ART. 21. NEW SPECIES OF ICHNEUMON-FLIES — CUSHMAN. 25 



From crassisculptus, in addition to the characters mentioned mider 

 that species, it differs principally in having the outer gonapophyses 

 m the male very long and conspicuous. 



UROSIGALPHUS ARMATUS Ashmead. 



In addition to the types, there are four females and one male of 

 this species in the National Collection, mostly associated with chest- 

 nut or chinquapin {Castanea dentata and Castanea pumila)^ three 

 of the females having been reared from Balaninus, probably pro- 

 hoscideus. 



As in harberi there is considerable variation in size, sculpture, and 

 length of ovipositor, the last, however, being always much longer 

 than the body. In the female it is also at once distinguishable from 

 its nearest relatives by the lack of apical abdominal tubercles, and 

 in the male by the long curved outer gonapophyses. 



Pierce ^^ writes that he has seen specimens of this species in the 

 National Museum from West Virginia reared from Conotrachelus. 

 but no such specimens are to be found either under this or any other 

 name. 



Chittenden^* writes that this species attacks all of the common 

 species of Balaninus. Most of the specimens on which this state- 

 ment is based, however, have been examined and with one exception 

 prove to be harheri Crawford. 



UROSIGALPHUS FEMORATUS Crawford. 



Additional specimens are from Washington, District of Columbia ; 

 Cedar Point, Maryland; Southern Illinois (Robertson); Onaga. 

 Kansas (Crevecoeur) ; and Victoria, Texas (J. D. Mitchell). The 

 Washington specimen was reared under Hunter No. 1334 as a para- 

 site of Tyloderma foveolafum in the stem of evening primrose. 



UROSIGALPHUS NEOMEXICANUS Crawford. 



There is an additional female from the type locality and also a 

 male taken at Dallas, Texas, on Salvia lanceolata., by F. C. Bishopp. 



UROSIGALPHUS OTIDOCEPHALI, new species. 



Runs in Crawford's key ^^ to huhhardi Crawford, agreeing in all 

 the key characters except size. 



Male. — Length, 3 mm. Head shining, sparsely punctate, most dis- 

 tinctly so on vertex; frons with a median groove which extends 

 downward well beyond antennae and ends in a small pit ; vertex be- 



^ Journ. Econ. Ent., vol. 1, 1908, p. 386. 

 "Bur. Ent. Bull. 44, 1904, p. 33. 

 '6 Ins. Ins. Mens., vol. 2, 1914, p. 22. 



