16 U.S. NATIONAL MUSEUM BULLETIN 257 



and less regular teeth along the top of the labis; in the female, absence 

 of a slight sclerite in the upper part of the ductus bursae and slight 

 differences of the sclerotization of the rim of the ostium bursae, 



Homona Walker, 1863 

 Key to the Philippine Species of Homona 



1. Males 2 



Females 5 



2. Costal fold absent; a large fulvous species (28 mm) H. aestivana 



Costal fold present 3 



3. Aedeagus with two long, subapical prongs; hind wing pale ochre. 



H. bicornis, new species 



Aedeagus either with teeth short, or these teeth not only apical; hindwing 



sometimes light fuscous 4 



4. Aedeagus with two short apical teeth; hmdwing fuscous. 



H. bakeri, new species 

 Aedeagus with a subbasal and an apical cusp; hindwing pale ochre. 



H. phanaea 



5. Very large, 38 mm; fore wing broad, not narrowed, with strongly sinuate costa 



and termen, apex produced; hindwing bright orange yellow. 



H. aestivana 



Smaller, 24-30 mm; forewing with costa less sinuate or straight, apex not 



produced; hindwing pale or light ochre 6 



6. Forewing hardly narrowed posteriorly, ovate truncate; cestum tortuous, not 



coiled H. bakeri, new species 



Forewang distinctly narrowed posteriorly, oblong; cestum coiled, not tor- 

 tuous 7 



7. Lamella postvaginalis, an oblong, longitudinal plate, continued as colliculum. 



H. bicornis, new species 



Lamella postvaginalis, a transverse plate, forming with colliculum a T-shaped 



structure H. phanaea 



Homona aestivana (Walker, 1866) 



Figures 303, 492 



Ericia aestivana Walker, 1866, List Lepidopterous Insects British Mus., pt. 35, 

 p. 1803 (cf. New Guinea). 



Homona aestivana. — Meyrick, 1910, Proc. Linn. Soc. New South Wales, 

 vol. 35, p. 212; 1912, in Aurivillius, Lepidopterorum Catalogus, pars 10, p. 14 

 1913, in Wytsman, Genera Insectorum, fasc. 149, p. 19; 1938, Trans. Roy. Ent. 

 Soc. London, vol. 87, p. 505. — Durrant, 1915, in Ogilvie-Grant, Rep. British 

 Ornithologists' Union and WoUaston Exped., . . . Dutch New Guinea, 1910- 

 1913, vol. 2, pt. 15, p. 153.— Diakonoflf, 1941, Treubia, vol. 18, p. 37; 1952, 

 Proc. Ned. Akad. Wet., ser C, vol. 55, p. 404; 1953, Verh. Ned. Akad. Wet., 

 Nat., ser. 2, vol. 49, no. 3, p. 19. 



Ericia posticana Walker, 1866, List Lepidopterous Insects British Mus., pt. 35, p. 

 1803 CcT, Sulals.). 



Distribution: New Guinea, Waigeu Is., Misool Is., Sula Is.; 

 Philippine Is. 



