ACRONYCTIX.E. 



f-. Frons with truncate conical prominence 

 with raised edges. 

 </•''. Abdomen with dorsal crests on basal 

 segments. 

 a 4 . Proboscis aborted, minute. 

 ft 5 . Fore wing with the termen and cilia 



strongly dentate Cetola, (2) p. 182. 



6*. Fore wing with the termen and cilia 



slightly crenulate Atrephes, p. 284. 



b*. Proboscis fully developed. 

 «■'. Thorax with slight double ridge-like 



crest Stauropides, (2)p. 269. 



b s . Pro- and metathorax with spreading 



crests Speocropia, p. 255. 



c 5 . Prothorax without crest, metathorax 



with large spreading crest Eudryas, p. 



d b . Thorax without crests. 

 a 6 . Thorax clothed with rough hair and 



scales mixed Paratvf.rta, p. 



b 6 . Thorax clothed with hair and hair-like 

 scales. 



a'. Palpi upturned Seudyra, p. 



h'i '. Palpi porrect Gerra, p. 



/A Abdomen with dorsal crest at base only. 

 « 4 . Prothorax with spreading crest. 

 nJ>. Frons with flattened vertical process to 



the frontal prominence Ruacodes, (2) p. 537. 



b h . Frons with longcentral process hollowed 

 out in front to the frontal prominence. 



a 6 . Proboscis aborted, minute Syncalama, p. 



b 6 . Proboscis fully developed Hadenella, ^2)p. 231. 



c-~>. Frons without central process to the 

 frontal prominence. 



t?6. Proboscis aborted Ecboi.emia, p. 448. 



b 6 . Proboscis fully developed. 

 a". Hind wing with vein 5 from middle 



of discocellulars Catamecia, (2) p. 540. 



b". Hind wing with vein 5 from below 

 middle of discocellulars. 



a s . Frontal prominence large Procrateria, (2)p. 533. 



ft 8 . Frontal prominence small Hypoperigea, (2) p. 422. 



fr*. Prothorax without crest. 

 a 5 . Frons with truncate process in middle 



of prominence Nocloa, p. 



ft 5 . Frons without truncate process in 

 middle of prominence. 



a 6 . Proboscis aborted, small Oslarta, p. 



b 6 . Proboscis fully developed. 

 <u. Frontal prominence large. 

 ft 8 . Palpi upturned. 

 a?. Mesothorax with paired crests ... Iambiodes. p. 659. 



/A Mesothorax without crest Apocalymnia, p. 



ft 8 . Palpi porrect. 



a 9 . Eyes small, reniform Agaristopes, p. 



ft 9 . Eyes large, round. 

 a i0 . Thorax clothed with hair and 

 scales mixed. 

 a 11 . Patagia fringed with long rough 



hair and scales Ovios, p. 



ft 11 . Patagia normal. 

 a 1 '-. Abdomen with fan-like crest 



formed of scales Radinocera, p. 



ft i2 . Abdomen with tufted crest 



formed of hairs Erocha, p. 



