MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 221 



Sphecosesia aterea Hampson, 1916 



Figure 698 



Sphecosesia aterea Hampson, 1916, Novit. Zool., vol. 26, p. 77 (cf ). 



Distribution: Philippine Is., Mindanao. 



The unique type specimen, a male, 22 mm, is from Mindanao, 

 Davao Prov. (Baker) (BM). 



Synanthedon Hiibner, 1820 



Synanthedon Hiibner, 1820, Verzeichniss bekannter Schmettlinge, p. 129. 



Type species: Sphy nx vespiformis hinne, 1761 (Europe) 



The genus is used in the modern concept as revised by Engelhardt 



(1946, p. 81) and by Popescu-Gorj, Nicidescu and Alexinschi (1958, 



vol. 11, fasc. 1, p. 67). 



Key to the Philippine Species of Synanthedon 



1. Forewing entirely suffused with dark color . . . S. chrysostetha, new species 

 Forewing for the greater part hyaline 2 



2. Forewing with dark terminal area narrow, fasciate . S. cirrhozona, new species 

 Forewing with dark terminal area extending halfway towards cell. 



S. sphenodes, new species 



Synanthedon chrysostetha, new species 



Figures 332, 701 



Male, 12 mm. Head shining purple blue, with prismatic reflections. 

 Antenna fuscous, on upper side becoming shining blue along pos- 

 terior half, lower side dull black. Palpus black; moderate, terminal 

 and median segments roughish below; terminal segment over 1/2, 

 rather smooth, pointed. Thorax (rubbed) light purple blue, shining; 

 pectus brilliant golden yellow. Abdomen long and slender; purple 

 blue above, purple and golden below. 



Forewing very narrow, dilated, broadest at 5/6, apex rounded, ter- 

 men rounded, very oblique. Whitish, very densely suffused with 

 purple black, bright purple in certain lights; broadly suffused along 

 margins of wing. Veins beyond cell streaked with purple black; 

 an inwards-oblique rather broad transverse fascia along closing vein; 

 trace of a yellow mark at 1/3 of wing. Cilia purple, with a golden 

 gloss. 



Hindwing narrow, semioval-lanceolate, tip rather rounded. Hya- 

 line, except purple-black edge, fuscous golden in certain lights, a 

 broad terminal band along posterior third of costa, almost reaching 

 to lower angle of cell, and dorsum (which is rolled up). Cilia con- 

 colorous. 



