34 
MISCELLANEOUS COTTON INSECTS. 
Table Y 
-Transformation records of the salt-marsh caterpilh 
Place. 
Larva taken. 
Pupated. 
Days 
pupa. 
Moth emerged, 
June 18 
June 20, 27 
Julv2 
August 29 
October 18 
25 
14 
14 
August 22, unhealthy. 
July 16, 1904. 
September 12,1904. 
1904 
Do 
June 29 
Do 
Do 
October 8 
Do 
July 11 
14 
24 
July 26, 1904. 
November 8 to Janu- 
ary. 
College Station, Tex 
September 5, 1902. 
October 14-22 . . 
Cocoons, May 
29, 1885. 
Ercildoun, Pa. a 
July 17, 1893 
July 29 
Eggs laid August 
3.1893. 
Cocoons, March 
9, 1883. 
a From the records of the Bureau of Entomology. 
The notes concerning the cocoons from Paris, Tex., state that they 
were found by the million on cotton, and that the caterpillars were 
destroying- it and other green plants. As hibernated caterpillars of 
e c 
Fig. 18.— Estigmene acrsea: a, male moth; b, half-grown larva; c, mature larva, lateral view; d, 
head of same, front view; e, egg mass— all slightly enlarged, except d, more enlarged (from 
Chittenden). 
this family do not usually feed before pupating, these cocoons must 
have been those of the first spring generation. In this case there 
would probably be four generations in a season. The life history is 
exceedingly variable, as may be seen from the above records and by 
comparing them with those in Doctor Hinds' account. 
Mr. Newell observed in 1902 that Podisus spinosus DalL, which 
hatched from eggs taken in the field with the larva? of acrsea, attacked 
the young. larvae vigorously and would soon have destroyed all of 
them. 
