KO. 2210. NEW REARED ICHNEUMON-FLIES— CUSHMAN. 465 



The entire scries was reared under Quaintance Nos. 11,423, 

 14010, 14014, and 14016 by Mr. E. J. Newcomer, of the Bureau of 

 Entomology, for whom the species is named. 



Genus CHAERETYMMA Foerster. 



Only one North American species has been referred to this genus. 

 This is C. ashmeadii Harrington. The new species described below 

 is not closely allied to asJimeadii and should, perhaps, not be placed 

 in the present genus, but it is rather closely alhed to anatorius Grav- 

 onhorst, which Schmiedeknecht refers to Chaeretymma. 



CHAERETYMMA MINUTA. new species. 



Female. — Length, 4.5 mm.; antennae, 3 mm.; ovipositor, 2 mm. 



Head swollen, polished, impunctate except minutely on face, tem- 

 ples rounded, sloping; malar space slightly longer than basal width 

 of mandible; cheeks shghtly convex; clypous broadly rounded at 

 the apex, with a transverse impression just before the apex; scapo 

 attenuate toward base, first joint scarcely twice as long as thick, the 

 joints decreasing gradually in length and increasing in thickness 

 toward apex. Thorax polished, nearly impunctate above, laterally 

 with pronotum striate, mesopleura punctate, metapleura granular; 

 propodeum granular above, irregularly striate behind, incompletely 

 areolated, the entire dorsal area bounded by the lateral and apical 

 carinae being noncarinate, apical carina rather prominent at upper 

 angles; nervellus broken very close to submediella. Abdomen equal 

 in length to head and thorax; first throe tergites granularly opaque 

 except at apices, their apices and remaining tergites polished; first 

 tergite about three times as wide at apex as at base, dorsal carinao 

 weakly developed at base, obsolete beyond middle; ovipositor very 

 nearly as long as abdomen. 



Black; mandibles, clypeus, palpi, and antennae piceous, the last 

 without a white annulus; legs testaceous, hind tibiae at apex and 

 their tarsi fuscous; wings hyaline, veins and stigma dark brown. 



Male. — Length, 6 mm.; antennae, 4 mm. 



Differs from female as follows: Antennae tapering, the joints less 

 distinct; tergites narrower, the first barely twice as wide at apex as at 

 base; antennae intensely black, the scape with a whitish spot below; 

 face except a triangular spot with its base at the antennae, whitish 

 as are also the cheeks, mandibles, palpi, tcgulae, and front coxae and 

 trochanters in front; hind tibiae and tarsi darker than in female; 

 hind coxae and trochanters with dark spot above. 



Host. — Ametasiegia glahrata (Fall6n). 



Type-locality. — Wenatchec, Washington. 



Type.— £2it. No. 20777, U.S.N.M. 



77403— Proc. N. M. vol. 53—17 30 



