June, '19] 



HARTZELL: PINE TUBE MOTH 



237 



vial. When examined two days later, nothing but the skin remained 

 and in its place appeared a larval parasite that seemed to be sucking 

 the juices from the remains of the host caterpillar. A second yina- 

 tubana larva introduced into the vial met with a similar fate. The 

 parasite pupated October 29, 1915. On November 3, the adult 

 appeared. Again on October 18, 1915, another caterpillar was found 

 with two parasitic larvae attached to the dorsum. October 22, one of 

 the parasites was observed feeding on the host. Only one of these 

 reached maturity. Both the adults referred to above were identified 

 by Mr. R. A. Cushman as Epiurus alboridus Cress. These larvae seem 

 to attack the host just before pupation. It is not uncommon to see 

 two or three eagerly devouring a sluggish caterpillar. 



On October 25, 1915, another larva was found attacking a caterpillar. 

 On the 29th of the same month a pupa unlike that of E. -pinatiibana 

 was found in the tube occupying the same relative position as the host 

 pupa normally assumes. It was necessary to open the tube and 

 remove the silk to assure one that it was not the pupa of the pine tube 

 moth. The parasite in question was identified by Mr. S. A. Rohwer 

 as Phytodietus pleuralis Cress. 



Identified by 



A. A. Girault 



R. A. Cushman 



S. A. Rohwer 

 R. A. Cushman 

 S. A. Rohwer 



R. A. Cushman 



S. A. Rohwer 



R. A. Cusliman 



