ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 269 



Antennae 10-jointed, the third joint very long, as long as all of the other joints united. 



Lirata Cameron (type L. luteogaster Cam.). 



20. Thorax not pubescent, the scutellum always longitudinally striate Kapala Cameron 



(type EucJiarls fuscata Fabr.). 

 Thorax clothed with a fine pubescence, the scutellum smooth, not longitudinally striate, the processes 



smooth to their apices, where they are transversely serrate Lasiokapala Ashmead 



(type L. serrafa Ashm.). 



21. Scutellum spined, bidentate or produced into long processes extending over the scutellum 22 



Scutellum normal, simple 23 



22. Scutellum bidendate or produced into long processes that extend over the abdomen 28 



Scutellum produced into a spine-like process. 



Antennae never moi-e than 13-jointed 29 



Antennae 18-jointed Saccharissa Kirby. 



23. Antenna; 10-13-johited . 24 



Antennae 22-jointed Eucharissa Westwood. 



24. Antennae simple, without branches 25 



Antennae ramose or with branches 28 



25. Flagellar joints moniliform 26 



Flagellar joints cylindrical, not moniliform 27 



26. Abdomen compressed, ascending Eucharis Latreille. 



Abdomen neither compressed nor ascending. 



First joint of tarsi much thickened Tricoryna Kirby. 



First joint of tarsi very long, slender Metagea Kirby. 



27. AiTtennae 10-11-jointed. 



Petiole of abdomen abruptly enlarged at apex ; thorax smooth Pseudometagea Ashmead. 



Petiole of abdomen normal, long, cylindrical ; thorax rugose Psilogaster Blanchard. 



Antennae 13-jointed, rather short ; thorax closely punctate, the pai-apsidal furrows distinct ; right man- 

 dible with two teeth within, the left with one tooth within Orasema Cameron. 



28. Scutellum spined, bidentate or produced into long processes that extend over the abdomen 29 



Scutellum normal, unarmed. 



Antennffi with 4 branches ; wings hyaline Pseudochalcura Ashmead. 



Antennae with more than four branches ; wings with a substigmal cloud or fascia. 



Chalcura Kirby. 



29. Scutellum not conically produced into a spine 30 



Scutellum conically produced into a spine Destefania Dalla Torre. 



30. Scutellum Avitli the processes very long, usually as long as the abdomen and sometimes very broad, 



forming a shield over the abdomen 32 



Scutellum bidentate, the teeth never very long. 



Metathorax armed with strong lateral projections or teeth 32 



Metathorax unarmed, without teeth. 



A hump-like elevation above the metapleura Stibula Spinola. 



No hump-like elevation above the metapleura Schizaspidia Westwood. 



31. Metathoracic processes curving downwards ; antennae simple Lophyrocera Cameron. 



Metathoracic processes consisting of two horizontal teeth ; antennae with 9 branches. 



Tetramelia Kirby. 



