8 FARMERS’ BULLETIN 1747, 
the second one usually produces serious outbreaks of grasshoppers. 
Whether or not this be true, there is ample evidence to show that 
dry weather 
favors the 
successful 
hatching of 
the eggs and 
the- subse- 
quent devel- 
opment of 
these pests. 
On the other 
Vic. 10.—New Mexico long-winged grasshopper (Dissosteira longipen- hand, cool 
nis) : Adult female. About one-third enlarged. (H. E. Smith.) 
wet weather 
is unfavorable, and grasshoppers often die in great numbers from 
disease when such weather conditions prevail. 
LIFE HISTORIES AND DE- 
VELOPMENT OF GRASS- 
HOPPERS IN GENERAL. 
The life histories of the va- 
rious species of injurious 
grasshoppers are quite simi- 
lar in character. The eggs 
are usually deposited in the \ 
: z r4 ‘ Fig. 11.—WSac, or ‘‘ pod,’”’ of grasshopper eggs in 
soil, inclosed in sacs, Or the ground. Slightly enlarged. (Original.) 
“pods” (fig. 11), formed of 
« glutinous substance furnished by the female. The grasshopper 
thrusts her tail or abdomen, which is capable of considerable exten- 
sion, into the soil 
(fig. 12) and starts 
laying her eggs at 
the farther end of 
the tunnel thus 
formed, which is 
then filled with eggs 
and afterwards 
sealed. One grass- 
hopper sometimes 
deposits a great 
many eggs. In the 
semiarid portions of 
the country, where 
the soil frequently becomes baked and hardened by the sun, the 
eggs are often laid in great numbers in the crowns of plants such as 
Fic. 12.—Two-striped grasshopper laying her eggs. (Webster.) 
a 
