464 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 90 



1. MONODONTOMERUS DIANTHIDII, new species 



MajT- be distinguished, from all other species having the apex of 

 scutellum sculptured, by the distinct though verj^ shallow sculpturing 

 of the dorsum of the first tergite. 



Female. — Length 3.25 mm.; ovipositor 1 mm. General color 

 aenescent blackish; head dark metallic green, the face tinged with 

 cupreous; antenna! scape mostly testaceous but darker and more or 

 less tinged with metallic toward apex; flagellum brownish black; 

 propodeum tinged with greenish; all coxae and femora dark brownish 

 with metallic reflections; all tibiae and tarsi testaceous; wings hyaline 

 with only very faint indication of infuscation at stigmal vein; abdomen 

 bronzy black; ovipositor sheaths black with a paler stripe on ventral 

 margin extending from base to near apical one-fourth. 



Head uniformly shagreened, temples nearly transverse to the longi- 

 tudinal axis of body; eyes with very sparse, short pile; ocellociilar line 

 about equal to diameter of ocellus; malar space equal to approximately 

 one-third the eye height; malar groove complete and distinct; face 

 nearly flat; clypeus protruding very slightly beyond anterior margin 

 of head; mandibles with the two ventral teeth short and subequal. 

 Antennae inserted above lower extremities of eyes; scape not reaching 

 to anterior ocellus; pedicel barely longer than broad; ring joint 

 strongly transverse; first funicular joint about as long as broad, 

 following joints of funicle all a little broader than long; club not thicker 

 than funicle and about as long as two preceding joints combined. 



Thorax approximately twice as long as broad, rugulosely sculptured 

 on the dorsum, without obvious pits or punctures, the rugulae forming 

 irregularly shaped areas; scutellum longer than broad, distinctly 

 sculptured behind as well as before the transverse furrow and with 

 the punctate marginal groove continuous around apex; apex of scutel- 

 lum more strongly produced over postscutellum than usual; post- 

 scutellum smooth, with a delicate median carina; median depression 

 on propodeum triangular, the surface between this depression and 

 spiracular groove distinctly reticulately sculptured. Tooth on 

 posterior femur not slender, located at approximately the apical one- 

 fifth of femur. Anterior wing extending nearly to apex of ovi- 

 positor; submarginal, marginal, postmarginal, and stigmal veins in 

 approximately the proportions of 25, 10, 9, and 4, respectively. 



Abdomen about as long as thorax, slightly compressed, reticulately 

 sculptured; first tergite dorsally about as distinctly aciculately 

 sculptured as the other tergites and comprising a little more than one- 

 third length of abdomen; second tergite about one-fourth as long as 

 first; third nearly twice as long as second; fourth shorter than third 

 but longer than second; fifth and sixth very short, the sixth with the 

 spiracles sunk in unusually deep pits and bare except for four or five 



