SQUASH-BUG FAMILY. 83 
The adult insect is dirty dark brown above and mottled yellowish 
beneath. Those especially interested in the life-history of the 
insect should consult the above bulletin. The eggs, shown in 
another illustration, are beautiful objects; they are of a polished 
dark coppery or bronzy brown color. 
The insect has a number of enemies; but they are not suff- 
cient to keep it in check. In fact it is a difficult being to combat, 
as it is unusually resistant to all insecticides, particularly the 
adult. Mr. Chittenden advises the following methods: 
“Protection of young plants with coverings; repellents such 
as land plaster or gypsum saturated with kerosene or turpentine ; 
Fic. 75.—Nymphs of Anasa tristis DeG.: Fic. 75.—Egg of Anasa tristis DeG.: 
a, newly hatched; b, second stage; c, a, from below, showing point of 
third stage; d, fourth stage; e, fifth attachment; b, from side, show- 
stage—all about twice natural size. ing place of escape of nymph; c, 
After Chittenden, Div. of Entomology, sculpture of egg; d, egg cluster; 
Dep. of Agriculture. a, b, about five times enlarged; 
d, one-fourth enlarged; c, greatly 
enlarged. After Chittenden, Div. 
of Entomology, Dep. of Agricul- 
ture. 
planting an excess of seed to distribute attack; stimulating the 
growth of the plants by manure or other fertilizers, and lastly, clean 
cultural practice. If the precaution be observed of gathering the 
vines as soon as the crop is harvested and burning them, many 
bugs in their different stages will be destroyed and the crop 
of insects reduced for the ensuing year. 
“Other methods in general use against this species are hand- 
picking early in the season and the trapping of the bugs by 
means of boards, pieces of bark, or similar material, placed about 
on the ground in the garden. (Under such material the insects 
will find shelter during the winter). 
