SEEPHOID AND CHALCIDOID PARASITES OF THE HESSIAN FLY 59 



propodeum short, completely divided medially by the postscutellum, nearly 

 smooth dorsally, its lateral aspect faintly sculptured and hairy; mesopleura 

 weakly reticulated, nearly smooth. Wings well developed ; the fore wing usually 

 not quite reaching the apex of the abdomen, the costal cell and basal areas 

 ciliated about like the disk of wing ; a narrow area along the posterior margin 

 at base of wing comprising the obsolete median and anal cells bare, and an area 

 extending obliquely backward and inward from the union of submarginal and 

 marginal veins also nearly bare ; marginal cilia short ; stigmal vein slightly 

 shorter than postmarginal, the marginal vein about four times as long as post- 

 marginal ; hind wing rather narrow, weakly ciliated at base, more strongly so 

 from the basal spur to apex. Legs normal, the middle tarsi swollen basally but 

 without stout spines beneath ; middle tibiae also without conspicuous spines at 

 apex ; hind tibia apparently with a single spur. Abdomen usually a little longer 

 than head and thorax, boat shaped, distinctly sculptured all over, the first to 



Figure 13. — Calosota metallica Gahan : A, Adult female ; B, antenna of female ; C, 

 antenna of male. A, X 24. 



fifth tergites more or less emarginate medially at apex, the sixth slightly tri- 

 angularly produced ; ovipositor sheaths usually extending very slightly beyond 

 the apex of abdomen. Antennae shining black ; scape more or less metallic ; 

 head deep steel blue with the vertex slightly aeneous; thorax above and abdo- 

 men entirely metallic green ; underside of thorax and all legs bluish green ; 

 trochanters, knees, apices of all tibiae and all tarsi, except the apical joint, pale 

 yellow; wings hyaline. 



Male. — Antennal pedicel not quite so long as the combined ring joint and 

 first funicle joint ; sixth and seventh funicle joints subquadrate or very slightly 

 longer than broad ; club a little shorter than the three preceding funicle joints 

 combined, and not so broad as in female; abdomen a little shorter than head 

 and thorax together ; posterior margins of none of the tergites emarginate. 

 Otherwise the male is like the female except that the general color is a little 

 more highly metallic. 



Redescribed from the type specimens and the following additional 

 material : A male reared by Packard at Tres Pinos, Calif., May 23, 

 1918, from wheat stems infested by Phytophagra destructor; 1 female 

 reared at the same place by the same collector July 28, 1922, from the 



