ASIIMKAI) : CLASSIFICATION OF TIIF, CHALCII) FLIES 263 



IG. Mcsoiiotum closuly, distinctly, uiiil)ilicately imnctiite 17 



Mesoiiotuin iwl umbilifatcly inim-tate, litlKT smootli or nearly, or shaj^reuiii'd or finely, re-^nlarly sculp- 

 tured 0(; 



17. First joint of the llagellum long, as long as the scape or longer IS 



First joint of the flagellum not especially long, always much shorter than the scape IS) 



18. Head with a deep antennal furrow, the front ocellus placed within tlie furrow. 



? Known to me in ? sex only Bephrata Canici-on. 



? Known to me in 9 sex only Aximogastra Ashmea<l. 



19. Mesonotum tvithout or with incomplete furrows. 28 



Mesonotum. H'(7/i. distinct, complete furrows. 



Head sometimes with a dec]) antennal furrow, but the front ocellus is never situated in the fur- 

 row 20 



Head with a deep antennal furrow, the front ocellus always placed in the furrow at its apex. 



Prodecatoma Ash mead. 



20. Marginal vein always distinctly longer than the stigmal vein, the postraarginal vein well developed, 



sometimes very long, always longer than the stigmal 21 



Marginal vein short, not or scarcely longer than the stigmal vein, usually shorter, the postmargiiuil 

 vein not well developed, not longer than the stigmal 27 



21. Hind tibi;e with 2 apical spurs 22 



Hind tibifc with 1 apical spur Phylloxeroxenus .Vshmead. 



22. Postraarginal vein only a little longer than the stigmal vein 23 



Postmarginal vein very long, fully twice as long (or longer) as the stigmal vi'in 2.5 



23. Marginal vein always distinctly longer than the stigmal vein 24 



Marginal vein only a little longer than the stigmal Eurytomocharis Ashmead. 



24. Funicle 5-jointed, the joints at apex excised above and pedicellate with long, whorled hairs ; body of 



abdomen rather small, subovate, the petiole usually longer than the hind coxa-, the fourth segment, 

 counting the petiole as the first, the longest Eurytoma Illiger. 



25. Scape of autcnu;e long, with a tooth or tubercle at apex beneath ; joints of funicle long, slightly con- 



tracted at the middle, each joint with two whorls of long bristles Eudoxinna ^\ alk. 



26. Marginal vein slender, at least one and a half times as long as the stigmal vein, the postmarginal vein 



not longer than the stigmal Xanthosoma Aslim. 



Marginal vein rather stout, not longer than the stigmal vein ; funicle 4-jointed, the joints oval, briefly 

 petiolate at apex, with long, sparse hairs ; abdomen small, oval, the petiole about twice as long as 

 thick ; dorsal segment 2-4 subeiiual Systole A\'alk. 



27. Funicle 4-jointed, the joints excised at apex above, the basal or thickened portion about twice as long- 



as thick, with long hairs above; abdomen small, globose, the petiole rngulosc, the fourth segment the 



longest Systolodes Ashmead. 



Funicle 4-jointed, the joints briefly pedunculate at ai)ex, with sparse, long, irregidar liaii-s ; body of 

 abdomen oval, the petiole short, stout, the luurtb scununt the largest Bruchophagus .Vsbnuad. 



28. Head with a deep antennal furrow Decatomidea .Vshmead. 



TuiitF, IV. RUej/iiii. 

 Ill tliis trilie tlie nntciiniu are aliki-, or verv similar, in both se.xt's and 13-jointed, 

 with lii'u or three ring-joints ; they are never 12-jointe(-l or less as in the other tribes. 



