AMERICAN MOTHS OF THE SUBFAMILY PHYCITINAE 



89 



Type locality: La Chorrera, Panama (type in 

 USNM). 



Food plant: Unknown. 



Distribution: Mexico: Chiapas (May). Guate- 

 mala: Cayuga (Jan., May, June, Aug.). Panama: 

 Cabima (May), Corozal (Feb., Nov.), La Chorrera 

 (Apr., May), Eio Trinidad (Mar., June), Tabernilla. 

 French Guiana: St. Jean Maroni. 



188. Drescoma cinilixa Dyar 



FiGUEB 283 



Drescoma cinilixa Dyar, Proc. U. S. Nat. Mus., vol. 47, p. 329, 

 1914. 



Markings and color of forewing as in cyrdipsa except 

 dark ground color and dark costal markings paler, 

 more ocherous fuscous than brown. Underside of male 

 hind wing with a patch of black sex-scaling above the 

 notch in cell, orange-yellow sex-scaling on the upper 

 vein of cell preceding the notch, on several veins follow- 

 ing the notch, and in the median fold at base of wing; 

 the indentation of upper vein of cell also much shallower 

 than on cyrdipsa, a concavity rather than a strongly 

 triangular notch. Hind wing paler; dull smoky white, 

 darkening towards termen and apex. Alar expanse, 

 15-16 mm. 



Male genitalia with transtilla narrowed towards 

 harpes; clasperUke projection from sacculus slender, 

 sharply pointed. Female unknown. 



Type locality: La Chorrera, Panamd (type in 

 USNM). 



Food plant: Unknown. 



Distribution: Guatemala: Cayuga (May). Pa- 

 namA: La Chorrera (May). 



Distinguishable from cyrdipsa by its paler color, the 

 secondary sexual characters of the male hind wing, and 

 the differently shaped transtilla and clasper. 



Genus 47. Monoptilota 



[Venational division B. Forewing with veins 4 and 5 closely ap- 

 proximate for a short distance from cell. Hind wing with vein 2 

 from well before angle of cell ; 3 from the angle ; cell one-third the 

 length of wing. Male genitalia with uncus bifid, its divided ele- 

 ments widely separated; transtilla incomplete; apical process of 

 gnathos a broadly triangulate hook. Male antenna unipectinate 

 with sinus and scale tuft in base of shaft.] 



47. Genus Monoptilota Hulst 



Monoptilota Hulst, Canadian Ent., vol. 32, p. 13, 1900. — Forbes, 

 Cornell Mem. 68, p. 621, 1923. (Type of genus: Monoptilota 

 nubilella Hulst.) 



Tongue well developed. Antenna of male (figs. 

 285g-h) with basal segment elongate, shaft unipectinate 

 and with a long shallow sinus at base containing a stout, 

 appressed scale tuft; of female simple, smooth. Labial 

 palpus obliquely upturned, reaching to vertex; second 

 segment broadly scaled; third segment small, acumi- 

 nate. Maxillary palpus squamous. Forewing smooth ; 

 11 veins; vein 2 from well before lower outer angle of 

 cell; 3 from the angle, much closer at base to 4 than to 



30032&— 56 7 



2; 4-5 closely approximate for a short distance from 

 cell; 6 from below upper angle of ceU, straight; 8 and 9 

 stalked for less than half their lengths; 10 from the cell; 

 male without costal fold. Hind wing with vein 2 from 

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

 connate with or very closely approximate at base to 

 stalk of 4-5; 4 and 5 stalked for about half their lengths; 

 7 and 8 closely approximate for a short distance from 

 cell; cell one-third the length of wing; discoceUular vein 

 curved. Eighth abdominal segment of male with a 

 pair of fine, weak, hair tufts. 



Male genitaUa with uncus bifid, the divided parts 

 widely separated and hooked at their apices. Gnathos 

 terminating in a triangulate, sharply hooked central 

 process, its supporting lateral arms strongly arched and 

 arising well down from ventrolateral projections of 

 tegumen; an elaborate well-sclerotized subanal plate 

 attached to alimentary tube. Transtilla incomplete, 

 consisting of two, widely spaced, slender, weakly sclero- 

 tized plates. Anellus a simple, moderately broad, par- 

 tially cm-ved band. Aedeagus short, stout; penis un- 

 armed. Vinculum short (shorter than broad) ; terminal 

 margin truncate. 



Female genitalia with signum developed as a spined 

 plate (individually variable); bursa otherwise smooth; 

 ductus bursae rather stout, expanding gradually into 

 the bursa, smooth except for a broad sclerotized banding 

 near genital opening; ductus seminaHs from bursa near 

 junction of bursa and ductus bursae. 



A unique genus of doubtful affinities. Contains but 

 the one North American species. 



189. Monoptilota pergratialig (Hulst) 

 Figures 27, 285, 763, 764 



Nephopteryx pergratialis Hulst, Trans. Amer. Ent. Soc, vol. 13, 

 p. 162, 1886; Phycitidae of N. Amer., p. 143, 1890. — Rago- 

 not. Monograph, pt. 1, p. 267, 1893. 



Nephopteryx grotella Ragonot, N. Amer. Phycitidae, p. 6, 1887. 



Monoptilota nubilella Hulst, Canadian Ent., vol. 32, p. 14, 1900. — 

 Chittenden, U. S. Dep. Agr. Div. Ent. Bull. 23, pp. 9-17, 

 1900.— Welden, Jour. Econ. Ent., vol. 1, p. 148, 1908.— 

 Forbes, Cornell Mem. 68, p. 621, 1923. 



Monoptilota pergratialis (Hulst) Barnes and McDunnough, Con- 

 tributions, vol. 3, p. 195, 1916. — Brannon, Journ. Econ. 

 Ent., vol. 27, p. 719, 1934.— Brimley, Insects of North Caro- 

 lina, p. 300, 1938.— McDunnough, Check list. No. 6141, 

 1939. 



Forewing dark fuscous (gray-brown) with blackish 

 shading on many of the veins and on costal half of wing; 

 along terminal margin a heavy dusting of white between 

 the veins, giving much of wing an ashy appearance; 

 antemedial line obscure, indicated chiefly by a diffused 

 blackish brown outer border, broadest and strongest 

 from costa to lower margin of cell, frequently inter- 

 rupted or obsciu-ed in the ground color towards inner 

 margin; sub terminal line sinuate, grayish white with 

 dentate blackish brown inner and outer borders ; discal 

 dots distinct, separated, blackish; a black line along 

 terminal margin more or less interrupted by white 

 streaklets at the vein ends. Hind wing of male semi- 

 hyaline white with veins slightly darkened and a black- 

 ish brown line along terminal margin; of female much 



