E, T. CRESSON, JR. 99 



SOME NORTH AMERICAN DIPTERA FROM THE 

 SOUTHWEST. 



BY E. T. CRESSON, JR. 



PAPEE II. 



TRYPETID^. 



(Plate I.) 



As mentioned in Paper I (published in the Trans. Am. Eut. Soc, 

 XXXII, Sept., 1906), this material, with a few exceptions, was col- 

 lected by J. A. G. Rehn and H. L. Viereck, chiefly in New Mexico, 

 during the summer of 1902 ; also a few species collected in Mexico 

 by J. F. McClendon in the summer of 1903. 



I have figured the wings of several described species, because they 

 have never been given, and I think every description, especially of 

 the Tephritis group, to be of value, should have a good figure of the 

 wing. When this group is monographed, no doubt there will be 

 many synonyms, at least varieties, established ; many on account of 

 the reliance placed upon the description of the wings which have 

 not been figured. 



The genera Ensina, Tephritis and Euaresta are very poorly de- 

 fined on account of their transmutation, and the only satisfactory 

 way to treat them is to place them under Tephritis, making the 

 former and latter subgenera. In this paper I have not considered 

 the genus £'nsi?ia, excepting E. hwnulis Lw., but have placed under 

 Tephritis all species having the Tephritis wing design. I separate 

 Eiiaresta according to Coquillett, but it is not very satisfactory ; 

 even Loew in his Monograph states that he is doubtful as to the 

 validity of this genus. 



Straiizia luiigipennis Wied., var. PI. I, fig. 1. 



One male, East Las Vegas, N. Mex. Length 6 mm. 



Entirely yellow, excepting black spots as follows: one including 

 the ocellar tubercle, two on the anterior dorsal margin of thorax 

 separated by a narrow yellow line, one on each lateral angle of the 

 thorax, two on the brown metanotum next to the abdomen. The 

 outer verticals and the two upper frontal pair of bristles incrassate 



TEANS. AM. KNT. SOC. XXXIII. MARCH, 1907. 



