506 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



11. APANTELES PARANTHRENIDIS, new species. 



Closely allied to megathymi, from which it differs in the abdomen 

 being very strongly compressed at apex, in the darker membranous 

 margins along the two basal abdominal tergites, in the ovipositor 

 being longer and more strongly curved at tip, and in the cocoons 

 not being imbedded in a mass of silk. 



Female. — Length, 3.8 mm. Face much broader than long, punc- 

 tate, but somewhat shining; vertex, temples, and cheeks coarsely 

 roughened and dull, strongly pilose; mesoscutum very closely punc- 

 tate; disk of scutellum large, distinctly longer than broad at base, 

 flat, practically impunctate and very shining; the polished area on 

 the lateral face of scutellum extending anteriorly almost to the base 

 of the disk; mesopleura punctate anteriorly, polished posteriorly, 

 with a smooth longitudinal depression ; propodeum rugoso-punctate, 

 mostly opaque, with a large, sharply-defined areola, which is not 

 clearly separated from a rather indistinct basal median area ; costulae 

 and lateral longitudinal carinae distinct; forewing with the met- 

 acarpus longer than the stigma ; radius much longer than transverse 

 cubitus, and uniting wdth the latter in a very slight curve ; nervellus 

 distinctly curved toward base of wing; posterior coxae somewhat 

 punctate above, shining ; posterior femora stout ; inner spur of poster- 

 ior tibiae distinctly longer than the outer, and almost half as long 

 as the metatarsus; abdomen about as long as the thorax, strongly 

 compressed at apex; first tergite slightly broader at apex than at 

 base, and at least one and one-half times as long as broad at apex, 

 rugose, with a large roughened median longitudinal depression on 

 the apical two-thirds; second tergite transverse, somewhat broader 

 at apex than at base, and more than four times as broad at apex as 

 long down the middle, smooth and polished, with only a few scat- 

 tered punctures; remainder of abdomen smooth and shining; 

 ovipositor prominently curved at tip, the sheaths longer than the 

 abdomen. Black ; tegulae transparent yellowish ; wings hyaline, the 

 stigma mostly colorless, with only the outline brown ; all coxae black ; 

 basal trochanters blackish; remainder of legs testaceous; ovipositor 

 sheaths black. 



Male. — Posterior femora more or less blackish along the edges and 

 at apex, also apex of posterior tibiae and most of posterior tarsi 

 dusky ; abdomen not so stout ; otherwise essentially as in the female. 



Cocoons. — Large, white, gregarious, but not imbedded in a mass 

 of silk ; they are formed in the burrows of the host. 



Type locality. — Los Angeles County, California. 



Type.— C^t. No. 22515, II.S.N.M. 



Host. — Paranthrene roMniae Hy. Edwards. 



Described from four female and four male specimens bred b}^ A. 

 Koebele, under Bureau of Entomology No. 132. 



