26 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 71 



late) at their tips. Anellus with long, slender, lateral arms, each 

 with a short subapical spur (a type of anellus reproduced in muel- 

 lerella and schausella). Penis without cornutus. Figured from 

 specimen from Colima, Mexico. 



Female genitalia of the Uneolata type. With ductus bursae ex- 

 tremely short. Area behind genital opening chitinized, this chitini- 

 zation continuing in a narrow somewhat wrinkled band almost to 

 ovipositor. A heavily chitinized semicircular band in neck of bursa. 

 Figured from type. 



Abdomen of male without hair tufts on second segment. 



From southwestern Texas, southern New Mexico, and Arizona to 

 Mexico — Los Mochis and Venadio, Sinaloa; Colima, Guadalajara, 

 Tehuacan. 



Superficially resembles Uneolata Walker, but the front is without a 

 tubercle. 



Type. — In National Collection. 



Type locality. — Guadalajara, Mexico. 



Food plant. — Corn (larvae boring in the stalks and roots) . 



DIATRAEA BELLIFACTELLA Djar 



Figures 22, 67 

 Diatraea lelUfactella Dyar, Ent. News, vol. 22, 1911, p. 205. 



A rather large species near Uneolata and schausella.^ but showing 

 indications of the transverse lines by thickening of the vein linings. 

 Discal and terminal dots discolorous with the vein linings. Front 

 with a conical tubercle. Hind tibia of male without a hair tuft. 



Expanse. — Male, 28 mm. ; female, 32 mm. 



Male genitalia with two projections from costa of harpe, a haired, 

 subbasal one and a small sparsely spined basal knob. Uncus broad 

 and bilobed. Gnathos proportionately broadened, unspined. Anellus 

 with a smooth, pointed, central projection, and with slender, pointed, 

 smooth rather long lateral arms. Cornutus an irregular chitiniza- 

 tion on surface of penis. Figured from type. 



Female genitalia with ductus short, strongly chitinized, and broad- 

 ening markedly toward bursa. Bursa greatly elongated, with a 

 semicircular chitinous band in neck. Genital opening with a pro- 

 truding semitubular, strongly chitinized mouth. Area behind and 

 for a short distance caudad of genital opening corrugated and 

 strongly chitinized. Figured from paratype from Castro, Parana, 

 Brazil. 



Abdomen of male with a pair of lateral hair tufts on second 

 segment. 



Easily recognized from its characteristic genitalia. 



