522 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



KEY TO THE SUBGROUPS OF GROUP B (TERRENS-GROUP) 



1. Hind tarsi dark except for a basal white band on I. 



Subgroup V, unicinctus (p. 524) 

 Hind tarsi with additional markings 2 



2. Postspiracular area scaled; hind tarsi with basal and apical bands on I-IV, V 



usually all white Subgroup VII, atropalpus (p. 525) 



Postspiracular area without scales; hind tarsi without the above combination 

 of markings 3 



3. Scutum with an anterior area of pale scales, this sometimes divided partially 



or completely in the middle, a separate pale patch before wing base (if 

 coalesced with the anterior patch then of a different shade of color); fore 



tibiae with an anterior dorsal white area at, or near, the apex. _ 4 



Not with the above combination of characters 5 



4. Ppn with narrow scales only; basistyle with a prominent inner median tuft of 



scales Subgroup IV, tsiliensis (p. 524) 



Ppn with broad scales, or bare; basistyle without a tuft of specialized scales. 



Subgroup III, gubernatoris (p. 523) 



5. Hind tarsi with basal bands on I-III, narrow apical bands on I-II, a few pale 



scales may be present basally on IV Subgroup VI, seoulensis (p. 524) 



Hind tarsi with basal Ijands on I-II, an apical band on I 6 



6. Male palpi with numerous long hairs arising apically on III and all along IV, 



some also present on V, palpi not distinctly shorter than proboscis; claspette 

 filament of male genitalia cylindrical, narrow in lateral view. 



Subgroup I, terrens (p. 522) 



Male palpi with only a few short stiff setae on last two segments, palpi only 



about two-thirds length of proboscis; claspette filament of male genitalia 



broadly expanded in lateral view Subgroup II, argyrothorax (p. 523) 



Subgroup I, TERRENS, s. str. 



Deilmtion. — Neotropical s])ecies. Male palpi with numerous long 

 liairs arising apically on III and all along IV, some also present on 

 V. Basistyle without a specialized scale tuft. Claspette filament 

 cylindrical, curved, bladelike in lateral view. Scutum with a large 

 anterior area of pale scales, this frequently being partially or com- 

 pletely divided medially by a dark scaled area, the anterior area of pale 

 scales not separate from (rarely ver}^ narrowly so), nor of a different 

 color from, the patch of pale scales before the wing base. Ppn com- 

 pletely covered with broad pale scales. Postspiracular scales absent. 

 Fore tibiae without an anterior white patch at or near the apex. Hind 

 tarsi with base and apex of I and the base of II banded with pale 

 scales, the apical band on I frequently being as broad or broader than 

 the basal band on II (base of I dark or with only a few pale scales 

 in type series of podographieiLs) . 



Supplementary characters. — Vertex dorsum with at least narrow 

 scales along the longitudinal midline. Preala scaled below knob. 

 Subspiracular scale patch present (none in males of type series of 

 podographicus) . Some of the stemites with outstanding or rough- 

 ened scales apicaJly. 



