1903] ASHMEADi — CYNIPOIDEA l^g 



alutaceous ; antennae rather short, the third jomt a little longer than the fourth ; 

 joints 9-12 twice as long as thick; claws of hind tarsi with a tooth at base 

 beneath (agamous 9 ) . . . . . . Phylloteras Ashmead 



(Type Biorhiza rubinus Gillette.) 

 Scutellum semicircular, bounded by a delicate rim posteriorly, without foveae at 

 base; face smooth, shining, or at the most feebly alutaceous, the mesonotum 

 polished, with traces of furrows anteriorly; antennae somewhat short, the third 

 joint nearly twice as long as the fourth, joints 7-12 scarcely longer than thick; 

 claws of hind tarsi simple ..... Trigonaspis Hartig 



(Type Cynips megapterus Panz.) 



6. P'ront tibiae outwardly at apex normal, never prolonged into a large spined 

 process, at most only slightly dilated ....... 7 



Front tibiae outwardly at apex prolonged into a large, spined process . 10 



7. Scutellum laterally immarginal, %vithoiit a frenum; face sometimes with a 

 ridge or carina between the antennae ....... 8 



Scutellum laterally margined, or loith a distinct frenum ; face unthout a ridge 

 or carina between the antennae. 



Antennae 14-jointed, the third joint scarcely longer than the fourth, joints 

 11-14 hardly longer than wide; head and thorax shining, but the former 

 more or less coriaceous or alutaceous ; scutellum without distinct foveae 

 at base, although there is a slight transverse grooved line ; tarsi shorter 

 than tibiae ; claws with a tooth within (agamous $ ) 



Xanthoteras Ashmead 

 (Type Biorhiza forticornis Walsh.) 



8. Face with a distinct median ridge or carina between the antennae ; scutellum 

 large, lunate, or semicircular; antennae 14-jointed; hind tarsi as long as their 

 tibiae, the claws simple without a tooth at base beneath (agamous $ ) 



Biorhiza Westwood 



(Type Cynips aptera Linne.) 



Face without a distinct median ridge or carina between the antennae ; scutellum 



rounded, convex, or a little longer than wide, and separated from the mesonotum 



by a delicate grooved line 



Antennae 12- or 13-jointecl ........ 9 



Antennae 14-jointed. 



Third joint of antennae long but much shorter than 4 and 5 united, 

 joints 11-13 scarcely twice as long as thick, the last joint hardly as 

 long as the two preceding united ; head and thorax alutaceous or 

 shagreened, the pleura finely striated ; scutellum small, highly con- 

 vex, with a distinct transverse fovea at base ; hind tarsi longer than 



