ASHMEAD : CLASSIFICATION OF THE CIIALrll) FLIES :>()7 



Head transversely broad, always lenticular, the scrolies short, the piinctures large, thimble-like ; hind 

 wings with the costal cell usually extending to the booklets. 



Marginal vein rarely short, at least longer than thick, and usually much longer ; mesonotum 



smooth, impunctate, or at most shagreened G8 



Marginal vein very short, punctiform, not or scarcely longer than thick ; mesonotum punctate. 

 Mesonotum with the punctuation unlike that of the head, the punctures less dense and 



the surface finely coriaceous ; postmarginal and stigmal veins short, subequal G7 



Mesonotum with the punctuation similar to that of the head ; jiostmarginal vein very short 

 or subobsolete (rarely long), the stigmal vein long. 



Scape normal, without a leaf-like expansion beneath. 

 Punctures on head and thorax coarse and dense. 



Mesonotum very short, only about half the length of the scutellum ; post- 

 marginal vein usually as long as the stigmal ; fiagelluni long, with long 



sparse hairs, not arranged in half whorls Chalcaspis Howard. 



Mesonotum at least as long as the scutellum or very nearly ; postmarginal 

 vein much shorter than the stigmal ; (lagellum with funicle joints sub- 

 excised at apex, with half whorls of long hairs. 



Bothriothorax Ratzeburg. 

 Punctures on hea<l and thorax small and less dense ; mesonotum a little 



longer than the scutellum Aratus Howard. 



67. Vertex and face broad, finely shagreened, and sparsely punctate ; scrobes deep, semicircular. 



Pedicel obconical, longer than thick at apex, the flagellum subclavate, the joints, after the first, 



wider than long Pentelicus Howard. 



Pedicel very minute, the llagillum liliforni, i)il(ise, the joints suheciuate, about two and one half 



times as long as thick 31epyrus I lowaid. 



Vertex and face very narrow, or nut broad. 



Head with coarse thimble-like punctures, the thorax smooth, impunctate ; tlagellum short, 

 thick, filiform, clothed with a dense .short pubescence, the joints wider than long. 



.ffinasius Walker. 

 Head smooth without coarse thiinl)U-like punc-liires. at the most with some spai-se punctures 

 on the vertex ; (higclhim long, subclavate, not tliiik and only sparsely pubescent. 



Euryrhopalus Howard. 



()8. Marginal vein rather long, rarely shorter than the stigmal G'J 



Marginal vein rarely more than twice as long as thick ; head with rather sparse, scattered, unibilieate 

 punctures, the scutellum a little longer than the mesonotum. 



Head not wider than the thorax between the wings ; llagelUun not short, filiform, and clothed 

 with rathershortspar.se hairs, the funicle joints longer than wide, the first a little the longest. 



Hemencyrtus .\shniea<l. 

 Head wider than the thorax between the wings; llagellum short, strongly clavate, as in the 

 female; the club large and longer than the funicle, tin- joints of the latli-r minute, annular. 



Coccophoctonus .Vslmuad. 

 69. Mesonotum as long as the scutellum or nearly, rarely somewhat shorter, the surface finely shagreened, 

 at most with some feebly defined .spai-se punctures ; marginal vein shorter tlian the stigmal, the lat- 

 ter not very short ; flagellum filiform, i)ilose, the funicle joinis ahmit twice as long as thick ; eyes 

 bare Phaenodiscus Fiirster. 



