ART. 28 CHALCID PLIES NORTH OF MEXICO BALDUF 69 



Auburn and San Jacinto Mountains, Andiicm laslus suUasius Kin- 

 sey; and Placerville, A. lasius lasius Ashmead. The rearing dates of 

 the gall makers fall between February 28 and March 30, 1920. 



The following were reared by L. H. Weld in California localities : 

 1 male from the gall of Disholcaspis tmckeensls (Ashmead), on Q. 

 chrysolefis; a pair (Hopk. U. S. 15613°), July 8 (male) and 15 

 (female), 1918, from the same species of oak and gall, Camp Baldy, 

 Calif., and a female (1732) from the gall of Andricus lasius lasius 

 Ashmead, at Los Gatos. The male of the above pair is distinctly 

 darker than the female. 



Two fine lots of typical suhim7naculata are at hand as follows: 

 8 females (Hopk. U. S. 15922f) reared by K. D. Hartman, May 21 

 and June 4 and 11, 1919, from galls of Callirhytis sp. (determined 

 Middleton) on Q. chrysolepis, at Los Gatos, Calif.; 15 females and 6 

 males (Hopk. U. S. 15605^) reared by L. H. Weld, July 8, 15, and 

 23 and November 6, 1919, at Camp Baldy, Calif., from galls of 

 Amiricus pomiformis maculipennis (Kieffer) on Q. wislizenii. 



27. DECATOMA PEZOMACHOIDES. new species 



Similar to D. subim??iaculaia Girault in color, but may be distin- 

 guished by its more robust form; it has 11 to 12 setae on the submar- 

 ginal vein, the head is very nearly to actually twice as wide as long, 

 and the face seen from above is only feebly rounded. 



Female. — Length 2.75 mm., form quite robust for the genus, color 

 predominantly golden yellow; head golden yellow, except slightly 

 around mouth, a small blotch contiguous with and scarcely larger 

 than each ocellus, and occiput narrowly, black; scape pale yellow, 

 pedicel same with basal upper third brown, flagellum uniformly pale 

 brownish j^ellow ; neck narrowly black, thorax yellow like head, except 

 a fragmentary dorso-median longitudinal band variable in size and 

 intensity on prescutum and extending forward under pronotum, and 

 lower hind edge of axillae narrowly, black, venter of thorax from 

 middle coxae to and including propodeum, more or less black; legs 

 bright honey yellow, tibiae approaching stramineous-yellow, tarsi 

 stramineous; pedicel black; an irregular dorso-median band usually 

 not extending full length of the abdomen. 



Head transversely subrectangulate-ovate, about twice as wide as 

 long, face from above protruding feebly in front of eyes and not 

 sharply set off from eyes, hind edge of head almost straight or feebly 

 concave, vertex moderately convex transversely; malar space behind 

 groove smooth, polished, cheelvs same or becoming semismooth above, 

 ocellar area finely punctate, occiput and hind portion of vertex in- 

 conspicuously sculptured, face moderately reticulate-punctate, and 

 sparsely hairy; pedicel twice as long as its greatest diameter, only 



