SEEPHOID AND CHALCIDOID PARASITES OF THE HESSIAN" FLY 19 



combined ; first and second flagellar joints unequal ; first narrower than the 

 pedicel and longer than broad, about half as long as pedicel ; second about two 

 thirds as long as pedicel and about twice as long as broad ; third about equal 

 in width and length to second; fourth very slightly shorter than third and 

 equal to it in width ; fifth and sixth joints subequal, each very slightly longer 

 than the second and slightly thicker than the fourth; seventh flagellar joint 

 thicker than the preceding and about one and one third times as long as broad ; 

 apical joint ovate, about twice as long as broad and distinctly the longest of the 



as^S»§«*^ 



Figure 4. 



-Platygaster error Fitch : A, Adult female ; B, antenna of female ; G, antenna 

 of male. A, X 40. 



flagellar joints. Thorax ovoid, a little higher than broad, mostly smooth and 

 shining; pronotum polished, with very weak shagreening along the posterior 

 margin in front of the' mesoscutum ; mesoscutum faintly shagreened, the par- 

 apsidal grooves complete and distinct but not deeply impressed, nearly parallel ; 

 scutellum triangular, about as broad as long, not convex, smooth, and sparsely 

 hairy; transverse groove between scutellum and mesoscutum very delicately 

 impressed ; mesopleura perfectly smooth and bare ; metapleura also nearly 

 smooth but thickly covered with pale hairs; propodeum short, hairy, with a 

 narrow median groove between two parallel longitudinal carinae, the groove 

 bare. Wings veinless, the fore wing about one and two thirds times as long as 



