68 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 115 



Gonionota determinata, new species 



Figure 3; Plates 1 (Fig. 5), 2 (Fig. 3) 



Alar expanse 19-27 mm. 



Labial palpus bright buff yellow; second segment strongly suffused 

 with brown anteriorly and laterally, with considerable reddish ocherous 

 scaling on outer side; third segment edged with reddish ocherous 

 anteriorly and with a few black scales subapically on inner side. An- 

 tennal scape reddish ocherous dorsally, silvery white ventrally; 

 remainder of antenna reddish ocherous proximally shading to fuscous 

 distally. Head and thorax bright buff yellow mixed with reddish 

 ocherous; posterior tuft brown. Ground color brown blotched and 

 suffused with fuscous; basal patch buff yellow to costal two-fifths, 

 heavily overlaid with reddish ocherous in females and divided near 

 middle by an angulate line of ground color; costal edge of basal patch 

 broadly brown in female and narrowly edged with fuscous in male; 

 beyond basal patch, and separated from it by an arm of ground color, 

 an outwardly oblique buff yellow blotch reaching vein three; beyond 

 this outer blotch subcostally a few scattered black scales; in cell at 

 two-fifths a fuscous spot; at end of cell a white dot bordered out- 

 wardly by a few fuscous scales ; at apical third of costa a narrow white 

 dash bordered inwardly with reddish ocherous and followed on costa 

 by a few white scales; apical fourth of wing lightly streaked with gray 

 scales; ciha brown apically deepening to leaden gray around termen 

 to tornus. Hind wing brownish ocherous in female, considerably 

 lighter in male, with conspicuous brown or fuscous scaling in anal 

 area; ciUa leaden gray apically becoming lighter toward anal section. 

 Legs silvery white; forefemur suffused brownish on outer side; fore- 

 tibia and first tarsal segment overlaid reddish ocherous; midtibia and 

 tarsi suffused brownish and tibia with some reddish ocherous ; posterior 

 tibia and tarsi lightly shaded with brownish. Abdomen ocherous 

 white ventrally, brown dorsally; from first sternum a strong eversible 

 scaletuft in male. 



Male genitalia: Harpe broadest about middle, then tapering some- 

 what abruptly to a bluntly pointed cucuUus; sacculus bearing a small 

 triangular protuberance ; clasper a moderately long arm from middle of 

 harpe terminating in cluster of rather short stout setae directed 

 toward sacculus. Anellus subrectangular, deeply cleft posteriorly 

 forming two long, narrow, divergent arms; from each side of anellus 

 a long, curved, pointed process. Aedeagus stout, curved, tonguelike 

 distally; vesica armed with a narrow band of strong cornuti. Vincu- 

 lum narrow, rounded. Gnathos a transverse oval knob. Socii small, 

 fleshy lobes sparsely clothed with fine setae. Uncus furcate, rather 

 thick basally. 



