34 



PHELIAIIXART EEPOET OX ALE ALE A WEEVIL. 



A NATIVE TRUE PARASITE. 



Only one specimen of a single species of a true parasite of the alfalfa 

 weevil has so far been found in America. This was described by 

 Mr. Viereck as JSnaplegimarpha phytonomi. It was found August 80. 

 1911. at Hoytsville. Utah, in the form of a cocooned pupa within the 

 cocoon of the alfalfa weevil. The specimen was picked up from the 

 surface of the ground in a badly infested alfalfa field and the adult 

 parasite reared. The adult emerged September 3. 



INTRODUCED PARASITE-. 



Several species of parasites were sent over from the vicinity of 

 Portici. Italy, by Mr. W. F. Fiske during April. May. and June. 1911. 



Fig. 15. — Anaphes sp., a mymarid egg parasite of the alfalfa "weevil: Adult male; female antenna above 



at right. Greatly enlarged. (Origin:. - 



The egg parasite- were obtained by collecting stems of alfalfa con- 

 taining eggs ! the alfalfa weevil, placing these in boxes | PL X. fig. 3). 

 and transporting them by cold storage on steamers bound for Xew 

 Y >rk. On arrival from Europe they were promptly forwarded by 

 refrigerator express to their destination. Salt Lake City. Utah, where 

 they were at once taken either to the laboratory at Salt Lake City 

 (PL XIII. %. 1) or to the laboratory at Murray PL XIII. fig. 



Parasites that attack the weevil after it has hatched and before it 

 has dt 1 to the adult were handled in much the same manner. 



The boxes in which they were consigned are shown in Plate X. figure 

 2. The time required to transport these boxes from Portici. Italy, 

 1 Salt Lake City, Utah, was from 16 to 21 days. 



