Sept., 1913] Melander: Synopsis of Diptera. 247 



Ocelli placed on the vertex, the front not produced ; arista short-pubescent 

 or bare ; wings at most with small dark spots 3. 



3. Third antennal joint ovate but with a sharpened end, the arista somewhat 



thickened; two scutellar bristles. (Europe, Asia, North America.; 



Cerodonta Rondani. 



Third antennal joint not ending in a blunt point; four scutellar bristles 



present 4. 



4. Cheeks but one sixth the eye-height ; two fronto-orbitals ; face strongly- 



convex ; antennae scarcely one sixth as long as the head ; vibrissae 

 inserted distinctly above the front border of the oral margin. (North 



America.) Hemeromyia Coquillett. 



Cheeks broader; three or more fronto-orbitals; face not convex 5. 



5. Costa extending to the fourth vein, which is as strong as the third; cheeks 



receding; wings unspotted; femora not thickened; chaetotaxy vari- 

 able 6. 



Costa extending to third vein only S. 



6. Posterior crossvein wanting; second, third and fourth veins close together, 



ending before the tip of the wing, the fifth vein greatly diverging 



from the fourth. (North America.) Antineura n. g. 



Posterior crossvein present; the fourth vein ending beyond the tip of the 

 wing, the fifth vein not greatly diverging 7. 



7. Ovipositor wedge-shaped, short. (Europe, Asia, Australia, Africa, North 



America.) Agromyza Fallen. 



Ovipositor tube-like, elongate. (Europe, North AmericaL.) .Liriomyza Mik. 



8. Anterior crossvein situated near the base of the wing, the posterior cross- 



vein wanting, or else very close to the anterior ; fourth and fifth 

 veins weak, the third vein ending far before the wing-tip ; auxiliary 



vein usually parallel with the first vein 9. 



Anterior crossvein situated nearly opposite the end of the first vein ; pos- 

 terior crossvein present, and always some distance from the anterior; 

 third vein ending near the wing-tip, the fourth and fifth veins not 

 weaker than the second and third 10. 



9. Posterior crossvein entirely wanting. (Europe, Asia, Africa, North America.) 



Phytomyca Fallen. 

 Posterior crossvein present, the discal cell minute. (Europe, North America.) 



Napomysa Haliday. 



10. Hind femora more or less incrassate ; vibrissal angle of cheeks prominent; 



lower occiput reaching forward and bristly ; wings usually spotted, at 



least at the end of the first vein 11. 



Hind femora not thickened ; cheeks receding, the occiput descending 

 straight down; wings not spotted. (Europe, Africa, North America.) 



Domomyza Rondani. 



J I. Mesopleurse not hairy; postverticals strong; four or five dorsocentrals; 



two intra-alars ; no preapical tibial spurs ; femora yellow with pre- 



apical spot. (Europe, North America.) Odinia Desvoidy. 



