REPORT OF THE STATE ENTOMOLOGIST 1907 A3 
tionally numerous in lawns that presented every appearance of 
being in excellent condition. The adult beetle is sometimes very 
abundant and destructive because of its devouring fruits such as 
apricots, peaches, figs, prunes, plums, apples and grapes. 
The June beetles have a number of natural enemies. One of the 
most important is probably the malodorous skunk, a mammal which, 
when left to itself, destroys countless numbers of the white grubs. 
Unfortunately, so far as the pest under consideration is concerned, 
this natural enemy is altogether too scarce. The racoon, the fox, 
moles and gophers are all credited with feeding upon these grubs. 
It is well known that the much maligned crow feeds upon the white 
grub and undoubtedly renders valuable services to the farmer in 
this way. Domestic fowls frequently follow the plow in search of 
these pests. 
This insect has a number of parasitic forms which prey upon it. 
There is a slender, jet-black, wasplike creature known as Tiphia 
inornata Say which is a particularly effective check. This little 
insect enters the ground, and following along the burrows of the 
erub, stings its prey and deposits its egg upon the helpless grub. 
Ancther common parasite of the white grub is Ophion 
Ditoveotatim Brulle; Protessor Morbes has succeeded in 
demonstrating the parasitic habits of Macrophthalma dis- 
juncta, a small Tachinid which he has reared from the larva. 
Sparnopolius fulvus Wied. is also a parasite of this pest, 
while Pyrgota undata is exceptionally interesting because of 
its being parasitic upon the adult beetles. 
There are several fungous diseases which are useful in destroying 
insects, and Professor Forbes has conducted some experiments with 
certain of these forms for the purpose of testing their value under 
American conditions. A number of grubs were destroyed, but 
further work is necessary before this method can be recommended 
for use under ordinary field conditions. A most interesting fungus 
known as Cordyceps ravenelii Berk. affects the white 
erub, growing from just behind its head and producing usually two 
long, greenish processes much resembling young seedlings; later 
these become brownish. Affected specimens attract notice because 
of their peculiar appearance. 
Remedial and preventive measures. White grubs are well known 
frequenters of grass lands, and it is obvious that considerable injury 
can be avoided by planting recently turned sod to some crop not 
likely to be damaged by these pests. Corn, for example, is much 
