68 



UNITED STATES NATIONAL MUSEUM BULLETDT 207 



Type locality: Avangarez, Costa Rica (July; type 

 in USNM). 



Food plant: Unknown. 



Known only from the female type. It lacks an 

 abdomen so genitalia could not be studied. However, 

 the coloration of forewing suggests a species distinct 

 from anything else in the genus. 



137. Anadelosemia fifria Dyar 



Figure 726 

 Anadelosemia fifria Dyar, Ins. Insc. Menstr., vol. 7, p. 52, 1919. 



Forewing similar to that oi senesciella except: Whitish 

 ground color more extended filling most of outer area ; a 

 dark brown shading at extreme base; dark shadings 

 fuscous brown rather than blackish; antemedial white 

 line narrow, its dark borders also narrower; the post 

 media, transverse dark shade also narrower; terminal 

 dots more or less confluent. Alar expanse, 15 mm. 



Female genitalia with signum, developed as a narrow, 

 smaU, shallow, granulate cup. 



Type locality: Cayuga, Guatemala (type in USNM). 



Food plant: Unknown. 



Represented only by the female type and one other 

 female from the type locality (May). 



138. Anadelosemia base Dyar 



FiGUBE 727 



Anadelosemia base Dyar, Ins. Insc. Menstr., vol. 7, p. 52, 1919. 



Similar to the foregoing species (Jvfria) except: Dark 

 markings a paler brown; the outer dark border of costal 

 haK of antemedian line a small triangulate spot with 

 some extension outward on costal edge; terminal dots 

 rather weak but not confluent. Alar expanse, 15 mm. 



Female genitalia without signum; ductus bursae pro- 

 portionally much longer than that of fijria; ductus 

 seminalis from near middle of ductus bmsae. (In the 

 other species it branches off from the ductus bursae 

 very near its junction with the bursa copula trix.) 



Type locality: Cayuga, Guatemala (type in USNM). 



Food plant: Unknown. 



Known only from the female type and one other 

 female from the type locahty. Superficially hardly dis- 

 tinguishable from jljria. However, the differences in 

 their female genitaha suggest two distinct species. 



139. Anadelosemia obstitella (Schaus), new combination 



Figure 728 



Nephopteryx obstitella Schaus, Ann. Mag. Nat. Hist., ser. 8, vol. 

 11, p. 251, 1913. 



The largest and most strikingly marked species in the 

 genus; the antemedial and subterminal lines shining 

 white; the inner, black bordering line of the former 

 continuous from costa to inner margin and strongly con- 

 trasted against the ashy gray ground color of the basal 

 area of the forewing; outer black border on costal half 

 of antemedial line and the black dashes preceding and 

 following the subterminal line enlarged and well con- 

 trasted. Hind wing semihyaline white with a very faint 



brownish tint; veins faintly darkened; a narrow, pale 

 fuscous shading along termen, especially towards apex. 

 Alar expanse, 22 mm. 



Female genitalia with signum present as a narrow, 

 weak, elongate, irregular scobinate patch (see enlarge- 

 ment). The shape and development of signum is a 

 character of very doubtful value in this genus and 

 probably subject to considerable individual variation. 



Type locality: Mount Pods, Costa Rica (type in 

 USNM). 



Food plant: Unknown. 



Known only from the female type. 



140. Anadelosemia texanella (Hulst), new combination 

 Figures 246, 729 



Myelois texanella Hulst, Canadian Ent., vol. 24, p. 60, 1892. 



Myelois dulciella Hulst, Canadian Ent., vol. 32, p. 176, 1900. 



Tacoma texanella (Hulst) Barnes and McDunnough, Contribu- 

 tions, vol. 3, p. 193, 1916; vol. 4, p. 174, 1918.— McDun- 

 nough, Check list, No. 6143, 1939. 



Forewing ashy white (due to a fine, sparse peppering 

 of fuscous scales on the white ground color) ; costal edge 

 at extreme base black; antemedial line not differenti- 

 ated except by the narrow, curved, black line forming 

 its outer border from costa to inner margin and by a 

 preceding brown spot on inner margin; subterminal line 

 sinuate, nan-ow, bordered inwardly by a continuous 

 black line and outwardly by a faint, narrow, brownish 

 shade continued from a blackish dash on costa; discal 

 spots black, separated. Hind wing smoky white, dark- 

 ening outwardly; a fine brown Kne along termen. Alar 

 expanse, 13-16 mm. 



Male genitalia figured from type of dulciella. They 

 exhibit several specific characters: a long, slender, 

 strongly sclerotized, spinelike, apical projection from 

 gnathos (the other species whose males are known show 

 no such structure, the only elements attached to the 

 lateral arms of gnathos at their junction being the 

 transtilla and the base of the more or less sclerotized 

 subanal plate) ; tegumen considerably elongated in pro- 

 portion to the vinculum; harpe short and broad; penis 

 finely spined at apex. Female genitalia without signum; 

 ductus seminalis from ductus bursae near junction of 

 bursa copulatrix. The distinctive female structural 

 character is the shape of the eighth-segment collar (fig. 

 729). 



Type localities: Blanco County, Tex. (texanella, 

 in AMNH, ex Rutgers); Hastings, Fla. {duldella, in 

 AMNH, ex Rutgers). 



Food plant: Unknown. 



Distribution: United States: Texas, Blanco 

 County, San Benito (Apr., Sept.); Florida, Hastings 

 (Oct.). Puerto Rico: San German (Apr.) ; Cuba: Santa 

 Clara, Central Soledad ("E. E. A. Cuba, Ento. no. 

 10234," May). 



The Puerto Rican and Cuban examples are males 

 which agree in every detail with the type of duldella. 

 The type of texanella lacks an abdomen, so its genitalia 

 could not be checked (the other Texas examples are 

 females) ; but careful study of the two types discovered 



