REVISION OF GENUS ZAMARADA i 5 



S. tenebrosa (Swinhoe, 1902 : 605); both species will probably require a new- 

 genus after further study. 



Hydatocapnia marginata (Warren, 1893 : 388, pi. 32, fig. 22). Transferred by 

 Warren (1895 : 143). 



Peratophyga xanthyala (Hampson, 1896 : 553). Transferred by L. B. Prout 

 (1926a : 193). 



Key to species-groups based on male genitalia 



1 Dorsal process of valve dilate and wholly membranous at apex ... 2 



- Dorsal process of valve tapered to narrowly rounded apex or finely tapered 

 and tipped with a hook-like spine; or bearing a tapered or spatulate 

 projection in apical fourth; or serrate-edged in apical half ... 3 



2 (1) Dorsal processes symmetrical, dilate and evenly rounded at apices (Text-fig. 5), 

 similar to those found in genus Semiothisa . . . keraia-group (p. 22) 



- Dorsal processes asymmetrical, apical margins shallowly excavate. Valves 

 asymmetrical. Uncus bilobate ..... weberi-group (p. 265) 



3 (1) Dorsal process of valve little tapered, apex rounded, not tipped with a spine. 

 Valves usually asymmetrical ......... 4 



- Dorsal process of valve not so formed ....... 6 



(3) Dorsal process straight, densely and slenderly spined apicad. Valves asym- 

 metrical. Fulcrum dilate and spiral in apical half, one margin densely 

 scobinate (Text-fig. 243). Vesica without cornuti . purimargo-group (p. 143) 



Dorsal process curved or angled through 90 degrees in apical third; valves 



symmetrical or asymmetrical ........ 5 



(4) Dorsal process curved through 90 degrees and finely setose in apical third; 

 valves asymmetrical. Juxta boldly bilobate at apex. Fulcrum subequal 

 in length to aedeagus, narrowly rounded at apex; vesica without cornuti 



nasut a-group (p. 148) 

 Dorsal process angled through 90 degrees and coarsely spined in apical third; 

 valves symmetrical or asymmetrical. Fulcrum slender basad, apex dilate 

 to partly enfold aedeagus; vesica with cluster of cornuti 



bathyscaphes-group (p. 136) 



6 (3) Dorsal process ornamented with digitate, spatulate or spined projections; or 

 serrate-edged; or with serrate-edged projection in apical half; basal fourth 

 simple without setose projection or dilation; valves simple, membranous 

 or weakly sclerotized and symmetrical, occasionally with a weak, setose 

 ridge parallel with dorsal margin. Vesica with one or more cornuti . . 7 



- Dorsal process of valve without ornamentation, but curved or angled to finely 

 tapered apex tipped with a hook-like spine ...... 10 



7 (6) Basal two-thirds of dorsal process of valve straight ; a short, spatulate, digitate 

 projection at this point; valve weakly sclerotized, sparsely setose, apex 

 boldly rounded (Text-fig. 261). Vesica with a tapered, scobinate cornutus 

 near apex and a second, transverse cornutus medially 



candelabra-group (part, candelabra, exigua) (p. 155) 



- Dorsal process not so formed; valves wholly membranous, usually slightly 

 narrowed to rounded apex and setose on ventral surface apicad. Cornuti 

 differently formed . ......... 8 



8 (7) Aedeagus with stout, tapered projection, smooth-edged or scobinate, from 

 three-fifths. Ventral plate of gnathus weakly sclerotized and smooth, or 

 absent. Dorsal process of valve scobinate for whole length from dilate 

 base to tapered apex (Text-fig. 75), or with large, serrate-edged plate in 

 apical half (Text-fig. 77) ...... differens-group (p. 62) 



