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 x extremely short, less than half 

 as long as m-cn. 2 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 AT 2 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 Enthera). Lower calypter slightly or strongly convex 

 on its posterior margin. Infrasquamal hairs absent. Last section of Cu x at 

 least half as long as m-cu and usually longer than this. 2 with proclinate orbital 

 setae (weak or occasionally absent in Euthera) ....... 3 



Wing with cell f? B just open or closed at the wing margin, or with a very 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. 2 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 b 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. 2 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) 



Palpi absent. Posteroventral declivity of the thorax forming 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 pv 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 



Wings colourless. Abdominal Ti -\- 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 pattern (dark colour 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 



