388 Bulletin 265. 



The adult. — In general appearance the adult re- 

 sembles the common Wheat Joint-worm. 



Female. — Length, 2.4 to 2. 7 mm.; abdomen, 1.2 tc 

 1.3 mm. 



Head and thorax densely umbilicate-punctate. 



General color black; face, cheeks and a ring around 



Fig. 97. — Man- gyeg light yellowish brown; sides of prothorax, 

 dible of larva of ^ r , ^ , ^i-j 



Seed-chalcis of Vir- lateral angle oi scapulae, mesopleurae and ventral side 



ginia Creeper of abdomen more or less suffused with brownish; pro- 



notum with two small brownish spots, sometimes obsolete. 



Head seen from above as wide as the thorax, concave behind, strongly 

 convex in front, a distinct frontal furrow present in which the front 

 ocellus is placed; seen from in front a little wider than high; the eyes 

 small and widely separated. Face with a system of fine ridges radiating 

 from the clypeus. 



Propodeum with a median longitudinal depression, broad and regularly 

 concave; propodeum on the sides rugose-reticulate, within the furrow 

 densely, finely and distinctly reticulate-punctate; anterior end of depres- 

 sion with two smooth submedian pits, posterior end with a semicircular 

 row of similar pits. Between this row and the insertion of the petiole 

 there is a transversely striate elevation. No median carina present 

 except between the two anterior pits. Color of propodeum black 

 except that in some specimens there is a testaceous streak on each side 

 of median depression. 



Antennae dusky, underside of scape yellowish; club and scape of about 

 equal length; pedicel short; funicle joints submoniliform, the first slightly 

 longer than the others; club elongate oval, obtusely pointed at tip, the 

 last two segments not separated by a distinct suture. Coxae black, 

 in some specimens more or less yellowish; rest of legs dull yellowish; 

 posterior femora with a black area on the outside; posterior tibiae more 

 or less infuscate. Wings hyaline; veins brownish. For relative length 

 of veins see PI. I, figs. 1,2. 



Abdomen seen from above pointed ovate ; segment 5 twice as long as 4, 

 its posterior margin broadly concave; segment 3 two-thirds as long as 4; 

 dorsum of abdomen black, the venter brownish, the amount of brownish 

 varying in different specimens; sometimes a band runs up on the side 

 of segment 5 so as to be visible from above; on segment 6 the brownish 

 on the anterior margin is nearly continuous across the dorsum; on 

 segment 7 the black is confined to a large basal triangular spot which 

 does not quite attain the tip. The abdomen is smooth and shining 

 with a very delicate hexagonal reticulation of impressed lines. The 



