i Ip COMMON WHITE GRUBS. 
GRUBS LIKELY TO BE MISTAKEN FOR COMMON WHITE GRUBS. 
It is important that the grubs of May beetles should not be con- 
fused with similar but noninjurious grubs and with such other grubs 
as may be injurious but which, because of their different habits and 
life history, necessitate different methods for their control. Prob- 
ably the most universal mistake is the general belief that the common 
white grubs of the field and the white grubs found in manure heaps 
and rotten logs are identical. The grubs of May beetles are not 
known to breed in manure or refuse of any kind. The most common 
grubs found in manure are the immature forms of certain brown 
beetles? which, like the May beetles, frequent lights, and would 
doubtless be mistaken for the latter by an inexperienced person. 
Iria. 8.—A piece of sod overturned to show the white grubs underneath, Lancaster, 
Wis., 1912. (Original.) 
Another grub commonly mistaken for a grub of a May beetle is 
that of the southern green June beetle,? which has frequently been 
reported as injuring grass and other vegetation in localities south 
of latitude 39°, or even farther north along the Atlantic coast. The 
grub of the green June beetle seems to prefer soils more or less 
heavily fertilized with manures, and besides, entirely unlike the. 
common white grubs, it makes definite burrows which usually open 
at the surface and which it may inhabit continuously for longer or 
shorter periods of time. For this reason grubs of this species will come 
to the entrance of their burrows and even crawl out upon the ground 
1 Ligyrus gibbosus De G. and L. relictus Say. 
2 Allorhina nitida L. 
