18 
INSECTS AND INSECTICIDES. 
annually, one late in June and another in August. The 
slug feeds on the lower as well as the upper surface ot 
the leaf, complete^ skeletonizing it. The last brood is 
especially injurious. 
Larvae of the butterflies Grapta interrogation's and 
Grapta progne feed on the foliage of the elm and native 
hop vine. 
Larvae of the forest tent caterpillar feeds on the foli¬ 
age of Populus angulata. 
The common elm aphis disfigures the foliage of that 
tree annually. 
The large caterpillar of Telea polyphemus , one of the 
silk worm moths, feeds on the apple and the elm in this 
locality. 
NOTES ON MISCELLANEOUS INSECTS. 
JRhyncites bieolor , a beetle with bright red body, black 
legs and sides, feeds upon roses and the raspberry in large 
numbers. The mature insect is sluggish, drops to the 
ground when disturbed ; hence is not difficult to destroy. 
Systena mitis, a leaf-eating beetle, has been destruc¬ 
tive to a variety of plants for two seasons. The potato, 
beet, bean and tomato were seriously injured. The beet 
and other Chenopodiacece suffered most. The beetle 
(Chrysomela exclamationis ) bears a general resemblance to 
the potato beetle, and is very numerous in the State, gen¬ 
erally feeding, however, on no useful plant, confining 
itself to the species of sunflower, so numerous on the 
plains. 
Collops nigrieeps , a beetle with reddish thorax and 
abdomen, feeds on the beet, but not in large numbers. 
Conotrachelas leucophaetus , a dark brown beetle resem¬ 
bling a dried bud, and a near relative of the plum weevil, 
feeds on the beet, but not in large numbers here. 
Selandria rubi , the raspberry saw fly, a four-winged 
hymenopterous insect, appears in this region early in 
