TACHINIDAE OF AUSTRALIA 31 
apical seta. Scutellum with two pairs of marginal setae (sometimes only the 
basal pair developed and the hind pair not differentiated). Lower calypter very 
broad and rather straight or even slightly concave on its hind margin. Infra- 
squamal hairs present (very minute and placed adjacent to calyptral base, care 
needed to see them). Last section of vein Cu, extremely short, less than half 
as long as m—cu. © without proclinate orbital setae . ; 2 
— Wing with bend of vein M very abruptly angulate (usually forming a ‘sharp angle 
of about 90°) and often with a short M, appendix (Text-figs 76-78). Abdomen 
not dorsoventrally flattened and armed with at least a few very strong setae. 
Abdominal sternites (except sometimes for St5) concealed by ventral ends of 
tergites meeting in the mid line. Two supra-alar setae, a strong anterior one 
and a weak posterior one (sometimes only one sa in Eutherini). Two or three 
post ia setae. Hind tibia with or without pv apical seta. Scutellum with three 
pairs of marginal setae in most forms (fewer sometimes in Cylindromyia and 
occasional specimens of Euthera). Lower calypter slightly or strongly convex 
on its posterior margin. Infrasquamal hairs absent. Last section of Cu, at 
least half as long as m—cu and usually longer than this. Q with meeees orbital 
setae (weak or occasionally absent in Euthera) . : 3 
2 Wing with cell FR; just open or closed at the wing margin, or rich a ee short petiole 
only just distinguishable (Text-fig. 74). Abdomen conspicuously elongate or 
clavate, with some very weakly developed marginal setae on the posterior tergites 
(these recumbent on T4 and T5, usually somewhat erect and stubby on T6). 
One post ia seta present. Second costal sector haired ventrally. 92 without 
externally obvious ovipositor. Eyes of both sexes widely separated, interfrontal 
area very well developed and at least twice as wide as the antenna 
TRICHOPODINI (p. 32) 
-— Wing with cell R; closed well before the margin and with a long petiole (Text-fig. 75). 
Abdomen not long and narrow, usually subovate, usually without any strong 
setae (vestiture almost entirely of hairs). No post ia setae or one (if one present 
this usually very weak). Second costal sector bare ventrally. 92 with obvious 
projecting horny ovipositor or with large complex recurved postabdomen. Eyes 
of both sexes widely separated or meeting in mid line of the frons with consequent 
reduction of the interfrontal area . : PHASIINI (p. 33) 
3 Palpiabsent. Posteroventral declivity of the eee feces a deep and completely 
sclerotized bridge widely separating the base of the abdomen from the hind 
coxae. Abdomen long and narrow (subcylindrical or slightly clavate) and with 
postabdomen exposed, large and recurved. Second costal sector haired ventrally. 
Hind tibia with a strong pu apical seta . : CYLINDROMYIINI (p. 36) 
— Palpi present. Posteroventral declivity of the thorax membranous medially and 
forming only a narrow bridge between the abdominal base and the hind coxae. 
Abdomen not so shaped. Second costal sector bare ventrally. Hind tibia with 
or without pv apical seta : : : 4 
4 Wings colourless. Abdominal Tr ce 2 not excavate. to its hind margin. Face 
without a median ridge and antennae very small (falling far short of epistomal 
margin). Ocellar setae reclinate. Scutellum without discal setae. Two post ia 
setae (widely spaced and anterior one subequal in size to posterior one and standing 
near to transverse suture) (Text-fig. 56). Apex of 2 abdomen forcipate (Text- 
fig. 93). ‘ : LEUCOSTOMATINI (p. 38) 
— Wings with a bold black- brown patient (dark éolont extending along fore border 
| and in two preapical cross-bands of which proximal one is wider than the distal 
one, the cross-bands evanescent posteriorly; alula unusually long and narrow and 
black-brown or mostly so). Face with a broad median vertical keel (sharp on 
its anterior edge) and antennae exceedingly long (reaching to or beyond level of 
epistomal margin). Ocellar setae proclinate. Scutellum nearly always with at 


