130 MAINE AGRICULTURAL EXPERIMENT STATION. 



Perfect Insect (female).- — Length of wingless form less than one-tenth 

 inch ; body oval, pale yellowish green, often striped with deeper green ; 

 eyes and tail appendages black ; honey tubes green. The winged female 

 resembles the male in color. 



Life History. 



The eggs are deposited in the autumn in the cracks of the 

 bark of twigs and at the bases of the buds. The eggs hatch 

 when the buds begin to expand and the lice locate themselves on 

 the young buds and leaves by means of their beaks and feed 

 upon the juices. The spring brood is composed of females and 

 is about ten days reaching maturity. Each louse gives birth to 

 living young, producing about two a day for two or three weeks, 

 and then dies. These young become mothers in about ten days. 

 This process is continued through the season, there being many 

 generations, mostly wingless females, without the appearance 

 of males. Winged females are sometimes produced which, 

 migrating to other trees, spread the pest. Late in the season 

 males and females are produced in the same brood and, after 

 mating, eggs are laid to perpetuate the species, thus completing 

 the life history. 



Remedies. 



Wash the trees during winter or early spring with a strong 

 solution of soft soap, or of washing powder, to destroy the eggs. 

 Later in the season, if the aphids become numerous, spray with 

 kerosene emulsion or with a strong decoction of tobacco, made 

 by pouring i gallon of boiling water over a pound of tobacco 

 stems or leaves. 



There are many natural enemies of the aphis which should be 

 encouraged. Among these are seven or eight species of lady- 

 birds, and the larvse of syrphus flies and of chrysopa or lace 

 winged flies. 



THE RED-HUMPED APPLE TREE CATERPILLAR. CEdemOsia 



concinna, S. & A. 



This species is native to the United States and has been 



reported from several localities in Maine as doing considerable 



damage to the foliage of apple trees. It is said to be widely 



distributed in this country, but is not an abundant species. It 



