Nov., '05] ENTOMOLOGICAL NEWS. 287 



I have discovered no parasites. Mould, however, more than 

 makes up the deficiency of insect enemies, for it is very evident 

 that it reduces the number of larvae by one-half or more. The 

 9 lays an immense number of eggs but the family Hepialidse 

 is apparently an unsuccessful one for the imagos are always 

 comparatively scarce. In past years they were more plentiful, 

 but now the progress of civilization has wiped out many of the 

 favorite haunts of Hepialus sequoiohis so that at present it is a 

 rather rare insect. 



Descriptions of two new Hymenopterous Egg-parasites* 



By a. Arsene Girault, Washington, D. C. 

 Paracentrobia flavipes sp. nov. 



Female. — Length 0.81 mm. — Body bright yellow, the head a shade 

 deeper ; legs, venation, cheeks below the eyes, portions of the face, 

 pronotum, pleura and tegulas, and caudal margins of the abdominal seg- 

 ments, dilute black, forming a beautiful contrast to the yellow of the 

 body, the abdomen thus with five dusky rings. Articulations of the legs ; 

 the anterior tibise, and tarsi ; the basal two-thirds of the tibiae and the 

 tarsi of the intermediate legs ; the basal tibiae and the tarsi of the poster- 

 ior legs ; and the knees, pale yellow. Tips of the tarsi dark. Eyes and 

 ocelli deep red. the latter three in number, in a triangle on the vertex. 

 Submarginal vein paler. 



Head rounded slightly ; deeper in color than the body ; the vertex 

 much swollen, transversely striate, eyes ovate, coarse ; mandibles falcate, 

 tridentate at tips, the outer tooth slightly the largest ; in color, apical 

 half reddish brown, basal half pale. Thorax subconvex, shorter than 

 abdomen ; faintly longitudinally striate, the metanotum acute. Abdomen 

 cylindric oval, longer than thorax, the ovipositor visible, acute, pale yel- 

 lowish ; caudal segment of abdomen obliquely truncate. Wings short 

 and broad, marginal fringes short. The whole body with scattered stiff 

 hairs, arranged more regularly on the abdomen and antennae. 



Antennae sub-concolorous with thorax, a little dusky because hispid ; 

 y-jointed, scape, pedicel, ring-joint, i-jointed funicle, 3-jointed club. 

 Scape nearly as long as pedicel and funicle combined ; pedicel oval, 

 much shorter than the funicle joint ; the latter and basal joint of club sub- 

 equal, the funicle joint longer and cylindrical oval ; club inversely club- 

 shaped, its basal joint subhemispherical, the second much smaller, 

 obtusely conical, its apical joint still much smaller, narrower, acutely 

 conical. Basal joint of the club the broadest, the apical joint the narrow- 

 est of all the antennal joints. Ring-joint very flat, as broad as the base 

 of the funicle joint ; inconspicuous. 



From two specimens. 



