128 R. W. CROSSKEY 



probably to be regarded as congeneric, or at least as phyletically very closely allied 

 (for example Pujolina and Enhygia with two pairs of reclinate orbital setae and 

 Blepharipa with one pair). 

 The Oriental Sturmiini possess the following main features in common. 



Head with one or more pairs of reclinate orbital setae in both sexes. Ocellar setae proclinate 

 or absent. Gena as wide as or wider than the profrons. Vibrissae inserted above the level 

 of the epistomal margin (very slightly so in a few forms, not at all in $ Isosturmia). Frontal 

 setae always more or less inclinate. Humeral callus with four setae of which the main three 

 stand in line (anteriormost fourth seta occasionally undeveloped, middle seta of the three 

 set very slightly forwards in Parapales). 3 + 4 dc setae. Pre-alar seta long and strong, 

 longer than either the first post ia or the first post dc seta. Prosternum haired or setulose 

 (except in Blepharella). Propleuron bare. Scutellum with lateral setae (except in Tritaxys). 

 Wing veins bare except for one or more small setulae on basal node of i? 4 + s . Cell R h open. 

 Second costal sector bare ventrally. Mid tibia with a submedian v seta (sometimes weak, 

 occasionally absent in Cadurcia). Hind coxa bare posterodorsally. Hind tibia without pd 

 preapical seta, and with a well developed ad fringe (specially well formed in males of many 

 forms). Inner margin of lower calypter abutting closely against the scutellar margin and with 

 rather sharply formed inner posterior angle. Abdomen with Ti + 2 excavate to its hind 

 margin. 



In a preliminary definition of the Sturmiini given earlier (Crosskey, 1967ft : 39) 

 it was stated that the arista is only thickened basally. This is true of most Sturmiini, 

 but it should be noted that it is not true of Tritaxys (a genus currently placed in 

 Sturmiini following Mesnil but which is probably a close afhne of the Goniini) ; 

 in Tritaxys the arista is very much thickened on almost all its length. 



Comment should be made on a few minor disparities between the genera here 

 included in Sturmiini and those included in my earlier key (Crosskey, 1967ft : 40-41). 

 Firstly, Pseudoperichaeta Brauer & Bergenstamm has more the facies of Eryciini 

 than of Sturmiini and it is accordingly now treated in the former tribe. Secondly, 

 the genus Thelairosoma Villeneuve: this was included in the 1967 key because 

 of the existence of Mesnil's subgenus Thelairodrino in the Oriental Region. The 

 latter has a typical sturmiine facies, and does not convincingly suggest that it is 

 rightly placed within Thelairosoma (in which, for example, the humeral callus has 

 three strong setae standing in a triangle and in which the facies is non-Sturmiine). 

 It is therefore here preferred to treat Thelairodrino as a genus (stat. n.). True 

 Thelairosoma (type-species fumosum Villeneuve from Africa) is not represented, 

 on present evidence at least, in the Oriental area. Thirdly, the genus Cadurcia: 

 this was omitted from Sturmiini in the previous key (see note, p. 39 in that paper) 

 but on reconsideration it appears best to retain Cadurcia in Sturmiini. Fourthly, 

 the genus Pexopsis: this sturmiine genus was omitted from the earlier key as I 

 was unaware that the genus occurred in the Oriental area. Now it is included. 



Members of the Sturmiini attack a very wide range of macrolepidopterous hosts 

 and occasionally larval sawflies. There are very few records as yet of Oriental 

 sturmiines parasitizing Hymenoptera, but Palexorista species are recorded as 

 attacking Tenthredinoidea in northern India and Pakistan. 



