316 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



slide 10039), ABK; Six Mile Creek, Ithaca, 2 cf , 3 9, July 23, 25, 

 1960, R. W. Hodges (RWH slides 1157-1160, RWH wing slide 41), 

 CU, USNM; PENNSYLVANIA: Oak Station, Allegheny Co., 1 cf, 

 July 11, 1907, Fred Marloff (JFGC slide 10225), USNM. 



There is an additional specimen, probably C. purpuriella, in the 

 USNM from Dallas, Texas; however, because the abdomen is missing, 

 I hesitate to indicate such a large extension in range without being 

 able to verify the identification by examination of the genitalia. 



Obithome, new genus 



Figures 1, 15, 66 



Type-species: Mompha punctiferella Busck, 1906. 



Head: smooth-scaled; labial palpus recurved, second segment 

 longer than third, apex of third segment relatively blunt; tongue 

 moderate, scaled basally; maxillary palpus directed ventrally and 

 somewhat folded over base of tongue; antenna two-thirds to three- 

 fourths length of forewing, pecten present; ocellus visible. Forewing: 

 lanceolate; 12 veins present; cell closed; 2 from three-fourths of cell; 

 3 from angle of cell; 7 and 8 long-stalked; 11 from three-fifths of 

 cell. Hind wing: sublanceolate; 8 veins present; 2, 3, 4, and 5 

 approximately equidistant; 6 from 7 slightly beyond two-thirds 

 length of hind wing. Male genitalia: valvae asymmetrical, right 

 valva longer than left; manica connecting aedeagus to vinculum 

 parallel with aedeagus; vinculum narrow; tegumen narrow, broadened 

 immediately before apex; uncus absent; eighth abdominal segment 

 apparently involved with genitalia, lateral rodlike extension on each 

 side. Female genitalia: apparently modified for piercing; apophyses 

 anteriores and posteriores stout, heavily sclerotized; ostium bursae 

 before middle of seventh abdominal sternum; signum present. 



Obithome appears to be derived from Ithome. The female genitalia 

 of the two genera are very similar, and probably both represent a 

 modification for piercing or for placing eggs within flower buds. 

 Female genitalic differences between the two are as follows: the 

 apophyses anteriores are joined in Obithome, separate in Ithome; there 

 is one signum in Obithome, none or two in Ithome. The male genitalia 

 depart markedly from those of Ithome, and, in fact, it is difficult to be 

 sure of the homologies. The eighth abdominal segment has become 

 involved in the genital structure with two lateral lobes, which may 

 functionally replace the valvae. Dorsally, this segment is narrow, 

 and ventrally it is a broad lobe. These four areas form a continuous 

 ring. The valvae are reduced and asymmetrical, the right one being 

 longer than the left. There is a broad lobe or band, extending from 

 valva to valva, to which I cannot apply a name. It may be a part 



