KO. 2219. A REVISION OF THE CREHASTINI—CUSIIMAN. 547 



otHcuioly transversely striate; propodcal carinao strong, areola 

 short* pentagonal about two-thirds as long as petiolar area, dis- 

 tinctly separated, apical areas strongly transversely niguloso, others 

 sparsely punctate; stigma shghtly more tlian half us broad as long, 

 radius arising far bcj-ond middle, its two abscissae forming nearly 

 a right angle; second discoidal cell about four times as wide at apex 

 as at base; nervellus slightly curved but unbroken, perpendicular; 

 legs fairly stout, hind basitarsus three-fifths as long as tibia and 

 nearly as long as remaining joints. Abdomen scarcely a half longer 

 than head and thorax, very weakly compressed at apex, tergites 1 

 and 2 together much longer than remaining segments united; first 

 tergite distinctly longer than second, not inclosing the sternite, its 

 ventral edges parallel, increasing in width from before middle, ])()st- 

 petiolo about three times as wide as petiole, not swollen, petiole 

 strongly carinato and foveato; second tergite about three-fifths ns 

 broad at base as long, its sides strongly divergent, shagrcened and 

 obscurely striate; ovipositor twice as long as first tergite. 



Black; clypeus, mandibles, orbits, except broad interruptions 

 above eyes and in lower anterior orbits, narrowly in front and broadly 

 below C3^es, yellow; antennae black throughout; tegulae and wing 

 bases yellow; legs generally reddish testaceous, front ones paler, hind 

 coxae black at base, front legs in front, all trochanters, middle and 

 bind tibiae above yellowish, hind tibiae otherwise and their tai-si 

 infuscate; wings hj^ahne, venation brown, stigma with a longitudinal 

 pale streak; tergites 1 and 2 black, others largely red with apical 

 middle more or loss yellow and inclining to black in l)asal middle, 

 the yellow increasing apically and the black basally. 



Male. — Length 7.5 mm., antennae 5 mm. Very like female, even 

 in size of ocelli, and differing principally in color as follows: Orbits 

 more broadly yellow and scarcely interrupted below, front and 

 middle coxae black at base, hind coxae pale only at extreme apex; 

 yellow color of abdomen confined to apex of seventh tergite and 

 lateral edges of others boj^ond second, the tergites largely black 

 except third and fourth, which are largely reddish. Hind tarsal 

 joints beyond first relatively longer. 



Host. — Gnorimoschema gallae-solidaginis (Riley). 



Type-locality. — East Falls Church, Virginia. 



Type.—Csit. No. 20278, U.S.N.M. 



Described from 11 females and 6 males reared by the writer during 

 the spring of 1916. 



In color this species is very variable, especially in that of the 

 abdomen. The female paratypes a-j show a gradual re])lacing of 

 the red by black, while paratype i has the yellow almost enfiri^ly 

 obsolete. In paratype / the three colore are beautifully arranged 

 in alternatinc: bands on tergites 3 to 6. Aside from color tho 



