MOSQUITOES OF THE SUBGENUS FINLAYA — KNIGHT AND MARKS 533 



3. Midtarsal segment I with basal pale band at least one-third length of segment 



(at least on outer surface). 



Australasian Subgroup IV, purpureus (p. 535) 



Neotropical knabi of Subgroup X, knabi (p. 538) 



Midtarsal segment I with basal pale band not more than one-fourth length of 



segment ^ 



4. Hind tarsi with I and II basally banded, may be a few basal pale scales on III 



in some specimens; (paratergite bare, postspiracular area scaled). 



Subgroup XI, fengi (p. 538> 



Hind tarrii with basal bands on at least first three segments, frequently on 



more ^ 



5. Anterior one-half to two-thirds of scutum largely pale scaled or with median 



longitudinal stripe or patch of pale scales; (femora not mottled) — 6 



Without the above combination of characters (scutum various but if as above, 

 femora are mottled) Subgroup VI, alboaimulatus (p. 536) 



6. Scutum marked with either a large area or a median longitudinal stripe of pale 



scales (either silvery white or golden) on anterior two-thirds, this pale 

 area sharply delimited laterally and posteriorly from surrounding dark 



scaled areas Subgroup II, papuensis (p. 534) 



Scutum with the anterior half largely pale scaled (or at least not with a pale 

 area that is sharply set off from dark scaled background), the margins of 

 pale scaled area seldom sharply defined 7 



7. Postspiracular area scaled; paratergite bare. 



Subgroup VII, auronitens (p. 537) 

 Postspiracular area bare; paratergite scaled 8 



8. Female tori prominently scaled medially; (basistyle without a tuft of modified 



scales; female eighth abdominal segment not higher than broad, sternite 



prominently scaled; Neotropical) Subgroup IX, fluviatilis (p. 538) 



Female tori not scaled 9 



9. Basistyle with a tuft of modified scales; Australasian. 



Subgroup VIII, biocellatus (p. 537) 

 Basistyle without a tuft of modified scales; sub-Nearctic; (female eighth ab- 

 dominal segment higher than broad, sternite markedly compressed laterally 

 and bare of scales, or nearly so) Subgroup X, knabi (p. 538) 



Subgroup I, ALBOTAENIATUS 



Depnition. — Oriental. Basistyle with a tuft of modified scales on 

 the inner sternal surface (the male of a. var. mihircmus is unknown). 

 Claspette filament bladelike. Male palpi with long hairs arising 

 apically on III, and all along IV and V. Female tori scaled, or with 

 hairs only (female of lepchana undescribed) . Scales of vertex dor- 

 sum broad; may be narrow scales on the ocular margin and nape, 

 however. Scutal scaling not as in Subgroup II. Hind tarsi with 

 first three or four segments with basal pale bands, sometimes a few 

 basal pale scales on V ; may be a few apical pale scales on one or more 

 segments. Paratergite unsealed. Postspiracular area with or without 

 scales. Ppn with narrow scales, or else all broad scales. Neither 

 femora nor tibiae sprinkled with pale scales anteriorly. 



