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JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 9 



the food supply. Two lots of nymphs were kept under observation 

 in cages placed over squash plants in the field with the following results: 



Table Showing Length of Instars, Based on Record for First Individual 



Habits 



So far as observed the habits of this species are quite similar to those 

 of Ajiasa tristis and A. armigera. Indeed, nymphs and adults of 

 andresii and tristis are often found minghng together on the plants. 

 In 1915 adults were first noted in the field at Baton Rouge on May 26 

 and soon afterwards eggs were found on squash. The eggs are usually 

 deposited on the under surface of the leaves of the host plants, though 

 they may be placed on the upper surface or on other portions of the 

 plant above ground. They may even be laid on other vegetation or 

 on objects in the vicinity of the food plants. They are placed in 

 groups of varying size or even singly, fifty groups ranging in size from 

 two to fifty eggs giving an average of fifteen per cluster. The eggs are 

 arranged in no regular pattern and there is a tendency to place the 

 eggs farther apart than is usual in the case of tristis. 



Upon issuing from the eggs the nymphs cluster around the egg 

 shells for a time but later become more or less scattered, being usually 

 found on the under surfaces of the leaves, though they may also occur 

 on other parts of the plant or beneath dead leaves and rubbish nearby. 

 Oftentimes when the vines have been killed by the squash vine-borer 

 (Melittia satyriniformis Hiibn.), or from some other cause, the adults 

 and the nymphs gather on any fruit remaining in the field. 



The injury caused by the nymphs and adults is identical to that 

 due to the attacks of tristis. Portions of the leaves from which the 

 bugs have been extracting the juices wilt and later die, presenting the 

 appearance of having been injured by fire. 



