634 MISC. PUBLICATION 657, U. S. DEPT. OF AGRICULTURE 
members of the family, 
this paralysis lasts just 
long enough to permit 
deposition of the parasite 
egg, which is_ securely 
attached to the mole 
cricket’s body just back 
of a hind leg. Normally 
only one egg is placed on 
ahost. The mole cricket, 
upon recovering, reenters 
the soil, makes burrows, 
and acts in a more or less 
normal manner until 
killed by the developing 
larva. During the first 
four larval instars the 
parasite feeds on body 
juices obtained through 
an aperture in the body 
wall. Upon completion 
of this feeding, and just 
before molting, the 
fourth-instar larva kills 
the host. During the fifth 
and last stadium, the 
larva feeds on the muscu- 
lar parts of the host’s 
body. The cocoon is 
formed in the midst of 
the host’s remains, or not 
more than 1 or 2 inches 
away. The winter is 
spent in the cocoon stage. 
peooed 
. £ 
} 
SUPERFAMILY 
APOIDEA 
BEES 
Figure 195.—Leafhoppers stored in a piece of The bees constitute - 
rotten log by Crossocerus parkeri. very large group of in- 
sects, including not only 
the truly social honey bees and bumble bees, but also many solitary 
bees. It has been estimated that there are 20,000 different species of 
bees in the world and 2,500 species in North America. The bees differ 
from other nest-building hymenopterons in that most of them pro- 
vision their nests with pollen and honey, instead of animal food. 
Some, however, live as inquilines or parasites, laying their eggs in the 
cells of others, and their progeny feed on provisions stored by their 
hosts. They have a pronotum that does not extend back to the tegulae, 
and they have single-jointed trochanters, dilated or thickened hind 
tarsi, and plumose or feathery hairs on the head and thorax. The 
bees are, of course, extremely important from an economic standpoint, 
