80 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.63. 



Type locality. — Los Angeles County, California. 



Type. — Cat. No. 2285, U.S.N. M. Type and allotype female selected. 



Redescribed from the type material in the ooUeotion of the United 

 States National Museum. This material consists of six females and 

 three males, reared, during April and May, from a Cecidomyid gall 

 on Atriplex canescens. One of the females is minus the head and 

 another the abdomen. 



45. PLATYGASTER ASYNAPTAE (Ashmead.) 



Polygnotus asynaptae Ashmead, Bull. 45, U. S. Nat. Mus., 1S93, p. .315. — Brues, 

 Bull. 22, Conn. Geol. Nat. Hist. Surv., 1916 (1917), p. 538. 



Female. — Length 1.7 mm. Head seen from above nearly three 

 times as wide as long through its middle; excavated behind, the 

 cheeks moderatel}^ full, rounded; occiput strongly transversely stri- 

 ate; cheeks finely shagreened behind, smooth in front and below; 

 vertex subacute, smooth anteriorly; striate posteriorly; interocellar 

 area practically unsculptured, shining; frons very finely aciculate, 



more strongly so toward the malar 

 space, where the aciculae are oblique; 

 a short, shallow, indistinct groove be- 

 low anterior ocellus; antennae short 

 but rather slender, the flagellum much 

 shorter than the thorax, gradually 

 incrassated toward tip, the joints 

 seven to nine, inclusive, distinctly but 

 S' only slightly longer than wide; ped- 



FiG. 9. -PLATYGASTER ASYNAPTAE (AsH- ic^l a little Icss thau twlco as long as 

 MEAD). Antennae. wide; third joint a little longer than 



wide, narrower than the fourth (which is narrower than the second, 

 two-thirds as long as the second and subequal in length and mdth 

 to the fifth, a little longer than wide); joint six as long as the fifth, 

 slightly wider, as long as the seventh but narrower; last joint as long 

 as the third and fourth united, blunt apically, as wide as the ninth; 

 thorax about twice as long as wide, highly convex dorsally, not com- 

 pressed, as wide across the tegulae as the head; pronotum finely sha- 

 greened over most of its surface, sparsely covered with short, ap- 

 pressed, white pubescence, the median area smooth, highly polished, 

 its sides straight ; mesonotum highly convex, shining, shagreened in 

 parts, with four areas of longitudinally placed rows of appressed pubes- 

 cence; anterior ridges obsolescent, converging posteriorly; notauli 

 distinct to the middle of the segment, meeting in a truncate lobe 

 posteriorly; lateral lobes posteriorly with a growth of long hairs pro- 

 jecting over the scutellar fovea; scutellum transverse, highly elevated, 

 somewhat flattened dorsally, with a narrow margin laterally, rather 

 thickly clothed with short silvery appressed pubescence; metapleurae 



