


REVISIONARY CLASSIFICATION OF RUTILIINI 51 
divisions. Although I have not used this feature in the subgeneric diagnoses, it is 
true of all material that I have seen that the second and third costal sectors in 
simplex are subequal in length whereas in all other Rwtzlza the second sector is ob- 
viously appreciably shorter and often very much shorter than the third sector; 
certainly this is one of the characters along with the others already alluded to that 
make simplex a very atypical Rutilia, and one best placed in a separate subgenus. 
INCLUDED SPECIES 
Rutilia (Neorutilia) simplex Malloch. AusTRALIA (New South Wales, Queens- 
land, Victoria). [Holotype examined]. 
Subgenus AMENIAMIMA subéen. n. 
Type-species: Rutilia argentifera Bigot, 1874. 
Diacnosis. Parafrontals thickly pollinose. Epistome not metallic, genal dilations thickly 
pollinose. Facial carina flattened on anterior surface, sides subparallel or slightly widened near 
base of third antennal segment, not separated from lunula by distinct depression; epistome 
rather strongly prominent. Parafacials bare. 9 without proclinate orbital setae or with one 
pair. Arista pubescent. Humeral callus with 3-4 setae, innermost one well developed 
(especially in 9). Posthumeral setae usually absent in $ or one distinguishable from hair near 
inner edge of humeral callus, 2-4 rather strong but irregular in @ (if more than two then one of 
the ph standing near to presutural seta). One or two post ia setae. Scutum without super- 
numerary prescutellar setae. Postalar callus with 4-5 strong setae. Suprasquamal ridge 
bare. Scutellum not flattened, dorsal surface evenly convex; with 3-6 pairs of marginal setae 
(these not stiffened) ; marginal setae preceded by irregular row of distinct preapical setae (very 
well differentiated from scutellar hairing). Haired area of lower part of pteropleuron extending 
well forwards of the posterior stpl seta. Normally two sternopleural setae (1 + 1), anterior 
one weak in f and sometimes not differentiated in this sex (aberrant 2? specimen seen with doubled 
posterior stpl). Prosternum and prosternal membrane bare. Hind tibia without definite 
anterodorsal fringe and with one submedian ad seta (except in cingulata § which has moderately 
developed regular ad fringe), with one or two fd setae. Last abdominal tergite (T5) with a 
very small median apical depression in $ (not longer than half tergite length at most) and 
without any definite apical depression in 9. T3 without median marginal setae (occasionally 
a few developed in 2) and with lateral marginal setae. T5 with a transverse row of long strong 
erect setae on apical half, sometimes whole posterior half of T5 in $ bristled with many very 
long strong irregularly arranged setae. Surstyli of $ genitalia in form of broad lobes (Text-fig. 
58). [Bright green, cupreous, or blue to purplish black forms with bright orange-yellow heads, 
and discrete bold white pollinose spots on thorax and abdomen, showing strong resemblance to 
calliphorid flies of genus Amenia Robineau-Desvoidy]. 
DistTRIBUTION. Australia only, from Victoria to Queensland (not seen from 
Western Australia, South Australia, or Tasmania). 
Discussion. The new subgenus Ameniamima is here erected for a small group 
of eastern Australian species of Rutzlia s.1. which show a quite remarkable convergent 
resemblance in body form, colour and pattern, to flies of the Australian genus 
Amenia Robineau-Desvoidy (Calliphoridae). Four nominal species of this group 
have been described, but each is known from only very little material and it is not 
certain that all four names actually denote distinct species; one is here placed as a 
new synonym. 
