26 R.-W. CROSSKEY 
provided by Enderlein in his usual lavish way) are treated as unnecessary synonyms 
applying to concepts for which older genus-group names are available: Chromocharis 
and Hega are placed as synonyms of Euamphibolia, Laccura as a synonym of Pseudo- 
formosia, and Pancala as a synonym of Formosia s.str. 
The male genitalia and fifth abdominal sternite in Formosza s.l. call for no special 
comment as they differin no significant way from those of other Rutiliini or Proseninae 
in general. The shape of the surstyli (paralobes) is more square and ‘heavy’ in the 
subgenus Evamphibolia than in the other subgenera of Formosia, and males of this 
subgenus are therefore rather distinctive. 
KEY TO THE SUBGENERA OF FORMOSIA 
1 Postalar callus with 4-5 strong setae. One post ia seta (rarely none). Eyes of ¢ 
very strongly approximated or meeting, upper part of frons narrower than facial 
carina. Upper eye facets of $ often greatly enlarged. Head partly metallic (a 
few exceptions). No posthumeral setae. Mentum in profile normally rather 
slender and distinctly tapering (Text-fig. 13). Surstyli of f genitalia of varied form 
but normally tapering on apical half and not subquadrate (Text-figs 41-44) ‘ 2 
- Postalar callus with three strong setae. 2-3 post ia setae (sometimes very weak 
fourth seta). Eyes of $ not very strongly approximated, never meeting, frons at 
narrowest at least as wide as and normally wider than the facial carina. Upper eye 
facets of g not enlarged. Head non-metallic, entirely pollinose. Small post- 
humeral seta normally distinguishable among the prescutal hairing. Mentum in 
profile not unusually slender, upper and lower edges subparallel (Text-fig. 12). 
Surstyli of 3 genitalia very heavy and subquadrate in profile (Text-figs 52 & 53) 
EUAMPHIBOLIA Townsend (p. 33) 
2 Anterior surface of fore coxa almost completely haired (Text-fig. 16). One sterno- 
pleural seta (o + 1). Presutural dorsocentral setae absent. Abdominal T5 with- 
out long strong setae behind the main transverse row 
FORMOSIA Guérin-Méneville s.str. (p. 26) 
- Anterior surface of fore coxa bare on inner half, except near apex (Text-fig. 17). 
Two sternopleural setae (1 + 1). At least one small presutural dorsocentral seta 
present on each side of prescutum, though sometimes very weak. Abdominal T5 
with or without long strong setae behind the main transverse row 
PSEUDOFORMOSIA Brauer & Bergenstamm (p. 31) 
Subgenus FORMOSIA Guérin-Méneville 
Formosia Guérin-Méneville, 1843 : 263. Type-species: Rutilia mirabilis Guérin-Méneville, 
1831, by monotypy. 
Pancala Enderlein, 1936: 422. Type-species: Formosia callipygos Gerstaecker, 1860, by 
original designation. Syn. n. 
Diacnosis. Head metallic, at least in some lights, on postorbits, genal dilation, parafrontals 
and usually also upper parafacials (except in vividiventris sp.n.). Head of g holoptic or nearly 
so, upper interfrontal area obliterated or nearly so by meeting parafrontals, frons at its narrowest 
point not as wide as facial carina. Upper facets of g eyes often much enlarged, ocelli then 
very prominent. Arista shortly plumose, hairs longer than basal thickness of arista. Mentum 
of proboscis rather slender, tapering distally. No posthumeral setae. No presutural dorso- 
central setae. One strong post ia seta. One sternopleural seta (o + 1). Postalar callus with 
4-6 setae. Scutum often with supernumerary strong prescutellar setae between the hindmost 
post acy and post dc setae, the setae together forming a transverse prescutellar row. Disc of 

