NO. 2197. NEW PARASITIC HY MEN OPT ERA— Q AH AN. 199 



This species is very close to parorgyiae Ashmead, but differs in 

 the parallel-sided fii'st tergite, the more strongly compressed apex 

 of the abdomen and the smooth hind coxae. 



Subfamily Cheloninae. 



CHELONUS PHTHORIMAEAE,' new species. 



Fe7nale.—L%ii^^ 3 mm. Antennae 16-jointed; head, thorax, and 

 abdomen finely rugose-punctate, opaque; the scutellum shmmg, 

 spai-sely punctate medially, its margins and apex with larger elon- 

 gate punctures; median posterior portion of the mesoscutum more 

 coarsely sculptured than elsewhere on the mesoscutum; propodeum 

 rugose 'with a subquadrate median dorsal area, the posterior face 

 bounded dorsally with a carina the lateral angles of which are pro- 

 duced into rather strong teeth and between these are two smaller 

 teeth, one at each lateral posterior angle of the median dorsal area; 

 first abscissa of radius a little longer than the second; radial cell 

 short; femora, and tibiae swollen, the posterior tarsi slender and 

 longer than their tibiae; abdomen shorter than the head and thorax. 

 Black; the femora and tibiae varying from black to reddish tes- 

 taceous; wings hyaline. 



.¥«Z6.— Similar to the female except for a large transverse fissure 



at the apex of the abdomen. , u f 



This species very closelv resembles shoshoneanorum Vierecli, but 

 differs by having the clypeus distinctly punctate though more or 

 less shining; the rugosities of the face less evidently transverse; the 

 inner orbits below the antennae with practically no striations paral- 

 lel to the eye margin; the parapsidal grooves less sharply defined 

 owing to the coarser sculpture of mesoscutum, the rugosities of the 

 abdomen assuming less the form of parallel lines, the abdomen 

 viewed from the side is more truncate at apex and the ventral con- 

 cavity of the abdomen extends nearly to its apex. 

 Type-locality.— Rocky Ford, Colorado. 

 Type.— Csit. No. 20376, U.S.N.M. 

 Eost.—Phthorimaea operculella. 



Three specimens from the type-locality reared by H. O. Marsh 

 from the potato tuber moth and recorded in the Bureau of Ento- 

 mology' under Chittenden No. 955. Paratypes also from Los Angeles 

 and Ventura, California, reared by J. E. Graf, from the same host 

 under Chittenden Nos. 2236 and 2126, respectively. Two specmiens 

 from San Diego, California, from the same host, without f urther data. 



iThls Bpecies^flgured under the name Ohelonua ahoehoneanorum. Bull. 427, U. S. 

 Dept. Agrlc, p. 40. figs. 29-30. 



