72 MISC. PUBLICATION 17 4, U.S. DEPT. OF AGRICULTURE 



Holcueus cecidomyiae Ashmead (male), Psyche S: 137. 1897: Marchal, Ann. 

 Soc. Ent. France 66 : S3, 1897. 



Homoporus lumper Ashmead (not Juniper Xees). Psyche 8: 137. 1897; 

 MarchaL Ann. Soc. Ent. France 66: 83. 95, 1897 (spelled laniger). 



DESCRIPTION 



The female of Artkrolytus maeuMpenms may be distinguished 

 from other related parasites of the hessian fly. except Merisoporus 

 chaJcidipha.r/iis and Polyscelis mode sf us. by the distinct discal cloud 

 in the fore wing. It differs from the first-named species by having 

 the marginal vein not thickened, the antenna less slender and dis- 

 tinctly clavate. the funicle 6- jointed, the club 3- jointed and not acute 

 at apex, and the lateral folds and median carina of propodeum 

 well developed. The male antennae are similar to those of the 

 species of Sferis-us but are much longer than those of any of the 

 species in that genus except those of M. febrieulosu-s Girault. The 

 male is easily distinguished from Merisws, however, by the complete 

 lateral folds on the propodeum. It may be distinguished from 

 P. mod est us by the absence of a neck on propodeum as well as by 

 antennal and venational characters. 



Female. — Length 1.6 to 2.5 mm. Head transverse, a little broader than 

 thorax, viewed from above approximately three times as wide as thick antero- 

 posterior!^ at the middle, slightly convex in front and rather broadly but not 

 deeply concave behind, narrowing behind the eyes, the temples receding from 

 the eye margins and approximately one third as broad as the eyes : ocelli in 

 a low triangle, the postocellar line longer than ocellocular line, the latter about 

 equal to twice the diameter of an ocellus ; head, viewed from in front, broader 

 than high (about 30:25). the cheeks rounded, the malar space equal to ap- 

 proximately one third the eye height: antennal scrobe shallow: eyes moderately 

 large, ovate, bare: ciypeus weakly striated or finely reticulate-punctate with a 

 distinct tendency toward convergent striatum, its anterior margin slightly 

 sinuous : remainder of head with close deep reticulate-punctate sculpture, this 

 sculpture below antennae very slightly finer than on frons : vestiture of head 

 sparse and inconspicuous and of a dark color. (Mandibles and palpi not exam- 

 ined.) Antennae inserted below the middle but very slightly above the lower 

 extremities of eyes, slightly incrassated. 13-jointed : scape cylindrical and 

 slender, attaining the front ocellus : pedicel slender, a little more than twice 

 as long as broad : two ring joints small, transverse, subequal : funicle 6-jointed. 

 the first funicle joint narrower at base than at apex, longer than the pedicel and 

 ring joints combined and longest of the funicle joints : second also narrower 

 at base than at apex and about two thirds as long as the first ; third about 

 as long as broad : fourth and fifth subequal and each a little longer than broad : 

 sixth distinctly broader than long and rather closely joined to the club: club 

 short, ovate. 3-jointed. scarcely longer than the two preceding funicle joints 

 combined, the two basal joints broader than long, the apical joint small and 

 conical: funicle joints clothed with rather Ions, coarse, recumbent hairs, each 

 joint with a single series of elongate sensoria which are located on the apical 

 half of the segment : club joints also with one series of elongate sensoria 

 which extend nearly the whole length of the segments. Thorax a little more 

 than one and one half times as long as broad : prothorax with the dorsal aspect 

 strongly transverse, not margined anteriorly, a little narrower than the meso- 

 notum between tegulae. sculptured like the head and mesonotum : niesocutum 

 about three fifths as long as broad (15:25). closely reticulate-punctate, the 

 punctures on the posterior middle portion a little coarser than anteriorly and 

 laterally, the parapsidal grooves weakly impressed anteriorly, absent poste- 

 riorly: scntellnm a little shorter than mesoscutam and a little more finely 

 sculptured than middle of mesoseutum. but with its extreme apex more strongly 

 sculptured than the dorsum : axillae widely separated, sculptured like scntel- 

 lnm; propodeum approximately half as long a< scntellnm, without a neck, the 

 lateral folds and median carina well developed, spiracular sulci present but 

 not deeply impressed, the area between lateral folds strongly punctate, laterad 



