86 
R. W. CROSSKEY 
3 +3 0r 3+ 4 dcsetae. Wing with cell R,; not closed before the wing margin, at 
least narrowly open. Distance on vein M from bend to m—cu much less than 
that from m—cu to v-m (except in one species of Stomatomyia). Scutellum with 
a pair of preapical setae. Humeral callus with three or four setae. Eyes bare 
or haired . g 5 ; : : : : 3 
Abdomen with Tr + 2 eee to its hind meee Vein R, setulose. Fore tibia 
with two pu setae. Propleuron bare. Scutellum with strong upwardly directed 
apical setae. Upper occiput without black setulae behind the postocular row. 
Abdomen with conspicuous white-pollinose bands on T3 to T5 . CHAETORIA Becker 
Abdomen with excavation of Tr + 2 not reaching the hind margin of the tergite. 
Vein R, bare. Fore tibia with one pu seta. Propleuron with a few long white 
hairs [careful examination needed]. Apical scutellar setae almost absent, 
represented by a pair of fine hairs. Upper occiput with a few fine black setulae 
behind the postocular row. Abdomen uniformly black and rather shining 
HILLOMYIA Crosskey 
3 + 3 dcsetae. Last section of vein Cu, (from m—cu to wing margin) very long, 
more than half as long as the penultimate section and very much longer than 
m-—cu; m-—cu joining Cu, at an oblique angle. Apical scutellar setae directed 
very strongly upwards. Costal spine well developed, usually very easily dis- 
tinguishable from marginal costal setulae and as long as cross-vein y—m or longer . 4 
3 + 4 dc setae (except in one unidentified sp. from Northern Territory). Last 
section of vein Cu, normal, shorter than or subequal in length to m—cu and 
much less than half as long as the penultimate section; m—cu joining Cu, approxi- 
mately at a right-angle. Apical scutellar setae nearly horizontal or directed 
only slightly upwards (except in some Evxorista). Costal spine not developed, 
indistinguishable from marginal costal setulae 2 ‘ : 
Abdomen without discal setae on intermediate tergites (T3 soe T4). Palpi well 
developed. @ with upper pair of reclinate orbital setae showing at most only a 
slight outward twist towards the eyes. Apical scutellar setae weak, very much 
smaller than the lateral scutellar setae. 4 with or without outer vertical setae, 
if present then obviously weaker than ocellar setae 
STOMATOMYIA Brauer & Bergenstamm 
Abdomen with two or more very strong erect discal setae on each intermediate 
tergite, accompanied by numerous smaller stiff erect setulae. Palpi absent or 
almost so (at most represented by a minute papilla bearing a long apical hair) 
(well developed in an undescribed species). @ with the upper pair of reclinate 
orbital setae enormously strong and directed outwards over the eyes (simulating 
prevertical setae). Apical scutellar setae extremely strong, almost as large as 
lateral scutellar setae. G with very strong outer vertical setae subequal in size 
to ocellar setae . : : : SPOGGOSIA Rondani* 
Facial ridges armed with strong downeurved setae on most of their height. Eyes 
densely haired. Robust forms with short inconspicuous M, fold extending 
from bend of vein M; hypopygium of ¢ never with golden hair : 6 
Facial ridges mainly bare, only with weak hairs and setulae immediately abeee the 
vibrissae which extend at most only for one-third of the height of the facial 
ridges. Eyes bare or haired. More slender forms with rather narrow tapering 
abdomen and with a long conspicuous M, fold in the wing extending from the 
bend of M; ¢ often with dense golden hair on the hypopygium (visible in situ) 
EXORISTA Meigen 
3 + 4 dc setae. Ocellar setae absent or very weak and wiry. Frons and thoracic 
dorsum not golden : ; F z : : : : : . : 7 
3 + 3 dc setae (? aberrant). Ocellar setae very strong (much larger than upper pair 
of reclinate orbital setae). Frons and thoracic dorsum conspicuously golden to 
naked eye . : : : : ; : : Undetermined genus & species 
On 
* See Appendix, p. 209. 





