protected places in the angles or near the 
buds. Most of them were from one-third to two-thirds grown. 
A few adults were found under the loose bark of the trunk and 
large limbs, but no eggs. 
June 28, the orchard was again visited. “The twigs were 
infested about asin April. On this date however, large numbers 
of adults were found under the loose bark making cocoons and 
laying eggs. As arule they were in groups of from two to six 
or eight as shown at Plate XX XIX, Fig. 1. This picture is from 
a photograph from life showing the insects enlarged to about four 
times natural size. Some of them are partially covered by their 
cocoons. A few eggs are scattered about. From this date until 
the middle of August there was little change in the numbers. 
From the middle to the latter part of August there was a 
decided decrease in numbers. By the first of September very 
few were left on the twigs. Nearly all of those that remained 
sought shelter under the loose bark. By September 26, the num- 
bers had diminished materially. Those remaining were from 
half to two-thirds grown. <A few larvee were found. 
October 26, which was an unusually bright, warm day for that 
season of the year, the mealy-bugs were crawling about freely. 
