SATROMYZTDvE. 123 



28. Wing- markings radiating 29 



Wing-markings not radiating. .... Tephritis Latreiile. 



20. Tlie wliole or nearly the wliole surface of tlie wing witli iinicolorous 

 reticulation. ....... Euaresta Loew. 



A star-shaped black picture at the apex of the wing, the remaining sur- 

 face immaculate, or with a very few spots, or at the most with an 

 obsolete reticulation. ..... Urellia Desvoidj'. 



45. SAPPvOMYZID.E. 



Small species, seldom more than 7 milliin. in length. Head 

 as broad or a little broader than the thorax ; front with one 

 or two bristles on each side anteriorly to those of the vertex. 

 Anteniiffi usually short and porrect, sometimes the third joint 

 elongated. Face without vibrissa? on the oral margin. Abdo- 

 men short-ovate. Legs never elongate. Auxiliary vein of 

 the wings present; cross-veins never approximated; basal 

 cells small, but complete. 



I include in this family the Sapromyzidfe and Lonchseidae 

 of Loew, though the characters are perhaps sufficient to jus- 

 tify their separation. The larvae of Sapromyza live in decay- 

 ing vegetable matter; they are slender, with two distinct 

 mouth booklets, tlie entire body, except the anterior segments, 

 roughened by very small bristles. The segments are distinctly 

 constricted, the penultimate segment with four conical pro- 

 cesses in a transverse row, the terminal segment with two 

 three jointed processes, between which is the cylindrical, stig- 

 matic tube. In Loncluva there are no conical processes on the 

 penultimate segment, and the stigmatic tubes or processes are 

 small and wart-like. 



TABLE OF GENERA. 



1. Tibia? without preapical bristle; front with a single fronto-orbital bris- 

 tle; ovipositor flattened and horny (/-"/((//((//(c ). ... 2 

 Tibiaj with a distinct preajiical bristle ; two fronto-orbital bristles; ovi- 

 positor not horny, ending tube-like (Sapirmii/zirKr).* . . '.i 



* Chwtor.ivlia Giglio-Tos (Mexico) luis three fronto-orbital bristles, the 

 anal cell rudiiiit'iitary ; arista inilnscciit, the face short, flat and vertical. 



