72 Ke) We ‘GROSSE, 
or four stp] setae (2 + 1 or 3 + 1); infrasquamal hairs present; pteropleural seta present or 
absent; mid tibia without a v seta in the g, with a v seta in the 9 [this sexual difference 
apparently constant to judge from limited material seen]; hind coxa bare posterodorsally; 
hind tibia without pd preapical seta and without pv apical seta; wing with only a few weak 
hairs on basal node of R,,;, veins otherwise bare; cell R; open to the wing margin; bend of 
M rather abruptly angulate but without M, spur or fold; abdomen of both sexes unusual, 
in ¢ To and T7 + 8 exposed and forming a conspicuous vertical declivity at the end of the 
abdomen, and in 9 postabdomen strongly developed and recurved with elaborately modified 
Ovipositor (sometimes resembling that of some Phasiinae such as Cylindromyiini); abdominal 
sternites exposed. 
The strange genus Awustralotachina Curran does not completely conform with the 
characters cited above, as it has sparse black hairs on the upper half of the occiput, 
has four post dc setae, the ¢ has a submedian v seta on the mid tibia, there is an 
extra pair of scutellar setae, and the bend of vein M is rather gently rounded, but 
it seems nevertheless best to place it with the parerigonines until its affinities can 
be more reliably determined; its head profile is shown in Text-fig. 42. 
KEY TO AUSTRALIAN GENERA OF PARERIGONINI 
1 Scutellum with three pairs of very strong setae (basals, subapicals and crossed 
apicals). o + 2zasetae. Propleuron usually haired. 3 + 3 dcsetae sili = 
weak fourth prst dc seta) : 2 
— Scutellum with four pairs of strong setae G sa ue enormous laterals presente in 
addition to basals, subapicals and crossed apicals). o + 3 ta setae (a weak 
hair-like post ia seta present in front of the main two). Propleuron bare. 3 + 4 
dc setae : : : 5 : . AUSTRALOTACHINA Curran 
Abdomen with Tr 3 and T3 normal, ‘GE fused, with excavation of Tr + 2 
reaching the hind margin. Barette haired on anterior half. Posterior thoracic 
spiracle not exceptionally large, about as long as the barette or only a little more. 
Both thoracic spiracles brown or blackish. Legs and all thoracic hair black 5 3 
— Abdomen with Tr + 2 and T3 fused into a single very large composite tergite in 
which the excavation is confined to the basal part. Barette bare. Posterior 
thoracic spiracle exceptionally large, very much longer than the barette. Both 
thoracic spiracles pale yellowish. Legs reddish yellow (except for apical darkening 
of the tarsi) and hair of sides of the thorax golden orange or yellow 
PYGIDIMYIA Crosskey 
3 Eyesdensely and conspicuously hairy. Epistome usually only moderately prominent, 
vibrassae inserted above the epistomal margin by a distance not exceeding the 
length of the second antennalsegment . ; : : LEVERELLA Baranov 
— Eyes bare or almost so (at most only with very sparse inconspicuous and microscopic 
hairs). Epistome strongly projecting, subnasute, vibrissae inserted above the 
epistomal margin by a distance exceeding the length of the second antennal 
segment (Text-fig. 46) . : : : . : ; : : ZITA Curran 
Nn 
Tribe LINNAEMYINI 
The Linnaemyini include forms that are superficially very like the Tachinini 
but differ by having the dorsal surface of the hind coxa bare. All the Australian 
forms have the eyes densely haired, and this helps to separate them at a glance 
