AKT. 19. MOTHS OF THE GENUS DIATRAEA DYAR AKD HEINRICH 39 



ALAMOGORDIA PARALLELA (Kearfott) 



Figure 32 



Diatraea paraJJeJa Keaefott, Proc. U. S. Nat. Mus., vol. 35, 1908, p. 391. — 

 Barnes and McDunnough, List Lepid. Bor. Amer., No. 5439, 1917. 



Fore wing yellow, with a longitudinal white ray through the cell 

 from base to margin. 



Male genitalia figured from type. 



We have only males of the type series, from New Mexico. 



Life history unknown. 



Type. — In National Collection. 



Type locality. — ^Alamogordo, New^ Mexico. 



DIATRAENOPSIS, new genus 



Front nearl}^ flat and smooth. No ocelli. Labial palpi porrect, 

 moderate, not extending twice the length of the head. Maxillary 

 palpi heavily tufted with linear scales. Antenna of male slightly 

 thickened: of female filiform. Fore wing with veins 4-5 separate 

 at origin; 6-7 from the cell; 8-9 stalked; 10-11 from the cell, 11 free. 

 Hind wing with vein 6 from apex of cell. 



Male genitalia with vinculum rounded beneath, much enlarged. 

 Harpe divided, with costa developed as a free curved hook with a 

 very broad base. Uncus triangular tapering to a blunt hook. 

 Gnathos a heavy semicircular band terminating in a short hook; 

 unspined. Anellus a simple flattened plate with a detached juxta 

 and without lateral arms. 



Female genitalia with ductus bursae rather long, chitinized only 

 toward genital opening. Bursa moderately large; w^ithout signum. 

 Ovipositor and supporting rods normal. 



Abdomen of male without tufts on second segment. 



Genotype. — Diatraea differentialis Fernald. 



DIATRAENOPSIS DIFFERENTIALIS (Fernald) 



Figures 34, 79 



Diatraea differ entiaUs Fernald, Ent. Amer., vol. 4, 1888, p. 120. — Febnaxd, 

 in Dyar List, Bull. 52, U. S. Nat. Mus., No. 4626, 1903.— Barnes and 

 McDunnough, List, Lepid. N. Amer., No. 5441, 1917. 



A veiy large species with the male fore wing blackish brown, the 

 female lighter brown. 



The male genitalia (figured from type) are strikingly like those of 

 Platytes (?) alleni Fernald, the only appreciable difference being in 

 the shape of the uncus and gnathos. 



