138 PROCEEDINGS OF THE NATIONAL MUSEUM vol. »o 



MARTYRHILDA SPHAERALCEAE, new species 



Plate 24, Figures 147, 147a ; Plate 41, Fiqube 237 



A small, gray, narrow-winged western species, closely related to the 

 foregoing, but easily distinguished from it by the genitalia. 



Head, palpus, and antenna dark grayish fuscous; face whitish 

 ochreous ; second segment of labial palpus whitish ochreous inwardly 

 and above with a liberal sprinkling of whitish-ochreous scales out- 

 wardly; third segment whitish ochreous above, the color extending 

 around middle to form an incomplete annulus ; apex whitish ochreous ; 

 antenna with narrow fuscous annulations. Thorax and ground color 

 of fore wing grayish fuscous, the tips of the scales narrowly whitish 

 ochreous ; basal part of fore wing, usually with more whitish-ochreous 

 scaling, appearing lighter than ground color and followed by a dark 

 fuscous shading ; at basal third two black obliquely placed discal spots 

 followed by white scales, the spots frequently confluent, forming an 

 outwardly oblique discal dash ; at end of cell a white discal spot sur- 

 rounded by blackish-fuscous scales; along costa and around termen 

 a series of indistinct fuscous spots ; underside of costa whitish ochreous 

 to apex ; a row of black scales around termen ; cilia gray mixed with 

 fuscous and whitish-ochreous scales. Hind wing grayish fuscous with 

 light fuscous cilia; a fuscous band around margin at base of cilia; 

 a blackish-fuscous line around apex and termen beneath. Legs fus- 

 cous irrorated with whitish ochreous; tarsi annulated with wliitish 

 ochreous. Abdomen fuscous above with grayish at the posterior mar- 

 gin of each segment ; grayish laterally and beneath with a row of black 

 lateral spots. 



Male genitalia. — Harpe ample, strongly sclerotized ; cucullus blunt- 

 pointed, clothed with fine hairs ; transverse arm of clasper appreciably 

 longer than longitudinal arm, reaching well beyond costa; sacculus 

 broader than one-third the width of harpe at base. Anellus roughly 

 rectangular, emarginate on the posterior edge; lateral lobes scarcely 

 developed. Transtilla a narrow band with well-developed, fused, 

 lateral hairy lobes. Aedeagus slender, slightly curved, longer than 

 one-half the length of harpe, pointed, unarmed. Vinculum rounded. 

 Gnathos an oval spined knob; supporting arms strongly sclerotized. 

 Socii fleshy hairy lobes, well separated. Tegumen with the apex 

 emarginate. 



Female genitalia. — Ostium small, round at extreme anterior edge 

 of genital plate. Genital plate broad, weakly sclerotized. Ductus 

 bursae moderately stout, membranous, tapering gradually into bursa ; 

 inception of ductus seminalis just anterior to the ostium. Bursa 

 copulatrix symmetrical, oval; signum a small, weakly sclerotized, 

 elongate plate. 



Alar expanse, 15-18 mm. 



