Feb. lo, 1919 Life History of Parasites of Brttchophagus funehris lyi 



EUTELUS BRUCHOPHAGI GAHAN 



Eutelus bruchophagi belongs to the superfamily Chalcidoidea, family 

 Pteromalidae, and subfamily Pteromalinae. 



This insect was first reared by the writer from alfalfa seeds infested by 

 Bruchophagus funehris, collected at Blackfoot, Aberdeen, and Caldwell, 

 Idaho, and from Nephi, Gunnison, Manti, and Salt Lake City, Utah, in 

 September, 1914, and from Susanville, California, on September 12, 1917. 



Mr. T. R. Chamberlin, of the Bureau of Entomology, reared males of 

 this species from alfalfa seeds 

 collected at Salt Lake City in 

 June, 1 914. 



Upon careful examination of 

 the infested seeds this species 

 was soon found to be parasitic 

 upon B. funehris. 



Specimens reared by the 

 writer at Nephi, Utah, were 

 described by Mr. A. B. Gahan, 

 of the Bureau of Entomology, 

 as a new species.^ 



HIBERNATION 



Fig. s. — Eutelus brucho- 

 phagi: Larva. 



Fig. 6. — Eutelus bruchophagi: 

 Pupa. 



Eutelus hruchophagi hiber- 

 nates in the larva stage within 

 the infested alfalfa seeds and 

 seed pods remaining on the 

 fields. The warm spring days hasten pupation, and a few weeks later the 

 newly formed adult gnaws an opening through the seed wall and makes 

 its escape. 



LARVA 



The lar\^a (fig. 5) is grublike in appearance and averages 1.5 mm. in 

 length. Its body is white with a glossy surface free from pubescence and 

 having a clouded appearance under the epidermis. The head is of 

 medium size and the eye lobes rather shallow. The setae on the eyes are 

 distinctly visible. The anal segment is bilobed and shows three very fine 

 setae. 



PUPA 



The pupa (fig. 6) is white when newly formed and after a few days 

 shows the eyes turning to salmon brown. It averages 1.5 mm. in length, 

 and turns black before changing to the adult stage. 



ADULT 



The adults (PI. 22, B) live for one or two months under favorable condi- 

 tions and locate, for oviposition, on the newly-forming seed pods of alfalfa 



'Gaham, a. B. op. cit., 1917, p. 2ia. 



