66 U.S. NATIONAL MUSEUM BULLETIN 2 89 



Thorax: Fuscous, irrorated with white; majority of scales whitish 

 tipped; most of ventral surface grayish white, with a slight scattering 

 of darker gray scales. Pro- and mesothoracic legs pale fuscous, ir- 

 rorated with white; apices of tibial and tarsal segments faintly ringed 

 with white; metathoracic leg shghtly paler. Forewings tuscous, with 

 irregular scattering of whitish or whitish tipped scales concentrated 

 somewhat along basal third of costa and at outer margin of discal 

 cell, forming a conspicuous, white, crescent-shaped mark; transverse 

 tuscous band at wing base distinct; fringe fuscous with irregular 

 scattering of white- tipped scales. Hind wings pale gray to whitish, 

 slightly darker at apex and anal area of wing; veins 3 and 4 stalked 

 over one-third their length. 



Abdomen: Pale fuscous above, slightly paler beneath. 



Female genitalia (figs. 89, 107). — Ovipositor relatively long; 

 posterior apophyses slightly less than twice the length of anterior 

 pair. Lamella antevaginalis broad, lateral margins strongly curved 

 outwards; posterior margin entire and strongly curved posteriorly; 

 ostium bounded laterally by a pair of darkly sclerotized, elongate 

 sclerites. Lamella post vaginalis with a darkly sclerotized, somewhat 

 rounded, median lobe. Antrum enlarged, globose; walls thickened 

 but smooth, not reticulate or papillose; abruptly narrowing to form 

 slender, largely membranous ductus brusae; walls of latter with a 

 relative sparse scattering of papillae. Corpus bursae elongate, slender. 

 Inception of ductus seminalis at caudal end of ductus bursae near 

 termination of antrum. 



Host. — Unknown. 



Distribution (map 11). — Presently known only from the southern 

 Rocky Mountains and Basin and Range Province from central 

 Colorado south to southern New Mexico and Arizona. 



Discussion. — This species resembles Bondia spicata very closely 

 in maculation as well as size and may represent the opposite sex of 

 that species, which is known only from the unique male. There 

 exists, however, one discordant feature which may prove of great 

 significance in separating these two entities. In B. spicata, veins 3 

 and 4 of the hindwing are separate, whereas in the unnamed species 

 described above these two veins are stalked for a considerable dis- 

 tance. Such a degree of intraspecific variation in venation has not 

 been observed in this family; instead, venational characters have 

 been found rather constant in those species studied which were repre- 

 sented by adequate samples. Both palpal and venational characters 

 suggest that this unnamed species is closely allied to B. Jidelis, and 

 it possibly may be referred to that species group as soon as the male 

 is discovered. Thus, I have not arbitrarily associated these two sexes 

 under a single name but deem it preferable to await additional infor- 



