NORTH AMERICAN STENOMIDAE — DUCKWORTH 37 



Color: Face white; palpus white sprinkled with brown exteriorly. 

 Legs white; foreleg with dark scales on outer side, mid- and hindlegs 

 with dusky tarsi. Thorax ranging from dark fuscous to white dorsally 

 with somewhat large, dark, rounded tuft posteriorly. Abdomen 

 white sprinkled dorsally with dusky scales. Females with forewing 

 white, extreme base of posterior edge fuscous; conspicuous dark spot 

 at apical two-thirds; more distal, lighter, in-egular band extending to 

 posterior edge; and still more distal, very faint, narrow, transverse, 

 outwardly curved line across apical part of wing. In some specimens 

 a cloudy spot at midlength of posterior edge. Male with entire basal 

 portion of forewing blackish brown and, in addition to markings of 

 female, with additional cloudy, ill-defined, more or less transverse 

 areas on middle of forewing and across apical third; also an inter- 

 rupted line of small black marginal dots on apex. Hindwing light 

 whitish fuscous ; cilia white. 



Male genitaUa : Uncus simple ; gnathos well developed and pointed 

 at tip; harpes as in A. schlaegeri; anellus narrow, with two small 

 lobes; aedeagus large, sharply pointed at apex; cornuti a long mass 

 of small spines. 



Female genitalia: Genital plate a small band; ostium bm-sae sclerot- 

 ized, opening near center of genital plate; ductus bursae long, mem- 

 branous from ostium bursae to midlength, sclerotized from midlength 

 to corpus bursae; corpus bursae with dentate signum; inception of 

 ductus seminalis near ostium. 



Type: In the United States National Museum. 



Type locality: Brownsville, Texas. 



Food plant: S'ic^a spp. 



Distribution: Texas: Brownsville (Jan., June^; San Benito (July, 

 Aug., Sept.). 



This species is intermediate between A. leucillana and A. vesfulis 

 in color, differing, in the male genitalia, by the presence of a simple 

 uncus and a large cornutus in the aedeagus, and, in the female, by 

 the lower part of the ductus bursae being sclerotized. 



9. Antaeotricha humilis (Zeller) 



Figures 11, 31; Plate 2c; Map 5 



Cryptolechia humilis Zeller, 1855, Linn. Entom., vol. 10, p. 156. 



Cryptolechia nebeculosa Zeller, 1873, Verb. Zool.-Bot. Ges. Wien, vol. 23, p. 245. 



Harpalyce canusella Chambers, 1874, Canadian Ent., vol. 6, p. 235. 



Sienoma humilis Walsingham, 1889, Insect Life, vol. 2, p. 154. — Barnes and 



Busck, 1920, Contrib. Nat. Hist. Lep. North America, vol. 4, p. 238. 

 Antaeotricha humilis Busck, 1934, in Lepidopterorum catalogus, vol. 67, p. 24. 



Alar expanse 12-15 mm. 



Color: Face white sprinkled with brown; palpus white, sprinkled 

 with brown exteriorly. Foreleg brown, tarsi ringed with white; 



