NO. 20G5. THE BRACONID SUBFAMILY OPIJNAE—GAHAN. 89 



OPIUS STRIATIVENTRIS, new species. 

 Plate 35, fig. 12. 



Female. — Length 1.5 mm. Head strongly transverse and polished, 

 the face practically impimctate and with only a very slight median 

 ridge ; malar space hardly half as long as the width of a mandible at 

 base; clypeus about twice as broad as long down the middle; eyes 

 large and converging slightly below; a broad opening between man- 

 dibles and clypeus, the former small and just crossing at the tips; 

 oceU-ocular line equal to about twice the diameter of an ocellus; 

 posterior orbits receding and about half as wide as the eyes ; antennae 

 22-jointed in the type, the first flagellar joint about four times as long 

 as thick. Thorax distinctly broader between the wings than high 

 (dorso-ventraUy), the mesonotum flattened, smooth, the parapsidal 

 grooves indicated only anteriorly; mesopleurae smooth with an 

 impression below which is faintly rugulose within ; propodeum granu- 

 larly rugose; stigma of the forewing lanceolate, emitting the radius 

 near the basal one-third; first abscissa of radius shorter than the 

 width of stigma, second abscissa about one and one-half times the 

 first transverse cubitus, third abscissa fully two and one-half times 

 the second and attaining the wing margin very slightly above the 

 extreme wing apex. First abdominal tergite granularly rugulose, a 

 little longer than broad and wider at apex than at base; second and 

 third tergites granularly rugulose, the suturiform articulation deep 

 and distinct except toward the lateral margins; fourth tergite finely 

 striate; following tergites smooth; ovipositor projecting only slightly 

 beyond the apex of abdomen. General color reddish stramineous; 

 eyes black; spot surrounded by the ocelU, mesoscutum, and scutellum 

 piceus; antennal flagellum dark brown; hind tibiae and their tarsi 

 fuscous; wings hyaline, the stigma and veins brownish. 



Male. — Antennae 23-jointed in the type. Otherwise as in the 

 female. 



Type-locality. — United States. 



Type.— C&t. No. 19372, U.S.N.M. 



One female and two male specimens in the National Museum from 

 the Ashmead collection. The origin of these specimens is imknown. 



OPIUS SUTURALIS Gahan. 

 Opius suturalis Gahan, Can. Ent., vol. 45, 1913, p. 146. 



Since the original description of this species which was from a male, 

 a female has been received from Holtville, California, bred by V. L. 

 Wildermuth under Webster No. 6158. This female agrees with the 

 description of the male except that the rugulose sculpture on the 

 second tergite extends almost to the apex of the segment. The ovi- 

 positor scarcely extends beyond the apex of the abdomen. 



Hahitat. — Arizona and California. 



Host. — Agromysa pusilla. 



