30 



UNITED STATES NATIONAL MUSEUM BULLETIN 2 07 



of gnathos rather broad, oval, flattened. Eighth 

 abdominal segment of male simple. Female unknown. 



Type locality: Sixaola Elver, Costa Eica Ctype in 

 USNM). 



Food plant: Unknown. 



A distinct species easily distinguished by its narrow, 

 peculiarly marked, red-brown forewings and the oval, 

 flattened shape of the apical process of gnathos. The 

 male hind wings are distinctly triangulate, but this is 

 probably only a sex character. 



The forewing venation is fairly stable; vein 10 from 

 the cell; 6 bent towards base and narrowly separated 

 from 8-9 at base; 4 and 5 closely approximate for a 

 short distance from ceU. Hind wing with veins 4 and 5 

 shortly stalked or closely approximate for some distance 

 from the cell. 



The species is represented only by the type series 

 of four males from the type locality. 



9. Genus Hemiptilocera Bagonot 



Hemiptilocera Ragonot, Nouv. Gen., p. 9, 1888; Monograph, pt. 

 1, p. 144, 1893. (Type of genus: Hemiptilocera chino- 

 graphella Ragonot.) 



Tongue well developed. Antenna of male with basa^ 

 segment elongated, cylindrical; a tuft of scales on base 

 of shaft (weak on chinographella) ; shaft unipectinate 

 for two-thirds, crenulate and pubescent beyond. An- 

 tenna of female like that of the male type (chino- 

 graphella) except for lack of scale tuft on shaft and for 

 shorter basal segment; on other species of the genus 

 shaft simple and pubescent. Labial palpus ascending; 

 reaching to or nearly to vertex (shorter on chinographella 

 than on other species); slender. Maxillary palpus 

 small, squamous. Forewing smooth; 11 veins; vein 

 2 from well before lower outer angle of cell; 3 from the 

 angle, much closer to 4 than to 2; 4 and 5 connate 

 (chinographella) or closely approximate at base and 

 for a very short distance from cell (other species of 

 genus); 6 bent towards base, close to or connate with 

 8 at base; 10 from the ceU, closely approximate to the 

 stalk of 8-9 for some distance from cell; male without 

 costal fold. Hind wing with vein 2 from well before 

 outer angle of ceU; 3 from the angle, connate with or 

 closely approximate to 4-5; 4 and 5 stalked for about 

 half their lengths; 7 and 8 closely approximate beyond 

 cell; cell one-half or slightly less than one-half the 

 length of wing; discocellular vein curved. Eighth 

 abdominal segment of male with one or more paired 

 hair tufts and sternal plates modified, one strongly 

 Bclerotized element in the form of an open loop. 



Male genitaha with apical process of gnathos a hook 

 with notched apex. Uncus triangulate, apex bluntly 

 pointed. Transtilla complete, stout, arched, its central 

 area produced into widely spaced horns. Harpe with 

 costa strongly sclerotized (produced at apex on bigrana 

 and plumigerella, not produced on chinographella). 

 Anellus with short, stout, lateral arms. Penis armed 

 with strongly sclerotized cornutus and numerous 



sclerotized wrinklings. Vinculum stout, longer than 

 broad, terminal margin broad and more or less indented. 



Female genitalia with signum developed as a small, 

 strongly scobinate pocket; bursa large; ductus bursas 

 short, more or less sclerotized and strongly scobinate- 

 granulate, the scobinations and granulations extending 

 into bursa for a short distance from place of junction 

 with ductus; genital opening with sclerotized and more 

 or less wrinkled plate on lower margin (except on 

 exoleta); ductus seminalis from bursa near junction of 

 bursa and ductus bursae. 



This genus is distinguished by its pectinate male 

 antenna, the strong, stalking of veins 4-5 of hind wing, 

 the long vinculum with broad terminal margin, the 

 short arms of aneUus and its short, granulate-scobinate 

 ductus biursae. Eventually it may have to be restricted 

 to its type species (chinographella) and a new generic 

 placement found for the other species now included. 

 All of these have simple pubescent female antennae; 

 while those of chinographella are pectinate in both sexes. 

 There are also several differences between males of 

 chinographella and those of plumigerella and bigrana 

 (notably in the shape of the transtilla, the costal 

 development of harpe, and the size of the antennal 

 tuft) ; but unfortunately we do not know the males of 

 three other species (letharda, jocarella, exoleta) and until 

 they are known it seems the wiser com-se not to attempt 

 further generic separation. All the species have similar 

 habitus and wing maculation and (except for exoleta) 

 female genitalia showing only specific differences. 



52. Hemiptilocera chinographella Ragonot 



Figures 178, 658 



Hemiptilocera chinographella Ragonot, Nouv. Gen., p. 9, 1888; 

 Monograph, pt. 1, p. 144, 1893. 



Male antenna with scale tuft on base of shaft weak, 

 clay colored. Antenna of female pectinate, the pecti- 

 nations a trifle shorter than those of the male. Thorax 

 and basal segment of antenna clay-yellow. Forewing 

 clay yellow ("ohvaceous ocherous" according to 

 Eagonot) dusted and shaded with dull reddish brown 

 and dark grayish fuscous, the ground color predomi- 

 nating in the basal area, along the costa and (more 

 faintly) bordering the termen and as a narrow longi- 

 tudinal streak between the transverse line and including 

 at its middle the lower discal spot; antemedial line 

 faint, indicated chiefly by the broken elements of its 

 outer dark border (a short notched blackish streak 

 slanting outwardly from costa, a blackish spot on top 

 of cell, another on lower vein of cell and a third on lower 

 fold, these three blackish spots in a vertical line out 

 near middle of wing, on a few well-marked specimens 

 connected by a very faint, twice-outciu-ved dark line) ; 

 subterminal line somewhat stronger, inwardly margined 

 by a black spot, outwardly margined by a duller dark 

 shade, more or less accented at costa and on the veins; 

 discal dots at end of cell separated, distinct, especially 

 the lower one, black; along termen a row of distinct, 



