
TACHINIDAE OF AUSTRALIA 35 
abdominal base, posteroventral declivity of the thorax membranous medially or more weakly 
sclerotized medially than elsewhere; abdomen rounded, subovate or subconical and usually 
conspicuously flattened dorsoventrally; T1 + 2 excavate only at extreme base (sometimes 
virtually no excavation); abdominal bristling often weak or absent; ¢ hypopygium recurved 
under abdomen, 2 ovipositor usually prominent and piercer-like; sternites fully exposed. 
KEy TO AUSTRALIAN GENERA OF PHASIINI 
1 Femora armed on half or more of their length with stubby black spinules on av and 
pu surfaces. Pteropleuron with a moderately strong isolated pteropleural seta. 
Vibrissae strong . : .  EFFTAYLORIA Malloch 
— Femora without such spinules, ‘yestiture of the ventral surface entirely hair-like. 
Pteropleuron haired and without a pteropleural seta (at most only one of the 
uppermost hairs longer and stronger than the others). Vibrissae hair-like or at 
most only weakly differentiated from peristomal vestiture . ‘ 2 
2 Eyes of both sexes very strongly approximated or completely meeting in the mid- 
line of the frons, interfrontal area obliterated medially or if distinguishable 
distinctly narrower at mid point than third antennal segment. Upper eye facets 
in both sexes sometimes much enlarged compared to lowermost facets (reaching 
nearly the size of an ocellus). Antennae small, third segment conspicuously less 
than twice as long as second segment and falling short of epistomal margin by a 
distance as great as its own length . : : . ALOPHORA Robineau-Desvoidy 
— Eyes widely separated in both sexes, interfrontal area broad and at least nearly 
twice the width of the third antennal segment. Eye facets of both sexes of 
almost uniform small size. Antennae moderately large, third segment conspi- 
cuously more than twice as long as second segment and falling short of epistomal 
margin by much less than its own length. ; : : BESSERIOIDES Curran 
Kry To AUSTRALIAN SUBGENERA OF ALOPHORA 
1 Lower parafrontals with some fine hairing between the main frontal row of inter- 
mixed fine setae and hairs and the eye. Wing with petiole of cell R; conspicuously 
shorter than m—cu and less than twice as long as y-m. Mesonotum with broad 
black vittae contrasting with paler greyish or sometimes partly golden pollinose 
areas (either four separated vittae or the inner pair merged into a generally dark 
median area). Scutellum with two pairs of marginal setae (basals and apicals) . 2 
— Lower parafrontals completely bare between the main frontal row and the eye 
(frontal row may consist of an admixture of fine setae and long hairs standing 
very slightly out of line with each other but essentially forming one main row of 
vestiture). Wing with petiole of cell R; very long, at least as long as m—cu and 
more than twice as long as vm (except in A. hippobosca). Mesonotum rather 
uniformly black and shining, or if partially paler pollinose then not distinctly 
vittate. Scutellum with either one (basal) pair of setae or with two pairs . : 3 
2 Epistome distinctly projecting, curving forwards from the facial region and the 
facial profile therefore distinctly concave . . subgenus ALOPHORELLA Townsend 
— Epistome not at all projecting, in the same straight plane as the face when seen in 
profile (fig. 3 in Malloch, 1929a) : Alophora nigrisquama (subgenus uncertain) 
3 Scutellum with two pairs of marginal setae (basals and apicals), and with uniform 
fine semi-recumbent hairing on the whole upper surface. Postscutellum evenly 
rounded and not, or only just, visible when fly viewed from directly above 
(Text-fig. 66). @ thorax entirely without flattened lanceolate or scale-like hairs 
or setae. Scutellum concolorous dark brown or black when seen from any angle, 
