AMERICAN MOTHS OF THE SUBFAMILY PHTCITINAE 



29 



but less so and more remote from the base of 8-9 on 

 large females than on the smaller females and average- 

 size males. On the hind wing 4 and 5 are usually 

 shortly stalked or connate but on some large specimens 

 are closely approximate for nearly half their lengths 

 beyond the lower angle of the cell. 



49. Hypsipyla ferrealis (Hampson), new combination 



FiGUBES 176, 657 

 Crocidomera ferrealis Hampson, Ann. Mag. Nat. Hist., ser. 10, 

 vol. 4, p. 352, 1929. 



Maculation of forewing similar to that of grandella 

 except: Brownish fuscous, the general color decidedly 

 more brown than gray, the dull reddish dusting giving 

 the wing a somewhat rosy brown tint; dark lining on the 

 veins less conspicuous and more discontinuous; ante- 

 medial pale line very faint, obsolete on many specimens, 

 indicated chiefly by its broken black outer margin ; the 

 white spot beyond this black margin (conspicuous in 

 grandella) absent or indicated only by a faint ocherous 

 white shade ; subterminal line very faint, indicated by a 

 black shading on the veins along its inner margin, sinu- 

 ate, rather deeply indentate at vein 6 and lower fold. 

 Hind wing smoky fuscous with a faint brownish or 

 ocherous tint, more or less smoky white towards base ; 

 veins darkly outlined. Eighth abdominal segment of 

 male with three pairs of ventral hair tufts. Alar 

 expanse, 20-43 mm. 



Male genitalia with uncus of the same shape, but 

 wider than that of grandella; vinculum narrower, 

 longer than broad; transtilla with horns of central area 

 divergent, forming a roimd-bottomed V, the central 

 connecting part of the transtilla slender. Female geni- 

 talia without signum. 



Type locality: SLxaola Kiver, Costa Rica (type in 

 BM). 



Food plant: Carapa guianensis (larvae feeding on 

 the seeds). 



Distribution: Costa Rica: Cachl, Cain, Juan 

 Vinas (May), Puerto Lim6n, Sixaola River (May, 

 Sept.), Tuis (May). Colombia: San Antonio (Dec). 

 Venezuela: Maturaca (Sept.). French Guiana: 

 Cayenne, St. Jean Maroni, St. Laurent Maroni. 

 Trinidad: Caparo. Brazil: Parfi. 



A distinct species easily distinguished from grandella 

 by its dark hind wings. The foregoing food plant and 

 Venezuelan records are from a series of small reared 

 specimens (20-24 mm.) submitted by Dr. Ballon in 

 1942. These are not only considerably smaller than 

 average from the other localities hsted; but are some- 

 what grayer in color. The genitalia, however, are 

 like those of typical Costa Rican examples. In 

 veneLtion ferrealis appears somewhat less variable than 

 grandella. Vein 10 of forewing is always from the 

 cell and 4 and 5 usually shortly stalked, rarely con- 

 tiguous for a short distance beyond the cell. 



50. Hypsipyla doreimacula (Schaus), new combination 



Figures 175, 654 



Myelois dorsimacula Schaus, Ann. Mag. Nat. Hist., ser. 8, vol. lli 

 p. 245, 1913. 



The female type is badly rubbed and the markings 

 consequently obscured; ground color bronzy brown; 

 faint indications of a pale antemedial hne rather far 

 out on wing; fainter indications of a subterminal line; 

 at end of ceU a dark brown spot on discocellular vein 

 and shortly separated from it a similar spot in cell, 

 between them a pale spot (this marking at end of cell 

 seems the characteristic pattern character of the 

 species) ; below discocellular vein, on lower fold, a short 

 blackish streak. Hind wing semihyaline, lilacine, 

 darker towards apex; veins not appreciably darker. 

 Alar expanse, 40 mm. 



Female genitalia without signum. 



Type locality: Sixaola River, Costa Rica (Sept.) 

 (type in USNM). 



Food plant: Unknown. 



In addition to the female type I have before me 

 what I believe to be a male of the same species from 

 the Janse Collection, taken at La Selva, San Juan, on 

 the Chaco slopes of Colombia (4,600 ft., Sept.). It ia 

 as badly rubbed as the type but shows the same charac- 

 teristic markings at end of cell and on the fold beneath; 

 ground color of forewing rust-red; hind wing hyaline 

 white with a very faint ocherous tint; antennal ciliations 

 longer than on other species of the genus; at least 

 twice as long as width of shaft. Male genitalia with 

 stouter gnathos and quite differently shaped transtUla 

 from previous species, the prongs of transtilla rather 

 narrowly separated; penis without cornutus. The 

 venation is alike on both specimens except for vein 

 10 of forewing, which is from the cell on the female 

 and short-stalked with 8-9 on the male; 4 and 5 of 

 fore and hind wings are short-stalked; 6 of forewing 

 is sharply bent towards base and connate with 8-9. 

 Eighth abdominal segment of male simple. 



51. Hypsipyla fluviatella Schaus 

 Figure 177 



Hypsipyla fluviatella Schaus, Ann. Mag. Nat. Hist., ser. 8, 

 vol. 11, p. 246, 1913. 



Forewing long, and narrower in proportion than other 

 species of the genus; reddish brown, darker brown in 

 basal area; antemedial line w*^ll out towards middle 

 of wing, indicated by its brown outer border, the 

 latter out-bent from costa, thence nearly vertical to 

 inner margin, forming three lunules, defined by narrow, 

 pale buff inner shadings (the remains of the pale 

 antemedial line) , also preceded on inner margin by some 

 silvery gray dusting; a narrow, elongate, pale buff 

 patch on inner margin at tomus; a similar, wider, pale 

 streak from ceU to outer margin, occupying the space 

 between veins 5 and 8 and bisected longitudinally by 

 a narrow red-brown streak along vein 6. Hind wing 

 hyaline white, inner margin rather broadly tinted with 

 ocherous, and a narrow ocherous line along outer 

 margin. Alar expanse, 45-46 mm. 



Male genitalia with uncus broad throughout, its 

 terminal margin broadly rounded. Transtilla com- 

 plete but the central fusion weak; the horns widely 

 spaced, forming a broad, shallow U. Apical process 



