108 R. W. CROSSKEY 



[Note. While this work was in press Mesnil (1975a & c: 1374-1387) published the outlines of 

 a new classification for a large part of the Palaearctic Goniinae in which he recognized two 

 tribes, the Goniini (with 10 included subtribes) and the Eryciini (with 14 included subtribes), 

 and provided subtribal keys. It has not yet been possible to relate this classification to the 

 Oriental fauna, and it will remain difficult to do so until the reproductive habit of all the 

 Oriental genera can be determined.] 



Key to Oriental Tribes of GONIINAE 



1 Pre-alar seta short and weak, usually shorter than the first post ia seta and much 



shorter than the first post dc seta (except in some Ethillini) ..... 2 



- Pre-alar seta moderately or very strong in relation to the size of the other mesonotal 



setae, much longer than the first post ia seta (excepting Bactvomyiella) and usually 

 longer than the first post dc seta ......... 7 



2 Scutellum with three pairs of very strong marginal setae arranged and orientated 



as in Text-fig. 83 (crossed apicals, subapicals very wide apart and standing on the 

 sides of the scutellum, laterals absent). Basal node of R i+5 with a single setula 

 (rather strong) . Two or three post dc setae. Eyes bare. [Parasites of Orthoptera 

 Acridoidea]. . . ACEMYINI (p. no) 



- Scutellum without this arrangement of marginal setae, or if (rarely) with similar 



arrangement then not parasites of Acridoidea and at least one of the other 

 characters cited not fitting. Basal node of i? 4+5 usually with two or more setulae 

 (one in Phytomyptera, one or none in some Blondeliini). Varied complements of 

 post dc setae, often four. Eyes bare or haired. [Not parasites of Orthoptera, 

 excepting Phorocerosoma] .......... 3 



3 Subapical scutellar setae crossing before their apices (typically enclosing the apicals 



as in Text-fig. 79) or obviously converging. Head form not sexually dimorphic, 

 both sexes with broad frons, strong outer vertical setae and proclinate orbital 

 setae. Hind tibia with pd preapical seta (in addition to ad and d preapicals, 

 Text-fig. 14). Second costal sector haired ventrally. Eyes bare or virtually so. 

 Abdominal Ti + 2 not excavate to its hind margin (nearly so in Neoplectops) . 4 



- Subapical scutellar setae subparallel or diverging from each other. Head form not 



so, frons in <$ almost always narrower than in 9 and 5* without outer vertical or 

 proclinate orbital setae (a few exceptions). Hind tibia without pd preapical seta 

 (except in a few Blondeliini) . Second costal sector bare ventrally (except in some 

 Blondeliini). Eyes bare or haired. Abdominal Ti + 2 usually excavate to its 

 hind margin (not in some Blondeliini) ........ 5 



4 Vein R i+S with a series of moderately uniform setulae extending some way along the 



vein from the basal node (at least nearly to r-m and often much beyond it). 

 Forms with both m-cu present (venation as Text-fig. 97) and excavation of 

 abdominal Ti + 2 not extending beyond middle of tergite. SIPHONINI (p. 112) 



- Vein i? 4+5 with a very strong setula on the basal node, either alone or accompanied 



at most by two other much smaller setulae. Forms either without cross-vein 

 m-cu (Phytomyptera) or with the excavation of abdominal Ti + 2 extending 

 virtually to the hind margin of the tergite (Neoplectops) . . NEAERINI (p. in) 



5 Bend of vein M in the form of an open evenly rounded curve or, if slightly abrupt, of 



a widely obtuse angle, always without trace of M 2 appendix or fold (e.g. as Text- 

 fig. 77) . Subapical scutellar setae usually very widely divergent. [Heterogeneous 

 forms, propleuron bare or haired, presternum bare or haired, mid tibia with or 

 without submedian v seta, abdominal Ti + 2 excavate or non-excavate to its 

 hind margin] BLONDELIINI (p. 113) 



- Bend of vein M moderately to very strongly abrupt (Text-figs 103 & 104) and usually 



not forming a widely obtuse angle (M usually changing direction at about 90° at the 

 bend itself), most often provided with an M 2 appendix or fold in the wing surface; 



