No. 2317. FIVE TRIBES OF ICHNEUMONINAE—ROHWER. 439 



Harrington ^ suggests that pulcher Ashmead is only a variety of 

 calidus Provancher and an examination of the types failed to show 

 any differences except in the color of the mesepisternum and this 

 character varies from black to rufous, so it is impossible to separate 

 the two. In females the scutellum may have a yellow spot or be 

 black, and in one specimen from Texas the abdomen is almost entirely 

 piceous. Davis' type differs in no way from the male of calidus. 



Male. — Length 8 mm. Face below with a few wrinkles, Black; 

 line on clypeus, inner orbits (interrupted medially), scape beneath, 

 spot on posterior orbits yellow; legs rufopiceous, apices of hind femora, 

 hind tibiae and tarsi, except white bases of tibae and basitarsi, piceous 

 black. 



Canada; Pennsylvania; Fredericktown, College Park, Jackson's, 

 Maryland; Texas (Belfrage); Cadet, ^Missouri; Try on. North Caro- 

 lina (Fiske). 



Hosts. — According to unpublished records in Branch of Forest In- 

 sects, Bureau of Etomology, this species is a parasite of (Jhrysobothris 

 femoratus and Leptostylus maculus in chestnut and probably a para- 

 site of Curius dentatus in juniper. 



Group BILETI. 



Group characters.— Facial quadrangle longer than wide; face rugose; 

 frons sparsely punctured; vertex and posterior orbits smooth, with 

 only a few punctures; postocellar line distinctly longer than the 

 ocellocular; antennae of male hairy; angles of pronotum prominent; 

 mesonotum punctured, more or less rugulose medially; propodeum 

 rather coarsely punctured, carinae not especially strong, angles toothed ; 

 median carinae more or less completely coalesced, so basal area is tri- 

 angular and separated from areola by a raised line; first tergite in 

 female about two and one-half times as long as apical mdth and with- 

 out carinae, in male about four times as long as apical Avidth and with 

 complete median carinae; second tergite in female with length and 

 apical width subequal or with the apical width slightly greater; ter- 

 gites punctured to striato-punctate; base of third tergite in male 

 without a lateral depressed area; nervulus interstitial to slightly 

 postfurcal; nervellus perpendicular, broken at the middle. Black; 

 legs with some white marks and sometimes the hind legs are partly 

 rufous; wings hyaline; antenna of female with a pale annulus. 



The two species recognized in this group are in habitus and structure 

 very similar and it may be with more material it will be necessary to 

 combine the two, or it may be desirable to divide the forms of rileyi. 



iCan. Ent., vol. 23, 1891, p. 135. 



