80 



UNITED STATES NATIONAL MUSEUM BULLETIN 207 



165. Piesmopoda Isabella (Dyar), new combination 



FiGUHEs 264, 749 



Amphyciiopsis Isabella Dyar, Ins. Insc. Menstr., vol. 7, p. 45, 

 1919. 



Male antenna simple. Labial palpus short, hardly 

 reaching vertex on male and but a trifle beyond vertex 

 on female. 



Forewing as ia flavicans. Alar expanse, 18-20 mm. 



Male genitalia with cucullus of harpe subtriangulate, 

 harpe wider in proportion to its length and less evenly 

 tapering than in other species except apocerastes which 

 has similar male genitalia. Female genitalia with 

 signum; genital opening simple; distinguished by the 

 configuration of the eighth-segment collar. 



Type localitt: Juan Vinas, Costa Kica (type in 

 USNM). 



Food plant: Unknown. 



Represented by the male type and a shghtly larger 

 female from the type locahty (Jan.). The latter had 

 been identified by Schaus as "Piesmopoda flavicans 

 Zeller." The species served as type for Dyar's genus 

 Amphyciiopsis, erected solely on the basis of the short 

 labial palpi of the male. 



166. Piesmopoda xanthopolys Dyar 

 Figures 261, 748 



Piesmopoda xanthopolys Dyar, Proc. U. S. Nat. Mus., vol. 47, p. 

 332, 1914. 



' Male antenna simple. Labial palpi slender, extend- 

 ing above vertex in both sexes, somewhat longer on 

 female than on male. 



Forewing as in flavicans. On the female from the 

 type locality the purplish shading on the outer area of 

 the forewing is somewhat more extended and the yellow 

 area of the wing proportionally more restricted than in 

 Havicans; but this difference seems to be individual 

 rather than specific. In xanthopolis as well as the other 

 species with coloration similar to flavicans the extent of 

 piu^jle shading is variable between the sexes and even 

 among individuals of one sex. Alar expanse, 13-16 mm. 



Male genitalia figured from specimen from La Chor- 

 rera, Panamd. Their most obvious feature seems to 

 be the rather short arms of the bifid uncus (proportion- 

 ally shorter than those of any other Piesmopoda except 

 flavicans which has stouter transtilla and differently 

 shaped anellus and vinculum). Female genitalia with 

 signum present. Genital opening simple. Very close 

 to those of flavicans, with incurvation of posterior- 

 ventral margin of eighth-segment collar similar and ex- 

 hibiting only minor differences in the collar otherwise. 



Type locality: Porto Bello, Panamd (type in 

 USNM). 



Food plant: Unknown. 



Disteibution: Panama: Corozal (July), La Chor- 

 rera (May), Porto Bello (Sept., Dec). 



Known only from the original type series. Dyar in 

 1919 (Ins. Insc. Menstr., vol. 7, p. 44) placed xantho- 

 polys in the sjmonymy oi flavicans. The two species 

 are very close, but apparently distinct. 



167. Piesmopoda parva, new species 

 FiGTJBES 263, 750 



Male antenna simple except for a very shght incm-- 

 vation of the shaft towards base. Labial palpus slender, 

 reaching vertex; terminal segment acuminate. 



Forewing yellow with a slight ohvaceous tint; costa 

 rather broadly margined from base to near apex with 

 white faintly peppered with red scaling; a few red and 

 black scales at extreme base and for a short distance 

 from base along inner margin; no antemedial line; sub- 

 terminal line straight, oblique, close to termen, with 

 narrow purphsh fuscous borders and preceded by a fus- 

 cous shade which extends, triangularly, almost to the 

 cell. Hind wings translucent white with a faint smoky 

 tint, darkening slightly towards apex. Alar expanse, 

 10-11 mm. 



Male genitalia distinguished by the slender arms of 

 the divided uncus and the slender, naillike spine asso- 

 ciated with anellus. Female genitalia with signum; 

 genital opening simple. Distinguished by the broad 

 and deep excurvation in posteroventral margin of the 

 eighth-segment collar. 



Type locality: La Chorrera, Panamd (type in 

 USNM, 61333). 



Food plant: Unknown. 



Described from male type from the type locahty 

 (May), one male paratype from Cabima, Panamd (May 

 1911), and one female paratype from Taboga Isl., 

 Panamd (Feb. 1912), all collected by A. Busck. These 

 specimens had been included by Dyar among his para- 

 types of Piesm,opoda xanthomera. They are somewhat 

 rubbed but otherwise in good condition. The species 

 is the smallest of the Piesmopoda. 



168. Piesmopoda semirufella (Zeller) 

 Figure 752 



Myelois semirufella ZeUer, Horae Soc. Ent. Rossicae, vol. 16, p. 

 196, 1881. 



Piesmopoda semirufella (Zeller) Ragonot, Monograph, pt. 1, p. 

 160, 1893.— Dyar, Proc. U. S. Nat. Mus., vol. 47, p. 332, 

 1914; Ins. Insc. Menstr., vol. 7, p. 46, 1919. 



Several different species have been identified as semi- 

 rufella. I have seen but one example that can be defi- 

 nitely placed to Zeller's name, a female from Cayuga, 

 Guatemala, collected by Schaus and Barnes (Jan.). 

 The genitaha of this specimen have been checked by 

 Clarke with the genitalia of the type of semirufella and 

 he finds them identical. They have the signum present 

 and a broad, strongly sclerotized plate at genital open- 

 ing. The latter structure at once identifies the female. 

 Males of the species have not been properly associated. 



Superficially, semirufella is not distinguishable from 

 females of apocerastes Dyar. Indeed, several females of 

 the latter in both the British Museum and U. S. Na- 

 tional Collections had been identified as Zeller's species. 

 Alar expanse, 16 mm. 



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



Food plant: Unknown. 



