54 R. W. CROSSKEY 
also confusa Malloch (a species of Rutilia s.str. with bare suprasquamal ridge), out of 
Rutilia to which they so obviously fit well on the total facies provided by all their 
other characters and into Formosia (with which, apart from the bare ridge, they 
have little in common). The oversimplified picture provided by Malloch’s concep- 
tion of two genera Formosia and Rutilia always clearly separable by the ridge 
vestiture character is not justified when all characters are correlated, and the species 
here forming the subgenus Ameniamima are considered in this revision to belong to 
Rutilia s.l. in spite of the exceptional feature of lacking hair on the suprasquamal 
ridge. 
Note should be made here of Malloch’s (1928a : 333; 1929 : 297; 1930 : 107) 
misidentification of Rutilia argentifera Bigot. The true argentifera Bigot with bare 
prosternal membrane, bare parafacials and bare suprasquamal ridge, is the species 
here designated as type-species of Ameniamima subgen. n. and is not the species called 
argentifera by Malloch (who did not see Bigot’s types and whose citations given 
above to this species are all based on misidentifications). Malloch’s species to which 
he applied Bigot’s name has the prosternum hairy (see Malloch’s 1928a : 333 key) 
and the parafacials haired (Malloch 1929 : 297-298), and also has the suprasquamal 
ridge hairy (otherwise he would have placed it in Formosia), and is clearly a species 
of the subgenus Chrysorutilia. 
INCLUDED SPECIES 
Rutilia (Ameniamima) argentifera Bigot. AUSTRALIA (New South Wales, 
Queensland). [Lectotype examined]. 
Jrontosa (Malloch) syn. n. [Holotype examined]. 
R. (A.) cingulata (Malloch). AustrRALt1A (New South Wales). [Holotype 
examined]. 
R. (A.) quadripunctata (Malloch) comb.n. AUSTRALIA (Queensland, Victoria). 
[Holotype examined]. 
KEY TO SPECIES OF THE SUBGENUS AMENIAMIMA 
1 Postorbits entirely bright yellow pollinose and concolorous with rest of the yellow 
head. ¢ surstyli as in Text-fig. 58 . - .  R. argentifera 
— Upper two-thirds of the postorbits silvery white pollinose and contrasting in colour 
with rest of the yellow head. [Genitalia of Jf not examined] : 2 
2 Third abdominal tergite (i.e. apparent second segment) almost completely coven! 
with dense white pollinosity, so that abdomen shows a broad pale transverse sub- 
basal band which strikingly contrasts with remainder of dark abdomen (silvery 
bluish glints visible through the pollinosity in some lights). General body colour 
dark purplish black with very dark brown non-metallic scutellum. [Known only 
from g holotype, 9 may not conform] - : : R. cingulata 
- Third abdominal tergite not so, with only two small niger spots of whitish 
pollinosity with shifting appearance on each side, T3 therefore appearing unicolorous 
with rest of abdomen. General body colour blue-green to deep violet-blue, 
scutellum distinctly metallic . : c : : : : R. quadripunctata 
Subgenus CHRYSORUTILIA Townsend stat. n. 
Chrysorutilia Townsend, 1915 : 23. Type-species: Rutilia formosa Robineau-Desvoidy, 1830, 
by original designation. 
