178 



tnsriTED STATES NATIONAL MUSEUM BULLETIN 2 07 



(on some females) at their marginal extremities. Alar 

 expanse, 15.5-19 mm. 



Male genitalia with a short knoblike projection from 

 base of clasper of harpe. Lateral lobes of anellus 

 short, stubby. Female genitalia as given for the genus. 



Type locality: La Chorrera, Panama (May; type 

 in USNM). 



Food plant : Unknown. 



Known only from the type locality. 



368. Choirera extrincica (Djar), new combination 



Figures 423, 913 



Rhodophaea extrincica Dyar, Ins. Insc. Menstr. vol. 7, p. 41, 1919. 



Similar to idiotes except: Forewing with less whitish 

 dusting; the transverse lines and their dark borders more 

 obscure; ground color a nearly uniform brownish gray 

 (fuscous). Hind wing with narrower smoky borders 

 along costa and terminal margin; veins 4 and 5 longer 

 stalked (4 very short and on some specimens vestigial or 

 altogether absent). Alar expanse, 13-15 mm. 



Male genitalia with clasper of harpe a simple hook (as 

 in postica); lateral lobes of anellus longer and more 

 slender. Female genitalia with appreciably smaller 

 bursa and entire genitalia shorter. 



Type locality: Santiago, Cuba (type in USNM). 



Food plant: Unknown. 



Known only from the type locality (May, June, Oct.). 

 Represented in the National Collection by 12 males and 

 2 females. 



369. Chorrera postica (Zeller), new combination 

 FlGURB 424 



Myelois postica Zeller, Horae Soc. Ent. Rossicae, vol. 16, p. 213, 



1881. 

 Nephopteryx postica (ZeUer) Ragonot, Monograph, pt. 1, p. 292, 



1893. 



Similar to idiotes except: Thorax and basal two- 

 thirds of forewing heavily dusted with white, making 

 ground color an ashy white as far on forewing as the 

 dark gray transverse shade extending from costa at 

 beginning of subterminal line to outer third of inner 

 margin. Hind wing without dark shade along costa 

 and with only a faint, narrow, dark shade on inner 

 margin at apex. Alar expanse, 18 mm. 



Type locality: Honda, Colombia (type in BM). 



Food plant: Unknown. 



Known only from the type locality. 



Genus 90: Tacoma 



[Venational division B. Forewing with veins 4 and 5 stalked for 

 nearly half their lengths. Hind wing with vein 2 near lower angle 

 of cell; 4 and 5 long stalked; cell about one-third the length of 

 wing. Antenna of male simple. Labial palpus upturned, slen- 

 der. Maxillary palpus squamous. Male genitalia with apical 

 process of gnathos a pair of converging bladelike projections; 

 transtaia absent ; harpe simple ; penis unarmed. Female genitalia 

 with signa developed as two plates armed with long, curved, 

 clawlike spines; ductus bursae from middle of bursa, long, slender, 

 membranous; ductus seminalis from bursa remote from junction 

 of ductus bursae and bursa.] 



90. Genus Tacoma Hulst 



Tacoma Hulst, Ent. Amer., vol. 4, p. 115, 1888; Phycitidae of 

 N. Amer., p. 139, 1890. — Ragonot, Monograph, pt. 1, p. 205, 

 1893. (Type of genus: Tacoma feriella Hulst.) 



Tongue weU developed. Antenna simple. Labial 

 palpus upturned, cylindrical, slender, reaching to vertex; 

 third segment one-third the length of second, acimiinate. 

 Maxillary palpus squamous. Forewing smooth; 11 

 veins; vein 2 from before but rather near lower outer 

 angle of cell; 3 from the angle; 4 and 5 stalked for 

 slightly less than half their lengths; 6 from below upper 

 angle, straight; 8 and 9 stalked for a half or a trifle more 

 than half their lengths; 10 from the cell; male without 

 costal fold. Hind wing with vein 2 from before but near 

 lower outer angle of cell; 3 from the angle, connate with 

 the stalk of 4-5 ; 4 and 5 long stalked (for over two-thirds 

 their lengths) ; 7 and 8 closely approximate for a short 

 distance from ceU; cell about one-third the length of 

 wing; discoceUular vein curved and outwardly produced 

 at lower angle of cell. Eighth abdominal segment of 

 male simple. 



Male genitalia with uncus triangulate, its apex bluntly 

 rounded. Apical process of gnathos a pair of converg- 

 ing, flattened, pointed, bladelike projections. Trans- 

 tilla absent. Harpe simple, narrowly elongate. Anel- 

 lus a simple shield. Aedeagus simple, straight; penis 

 unarmed. Vinculum stout, subtriangulate with nar- 

 rowly roimded terminal margin; about as long as 

 greatest width. 



Female genitalia with bursa shaped like an elongate 

 potato, with ductus bursae arising from its middle; 

 signa developed as two strongly spined plates, one of 

 irregular shape armed with numerous, slender, long, 

 curved spines and situated at junction of bursa and 

 ductus bursae, the other a narrow curved band with a 

 row of well spaced, strong, curved, clawlike spines 

 along one edge; also in bursa several (6 or more) small, 

 detached, curved, thornlike spines; ductus bursae much 

 longer than bursa, slender, membranous throughout; 

 genital opening simple, small; ductus seminalis from 

 bursa remote from junction of bursa and ductus bursae. 



A monotypical genus of unmistakable distinctness, 

 easily identified by its genitalia. Except for their 

 genitaha the sexes are not distinguishable on any 

 external characters. The spining of the female abdo- 

 men mentioned by Hulst (1890) is nonexistent. It is 

 impossible to conceive what he saw or thought he saw, 

 for there is no such structure on either the female or the 

 male. 



370. Tacoma feriella Hulst 

 Figures 37, 425, 912 



Tacoma feriella Hulst, Ent. Amer., vol. 4, p. 115, 1888; Phycitidae 



of N. Amer., p. 139, 1890. — Ragonot, Monograph, p. 1, p. 



205, 1893.— McDunnough, Check list. No. 6142, 1939. 

 Tacoma suhmedianella Dyar, Ins. Insc. Menstr., vol. 1, p. 34, 



1913.— McDunnough, Check list. No. 6144, 1939. (New 



synonymy.) 



Forewing gray, with an irregularly intermixed pow- 

 dering of black and white scales, the black predomi- 



