26 
PLANT-BUGS INJURIOUS TO COTTON BOLLS. 
lateral margins of the thorax above and below, the basal third to 
two-thirds of the costal margins of the wing corium, and the tip of 
the ' scutellum varying in color in different specimens from pale 
yellow to bright crimson. In a series of 63 specimens collected at 
random the range in length was found to be from 12 to 16.5 mm. 
While in this species there was one of either sex measuring 16.5 
mm., the females in general are slightly larger than the males. 
Among 10 specimens of each sex collected at random in a cotton 
field, the average length was 15.1 mm. in the case of the females and 
14.1 mm. in the case of the males, the former ranging from 14 to 
16.5 mm., the latter from 13 to 14.5 mm. 
. Fig. 1.— The conchuela (Pentatoma ligata): a, Adult bug; b, egg-mass on leaves; 
c, egg just before emergence of nymph; d, egg at an earlier stage of development; 
e, egg from side showing exit hole at the top; /, egg closed, a, b, enlarged; c-f, 
greatly enlarged. (Author's illustration.) 
EGGS. 
(Text fig. 1; PI. V, fig. 1.) 
The writer has described the egg of this species in a previous 
report. From the examination of 25 eggs deposited by various 
females the dimensions may be stated as follows: The greatest 
diameter of individual eggs varies from 0.95 to 1.22 mm., rarely 
exceeds 1.1 mm., and averages about 0.98 mm.; the height varies 
from 1.2 to 1.45 mm. and averages about 1.28 mm. The egg is 
irregularly ovoid in form. When first deposited it is pale green but 
the chorion soon turns white except for certain areas which are 
translucent and grayish in color, turning to dark gray or brown as 
the embryo develops. 
