TACHINIDAE OF AUSTRALIA 77 



Vibrissae usually inserted about on a level with the epistomal margin (if above then 

 other character not fully fitting or doubtfully so) . Dorsocentral setae sometimes 

 3 + 4 but other complements occurring. Inner margin of lower calypter usually 

 not closely following edge of scutellum, inner posterior angle of the calypter 

 usually rather rounded. ^ without a regular close-set hind tibial fringe and 

 without abdominal hair fascicles ...... ERYCIINI (p. 96) 



Scutellum with three pairs of very strong setae in which the apical setae are crossed 

 and horizontal and the subapical setae are very wide apart and inserted well 

 forwards on the sides of the scutellum (Text-fig. 68) ; no lateral scutellar setae. 

 Basal node of i? 4+5 with one strong setula. Parafrontals in both sexes with a 

 long series of strong proclinate orbital setae. Antenna with the anterior tip of 

 the third segment forming a sharp point. Bend of vein M widely obtuse, M t 

 unusually straight and cell R 5 normally closed at the wing marginor short petiolate 

 (Text-fig. 88). Second costal sector haired ventrally. 2 + 3 dc setae. 

 [Parasites of Orthoptera Acridoidea] ACEMYINI (p. 78) 



Scutellum almost always with different conformation of setae, lateral setae usually 

 present; if scutellar bristling similar then other characters not fitting. Basal 

 node of R i+i with more than one isolated setula (except in Neaerini and a few 

 Blondeliini). Parafrontals with the usual two pairs of proclinate orbital setae 

 in $, without or with two pairs in $. Antenna not noticeably mucronate, outer 

 tip of last segment usually rounded. Wing venation of different form (slightly 

 similar in some Blondeliini). Second costal sector haired or bare below. Varied 

 complements of dc setae. [Not parasites of Orthoptera Acridoidea, except 

 possibly Phorocerosoma] .......... 8 



Subapical scutellar setae strongly convergent or crossing at their apices 

 (Text-figs 67 & 69). Second costal sector haired below (third sector also usually 

 haired ventrally on most of its length). Costal margin conspicuously broken 

 and incised at the apex of the subcosta (Sc) (Text-figs 86 & 89). Abdominal 

 Ti + 2 not excavate to its hind margin ....... 9 



Subapical scutellar setae parallel to each other or diverging (e.g. as in Text-fig. 71). 

 Second costal sector bare below (except in Lixophaga). Costal margin 

 inconspicuously broken and scarcely at all incised at the apex of Sc. Abdominal 

 Ti -f 2 usually excavate to its hind margin (not in some Blondeliini or in 

 Hillomyia) ............ 10 



Abdomen without discal setae on any tergite. Propleuron bare. Head not sexually 

 dimorphic, $ with two pairs of proclinate orbital setae and with outer vertical 

 setae like the $. Vein R t+5 extensively setulose and i? x usually also partly or 

 wholly setulose. Eyes bare. Hind tibia with three dorsal preapical setae 

 (pd preapical present in addition to the usual ad and d preapicals) (Text-fig 18) 



SIPHONINI (p. 80) 



Abdomen with strong erect discal setae on tergites 3 to 5. Propleuron haired. 

 Head sexually dimorphic, frons much narrower in $ than ^ an( i male head 

 without proclinate orbital setae or definite outer vertical setae. Vein i? 4+5 with 

 one setula only or a small tuft of setulae confined to the basal node, R x bare. 

 Eyes haired (but hairing very short and inconspicuous in some forms). Hind 

 tibia with two dorsal preapical setae (the normal ad and d preapicals) (Text-fig. 19) 



NEAERINI (p. 78) 



Bend of vein M in the form of an open evenly rounded curve (as in Text-fig. 85) or 

 if slightly abrupt then forming a widely obtuse angle, always without trace of an 

 M 2 appendix or fold. Propleuron bare or haired. Infrasquamal hairs present 

 or absent. Abdominal Ti + 2 excavate or non-excavate to its hind margin. 

 Mid tibia with or without a submedian v seta . . BLONDELIINI (p. 81) 



Bend of vein M abrupt and not forming a widely obtuse angle [M changing direction 

 usually at about 90 at the actual bend), often provided with an M 2 appendix or 



