462 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 53„ 



punctate toward apex; first tergite rather slender, twice as wide at 

 apex as at base, the spiracles protuberant, situated at about the apical 

 two-fifths ; ovipositor about one-third as long as abdomen. 



Head black with clypeus and mandibles reddish; antennae black, 

 with a few basal joints reddish piceous below and an incomplete white 

 annulus embracing the dorsal surface of flagellar joints five to nine. 

 Thorax ferruginous with a tendency to piceous above, especially on 

 pronotum and in the alar region; legs reddish testaceous, with a 

 tendency to piceous on the coxae, especially the front pair, front and 

 middle trochanters whitish, hind tibiae fuscous, with an indistinct 

 whitish basal annulus, their tarsi fuscous with the second joint entirely 

 and the first at base white; tegulae white; wings hyaline, veins 

 and stigma pale brown. Abdomen ferruginous with tergites beyond 

 fourth black and with an indication of the apical white spot character- 

 istic of the genus. 



Male. — Length, 5 mm.; antennae, 5 mm. 



Structurally but little different from the female ; antennae as long 

 as body, more uniform in diameter, slightly attenuate near apex, 

 articulation less distinct ; abdomen more slender throughout. Man- 

 dibles, clypeus, and an elongate spot in lower anterior orbits white; 

 antennae intense black except for pale lower surf ace of scape and the 

 white annulus, which is complete, but embraces only four segments 

 (ninth to thirteenth). Thorax black with scutellum, propodeum, and 

 part of mesopleura and metapleura ferruginous ; legs similarly though 

 more contrastingly colored, the white embracing both the second 

 and third hind tarsal joints. Abdomen without a trace of the white 

 apical spot, and with the fourth tergite partly blackish and the fifth 

 partly reddish. 



Host. — Polychrosis viteana Clemens. 



Type-locality. — North East, Pennsylvania. 



Type.—Cat. No. 20775, U.S.N.M. 



A considerable series of both sexes is at hand reared by the writer 

 and his associate, Mr. Dwight Isely, from pupae of the grape-berry 

 moth under Quaintance No. 11016. These show marked variations in 

 color. In the darkest female specimen (paratype a) the head and 

 thorax are entirely black, except for a slightly paler color about the 

 mouth, the hind coxae and trochanters are black, all the tergites 

 beyond the third are black and the first three are black at the base, 

 and the flagellar annulus embraces only four joints, but the hind 

 tibia and tarsi show almost no trace of the contrasting color pattern. 

 In paratype h both head and thorax, including even the mouth, are 

 black, but the abdomen and legs are as in the type. The palest 

 female specimen (paratype c) has head and thorax entirely red with 

 practically no trace of infuscation, but is otherwise very typical. 

 The other female paratypes show the encroachment of the dark color 

 in varying degrees. 



