REVISIONARY CLASSIFICATION OF RUTILIINI 55 
Philippoformosia Townsend, 1927 : 282. Type-species: Philippoformosia splendida Townsend, 
1927 [=townsendi Crosskey, nom. n.], by original designation. Syn. n. 
Habrota Enderlein, 1936 : 399. Type-species: Rutilia foymosa Robineau-Desvoidy, 1830, by 
original designation. [Isogenotypic name with Chrysorutilia Townsend]. 
Zovamsceus Enderlein, 1936: 416. Type-species: Rutilia erichsonit Engel, 1925 [=Dexia 
chersipho Walker, 1849], by original designation. Syn. n. 
Idania Enderlein, 1936 : 408. Type-species: Idania atrox Enderlein, 1936, by original designa- 
tion. Syn. n. 
Formotilia Paramonov, 1968 : 355. [Name published in footnote to generic key: unavailable 
under Article 13 (b) of International Code of Zoological Nomenclature, no fixation of type- 
species. ] 
Diacnosis. Parafrontals pollinose (except /uzona-group and atvox). Epistome not metallic 
(except Juzona-group). Genae with the dilations partly or entirely metallic, without or with 
very thin pollinosity (golden green to blue, except dark brown in atyov). Facial carina 
conspicuously flattened on anterior surface, sides subparallel or slightly divergent ventrally, 
separated from lunula by weak depression. Parafacials haired. 9 without proclinate orbital 
setae. Arista micropubescent. Humeral setae reduced, 2 on outer half of callus only (at most 
only minute hair-like inner humerals developed). Posthumeral setae absent. Post ia setae 
normally one each side, occasionally absent (rarely two in 9). Scutum without supernumerary 
prescutellar setae. Postalar callus with 4-6 strong setae. Suprasquamal ridge thickly haired. 
Scutellum not flattened or at most with only slight flattening at apex; with 4-7 pairs of marginal 
setae (these rarely stiffened); marginal setae preceded by an irregular row of horizontal pre- 
apical setae clearly differentiated from scutellar hair. Haired area of lower part of pteropleuron 
extending well forwards of the posterior stp] seta. One sternopleural seta (o + 1), sometimes 
one or two small wiry anterior sternopleurals developed in 9; rarely sternopleurals quite absent. 
Prosternum haired on anterolateral corners; prosternal membrane haired (hair often long and 
conspicuous). Hind tibia with long regular anterodorsal fringe (no evident ad setae), without 
or with one or two very weak fd setae. Last abdominal tergite ([T5) without median depression, 
convex on upper surface. T3 without median marginal setae (rarely weak setae present in 9) 
and without lateral marginals. T5 with fine erect hair only (sometimes some more strongly 
developed slightly setiform vestiture at apex; irregular erect stubby setae in Juzonag). Sternite 
5 of g with simple rounded lobes. ¢ genitalia with distal membranous part of distiphallus 
shorter than, or at most subequal in length to, the sclerotized proximal part; surstyli much longer 
than wider, sometimes with blunt projection or long tooth anteromedially, always with sharp 
pointed tip that is directed more or less forwards (Text-figs 72-84). [Mainly metallic golden- 
green, coppery, or blue-green forms with banded or spotted abdomen and yellow head ground 
colour, often with white pollinose areas on thorax but these very rarely forming bold discrete 
spots. ] 
DIsTRIBUTION. Widespread throughout Oriental and Australasian regions, the 
distribution including Ceylon, India, Vietnam, Philippines, Timor, Western 
Australia (including Monte Bello Islands), all of eastern Australia and Tasmania, the 
Kei Islands, New Hebrides and Lord Howe Island. 
Discussion. Chrysorutilia is the largest subgenus of Rutilia s.1. and has a wider 
geographical distribution than any other subgenus; it includes some two-fifths of the 
described species (though some of the names accepted as valid might prove to be 
synonyms) and is the only segregate of Rutilia s.1. represented on the mainland of 
Asia. The subgenus is poor in number of species in the Oriental Region, and those 
that do exist in this area appear to be uncommon to judge from the paucity of 
specimens in museum collections; the occurrence of the subgenus in Asia appears 
to be due to dispersal from a centre of evolution in Australia, and the forms found 
