SERPHOID AND CHALCIDOID PARASITES OF THE HESSIAN FLY 35 



closely joined; funicle and club clothed with moderately long hairs and with 

 some elongate sensoria which are most numerous on the club joints. Prono- 

 tum large, not twice as broad as long, subquadrate, with a short neck anteriorly ; 

 mesoscutum about as long as pronotum without the neck, about twice as broad 

 as long; parapsidal grooves complete; scutellum convex, a little longer than 

 mesoscutum and with exactly similar sculpture ; axillae broadly separated and 

 sculptured like scutellum ; propodeum strongly declivous, rugosely punctate, 

 longitudinally depressed medially and with a narrow, indistinctly margined and 

 weakly f oveolated median longitudinal groove at the bottom of the depression ; 

 metapleura sculptured like propodeum; mesopleura more finely punctate with 

 the mesepimeron more or less longitudinally aciculated above. Hind coxae 

 finely and closely punctate; hind tibiae with two spurs. Wings well de- 

 veloped; fore wings extending to apex of abdomen, only a little more than 

 twice as long as broad ; costal cell ciliated on the ventral side, the cilia densest 

 near the anterior margin; basal cell distinctly outlined by rows of hairs re- 

 presenting the obsolete median and basal veins, the disk of this cell with a 

 few scattered but conspicuous hairs ; the area behind the median vein bare and 

 another area just distad of the basal vein nearly bare ; rest of the wing evenly 

 ciliated; marginal cilia very short; marginal vein one third as long as sub- 

 marginal, one and one third times- postmarginaf ; stigmal vein about half as 

 long as marginal; submarginal vein with many erect bristles, about 14 to 17 

 in number. Abdomen about as long as thorax, ovate, somewhat compressed 

 from the sides, shortly petiolate ; petiole rugose, much broader than long, at- 

 tached at the lower margin of abdomen; first to third tergites (not counting 

 petiole) bare, polished dorsally, the second and third weakly reticulated later- 

 ally, the first mostly declivous, second and third subequal, the third attaining 

 about the middle of abdomen ; fourth tergite dorsally about as long as second 

 and third together, practically smooth and bare, laterally longer and more or 

 less distinctly reticulated ; tergites beyond the fourth short, finely reticulated 

 and hairy dorsally as well as laterally; apices of ovipositor sheaths shortly 

 exserted. Color dull black; scape, except apically above, ring joint, mandibles, 

 and all legs except their coxae, reddish testaceous ; wings hyaline, venation tes- 

 taceous ; apices of ovipositor sheaths yellowish ; vestiture of body mostly 

 silvery white in some lights. 



Male. — Length 1.6 to 2.3 mm. Antennae 10-jointed, longer than in female ; 

 scape slightly thickened, thickest a little beyond middle; pedicel longer than 

 broad; one small ring joint; funicle 5-jointed, the joints each abruptly nar- 

 rowed at apex into a distinct neck to which the following joint is attached: 

 first funicle joint the longest, 2% to. 3 times the length of pedicel, the thickened 

 portion clothed with long hairs which do not appear to be arranged in whorls; 

 second to fifth funicle joints successively decreasing a little in length, each 

 with two distinct whorls of long hairs, the fifth joint about two thirds as long 

 as the first; club about equal to scape in length, no thicker than the funicle, 

 consisting of two distinct joints which are not separated by a peduncle, each 

 joint clothed with hairs which are slightly shorter than those on funicle joints ; 

 funicle joints each with about four elongate sensoria, the club joints apparently 

 with six each. Abdomen shorter than thorax ; petiole long, extending a little 

 beyond the apices of hind coxae, finely punctate; segments beyond petiole 

 smooth; first tergite (not counting petiole) mostly declivous; second only 

 about half as long as third, which is the longest tergite ; fourth less than one 

 third the length of third; following tergites retracted into the fourth. Other 

 characters, including color, as in the female except that the scape is mostly 

 black and the median and the hind femora are more or less blackish with 

 their bases and apices testaceous. 



Described from 12 specimens (9 females and 3 males) including 

 the types. The 2 female specimens, which constitute the type series 

 of this species, are considerably larger than any of the other speci- 

 mens here considered to belong to it, but in other respects they seem 

 to agree perfectly. 



REVIEW OF LITERATURE 



Eurytoma phoebus was described by Girault from two female 

 specimens reared by C. N. Ainslie. The only other mention of the 

 species in literature appears to be one by Hill and Smith, who in- 



