REPORT OF THE STATE ENTOMOLOGIST ICJoy 359 



Viola (violet) 

 Rolled leaves Mayetiola (D i p 1 o s i s) violicola, C. ai346 



Vitis (grape) 

 Tumid leaf (vitis) gall Janetiella brevicauda, C. 878 



Key to genera 



a Palpi uni or biarticulate 



b Ovipositor of female short, enlarged, triangular ; terminal clasp seg- 

 ment of male distinctly prolonged, not fusiform. . .Walshomyia n. g. 

 bb Ovipositor of female short with the sickle-shaped plate projecting 



dorsally Sackenomyia n. g. 



bbb Ovipositor of female fleshy, at least moderately long, not enlarged,, 

 terminal lobes rather short and stout ; terminal clasp segment of 



male short, stout, fusiform Rhopalomyia Rubs. 



aa Palpi triarticulate Oligotrophus Latr. 



aaa Palpi quadriarticulate 



b 3d vein uniting with costa at the apex of the wing. ..Mayetiola KiefiF. 



bb 3d vein uniting with costa well before the apex of the wing 



Janetiella Kieff. 



WALSHOMYIA 11. g. 



This genus appears to be intermediate between Rhopalomyia and 

 Rhabdophaga. It has i8 or 19 antennal segments, those of the 

 male distinctly stalked, with but one palpal segment and simple 



Fig. 33 Walshomyia juniperina, male and female antennal segments, much enlarged. (Original) 



