IWM. FHORIlJ.K 



lAHl.E ()¥ GENEKA 



I. WmgsfuUY develol>ed i- 



— IVings abseiit. or iiiitch lediued iii sicf aiid veiialioii ; eyes small : 



tibiae tiiitlumt aiiv stioiig preapical setae 1 5 . 



i. Third loiigitudiiial veiii forked near tiic ahex 3. 



— T/iird loiigiliidiiial veiii simple, at inost thickened at apex 6. 



3. Froiii destitiite of setac, costal veiii iiot hristly q. (jeniis Gvmnoi-hok.x, .Macqiunt. 



— Froiil provided vith setae, costal veiii bristly 4. 



4. Aiittrior frontal setae recliiiate 5. 



— Aiiterior fronial setac proclinatc. tibiae Jinthout preapical hrisiles . 10. Genus Aphiochaet.a, Brues. 



5. Tibiae tnithont preapical seiac, ovipositor of femalc hard aiid 



polished 11. Genus .\poceph.\li,s, Coquiilett. 



— Middle tibiae and iisually the other pairs also, ii'ith oiie or more 



strong preapical setae, 01'iposiior retracted, fieshy i . Genus Phoka, Latreille. 



0. Froiii -u'liolly destitHie of sctae, body fialtened, hare i3. Genus Pi.atyphor \, \'errall. 



— Front with setae as iisiial 7. 



7. Middle tibiae i^ith one nr more preapical setae 8. 



— All tibiae harc exccpt fov apical spiirs 10. 



8. Velvei-black species. iniddle tibiae of male ijith a nm' 0/ long setae 



on ihe upfer side 4. Cienus Trineira, Meigen. 



— Not velvet-black, iiiiddle lihiac with not more than Ivo or tltree 



seiae hefore apex u. 



g. Male antennae prolongcd iiito a sleiidcr poini, ;.iith apical arista. 

 Femalc aiitcnnac wiih a slighl foinl ti'here thc arista is inscrted 

 at thc upper corner. SinaUer species i<'iih slender legs . . . 3. Genus Conicera, Meigen. 



— Aiitennac usuallv rouiided in hoth sexcs, stout sfecies 7,'iih strong 



legs 2. Genus Hypocera, Lio}-. 



10. First louiiitiidinal reiu wanting 18. Cienus Ecitomyia, Brues. 



— Firsi longitudiiiaf veiu present as usuul 11. 



11. Aiiterior fronial seiae recliiiatc. hind tibiae friiiged ahovc :,'iih 



hrisiles. ovifosiior of female hard, exseried (>. Genus Mei.aloncha, Brues. 



— .iulcrior froiilal seiae procliiiaie . . 12. 



— Anierior frontal selae ahseiil. hind lihial spurs miniite, K'ings very 



hairy 10. Genus CHONocEPHAi.us.Wandolleck. 



12. Spurs of foiir posterior tibiae i^'ell-developed i3. 



— Spiirs of middle lihiae wanting, iliose of posierior pair muiiiie 14. 



13. Oviposiior of female frolonged, stoiit and thicklv chitiniced. 



neuration of wing normal S. (jenus Pi.astophora, L>rues. 



— Ofiposilor fies/iy and retracied as iisnal. firsi aud Ihird veins 



stroiinfy afproximated, legs veiy stout 11, Genus Synelra, Brues. 



14. IVings wiih foiir liglit vcins. fronl 'u'ith iwo or i/iree rows of 



brisiles 17. Genus Puliciphora, Dalil. 



— T/iree lig/ii veins. four transverse rows of frontal seiae . . . 12. Cjenus Metopina, Macquart. 



i5. Wings present. although rediiced in size 16. 



— Wings eiitirelv ahsenl 21. 



