INDEX. 107 
Pentatoma ligata, hibernation 53 54 
history 23 24 
increase and decrease in numbers during the season 
incubatioD period of eggB, a- related to temperature 35 37 
individual capabilities of destructiveness 55 57 
invertebrate enemies attacking adults 66 
eggs 64 65 
nymphs 
life history 29-41 
methods of study 29 
longevity of adults collected in the field 32-33 
reared to maturity in the laboratory 33-34 
when deprived of food 34-35 
nymphs without food 40-41 
method of attack of adults in feeding 4<i-47 
miscellaneous observations on feeding habits of adults 47 
molting of nymphs 41 
nymphal stages, duration 39-41 
nymphs, description 27-28 
habits 41-43 
length of life without food 40-41 
life history 39-41 
molting 41 
on cotton bolls 12-13 
nature of in j ury 15 
oviposit ion. (See egg laying.) 
parasites attacking adults 64 
eggs 62-64 
nymphs 64 
period between maturity of adults and beginning of egg 
laying 29-30 
predar eous habits of adults, abnormal 47 
predatory enemies 64-67 
preventive measures 67-68 
proliferation of cotton bolls as result of attack 17-19 
proof of injury to COttOD bolls 19-20 
rate of deposition of individual eggs 44 
reproduction 30-32 
seasonal history 48 54 
sexo<. proportion 32 
temperature as related to activity of adults 35 
incubation of eggs 35-37 
monthly and daily rale oi oviposi- 
tion 30 
low. as affecting vitality of eggs 38 
sai/i, as a cotton insect, general account 7.; 7 [ 
association with I\ ntaioma ligata in the Held 47 
hand-picked in cotton field in Mexico 70 
increase and decrease in numbers during the season 50 52 
on alfalfa 73 
Sl rva=Eu9chistu& servus 7 1 
ulilcri? (Sec Plant-bug. Filler's green.) 
Pentatomid bugs of the genus Euschistus injurious to cotton bolls 74-7S 
