Descriptions of New Parasitic Hymenoptera. 



45 



in Ohio, covering the entire latitude of the State. It was 

 also reared at Oxford, Indiana, in 1884. Described in Insect 

 Life, Vol. I, p. 338, 1889. 



DESCRIPTIONS OF THIRTEEN NEW PARASITIC 

 HYMENOPTERA, BRED BY PROF. 

 F. M. WEBSTER. 



By William H. Ashmead. 



In this paper I continue descriptions of the interesting new 

 parasitic Hymenoptera, bred and discovered by Prof. F. M. 

 Webster in his entomological work, carried on at the Ohio 

 State Agricultural Experiment Station. Many of these are 

 of especial interest, not only from the fact that they destroy 

 some of the more destructive insect pests of the field and 

 garden, but as representing genera now for the first time 

 noticed to occur in our fauna. 



FAMILY CYXIPID^E. 

 Sub-family Euccelin.e. 

 Hexaplasta Forster. 



(1) Hexaplasta melanopa, sp. n. Male — Length, .65 mm. 

 Highly-polished black; knees and tarsi, reddish-brown ; wings 

 hyaline, pubescent, the venation light brown, the second 

 abscissa of radius about one-third longer than the first. An- 

 tennae, brown -black, 15 -jointed, longer than the body; 

 scape and pedicel united very little longer than the first joint 

 of flagellum, but stouter; first flagellar joint the longest, a 

 little narrowed toward base, about three and one-half times 

 as long as wide at apex, the following joints sub moniliform, 

 about twice as long as thick. Scutellum striated at sides, the 

 cup very small, elliptic, with a single fovea behind its middle. 



