ART. 2S CHALCID FLIES NORTH OF MEXICO BALDUF 67 



erately prominent and rounded between eyes as seen from above, 

 hind edge of head scarcely convex, vertex moderately so ; ocellar area 

 finely punctate, malar space smooth, bare ; cheeks and temples semi- 

 smooth or feebly strigose, reticulate, face more coarsely reticulate; 

 pedicel almost a fourth as long as scape (not including radicle), 

 slightly longer than Fl, latter about a fifth longer than each of F2 

 to F5, these subequal in length, and each approximately one-fifth 

 longer than thick, club not thicker than flagellum and slightly 

 longer than F4 and F5 combined ; pronotum one-tenth narrower than 

 liead and almost as broad as mesonotum ; pronotum and mesonotum 

 uniformly and rather coarsely umbilicately punctate; anterior lat- 

 eral half of mesopleura minutely papillose, posterior half aciculate 

 and finely punctate; a row of 13 to 18 setae on submarginal vein, 

 more often about 15; propodeum coarsely and variously reticulate, 

 a broad U-shaped carina limiting groove in front, anterior third of 

 •groove smooth and polished, the rest crossed by several subparallel 

 and not quite uniformly spaced rugae; abdomen in part or mostly 

 polished, sometimes posterior portions finely granulose, region of 

 ovipositor sheath punctate and hairy. 



Male. — ^Length 1.2 to 3 mm., or in general a bit shorter than female 

 and somewhat slenderer, antennae and scrobe sometimes dusk}-, and 

 thorax at times slightly blacker than in female, but dimensions, 

 sculpture, and vestiture similar in both sexes ; pedicel slightly more 

 than twice as long as wide, not much longer than Fl, latter fully 

 twice as long as wide, F2 to F4 not equal, F2 twice as long as thick, 

 sometimes barely so, F3 and F4 alike but slightly less than half as 

 broad as long, these dimensions varying among individuals. 

 Type locality. — Claremont, Calif. (C. F. Baker). 

 Holotype. — Female, U.S.N.M. No. 20400, antennae and a hind 

 leg on a slide. 



Remarks. — Originally described from this holotype; redescribed 

 from the type, the type of covipressa Girault, and a series of both 

 sexes from various localities in California. D. compressa Girault 

 differs from suhimTnaculata only in being somewhat larger with a 

 few more setae on the submarginal vein, but no differences in dimen- 

 sions, sculpture, and general color pattern are present. Moreover, 

 the California specimens below that were reared from known gall 

 and oak hosts show a similar variation in size and vestiture, which 

 I take to be adequate evidence for placing compressa Girault in 

 synonymj^ The types of suh'nmnnculafa Girault and compresf<a 

 Girault were not reared. 



D. auhmmalis Girault also was described from a single specimen 

 from unknown hosts in California. It has a somewhat darker head 

 than subivimaculata, but the thorax is lighter, indicating that the 

 coloration of the former is abnormal. This type has the hind tibiae 



