42 BUKLETIN 132, UNITED STATES NATIONAL MUSEUM 



Hind wing with 3 and 4 connate, stalked or united; inner margin, 

 in male, sometimes with rought sex scaling ; male rarely with a slight 

 fold along vein Ic inclosing or partially inclosing the pecten from 

 lower median vein. 



Abdomen of male simple. 



KEY TO THE3 SPECIES OF LASPEYRESIA 



1. Fore wing with a broad well-defined median or antemedian transverse 



fascia ; or a whitish suffusion at middle extending from dorsum to costa 



and much extended on latter ; or with basal half of wing whitish 2. 



Fore wing otherwise 9- 



2. Antemedian pale area of fore wing distinguished as a broad fascia bounded 



inwardly and outwardly by narrow metallic bands extending from 



costa to dorsum 3. 



Pale area covering a greater part of basal half of wing ; when defined as 

 an antemedian fascia, not bounded by metallic bands 4. 



3. Antemedian fascia whitish ocherous, strongly contrasted against dark basal 



and median areas (21) tana. 



Antemedian fascia grayish ocherous only slightly paler than basal band and 

 median areas (22) cupressana. 



4. Thorax and extreme base of fore wing concolorous with antemedian pale 



area :: (20) fletcherana. 



Thorax and extreme base of fore wing darker than antemedian area — 5. 



5. Dark basal patch of fore wing distinct only to top of cell ; costa at base 



white and but faintly marked by dark scaling ; hind wing white 



at base 6. 



Basal patch complete to costa ; costa at base dark or very strongly marked 

 with dark scaling; hind wing not white at base 7. 



6. Thorax white with a dark narrow transverse median band; entire patagia 



white; alar expanse less than 14 mm (25) gallaesaliciana. 



Thorax black with white dusting on posterior half ; patagia with a blackish 

 shade on anterior margin; alar expanse over 15 mm (26) lautiuscula. 



7. Basal patch leaden fuscous or semilustrous fuscous drab 8. 



Basal patch blackish (27) flexiloqua. 



8. Dark terminal area of fore wing strongly dusted with black; longitudinal 



black streaks of ocelloid patch not sharply defined, more or less fused into 



the black dusting of the entire terminal area (24) leucobasis. 



Dark terminal area with only scattered black dustings; longitudinal black 

 streaks of ocelloid patch sharply defined and interspaced with ocherous 

 fuscous (23) prosperana. 



9. Fore wing with greater part of costal area white (14) populana. 



Fore wing with greater part of costal area gray or brown 10. 



10. Terminal area of fore wing pink or red 11. 



No pink or red shading in terminal area 12. 



11. Terminal area pink ; ocelloid patch consisting of a single vertical leaden 



metallic bar inwardly margined by a narrow blackish fuscous shading and 



(on its upper half) by a second narrow metallic bar (30) ninana. 



Terminal area red ; ocelloid patch consisting of two vertical bronzy metallic 

 bars inclosing six or seven longitudinal blackish fuscous streaks upon a 

 white ground (29) flavicollis. 



