373 



DIPTERA. 



Fiff. 283. 



Curculionidce and minute Lepidoptera, together with 

 Aphides and species of Thrips, which last are thought by 



Mr, Walsh to prey 

 upon the cecidornyious 

 larvffi. 



The subdivisions of 

 the large genus Ceci- 

 domyia are noticed by 

 Osten Sacken in Part 

 1 of the Smithsonian 

 Monographs of Dip- 

 tera. As the student can refer to that work, we simply intro- 

 duce the cuts showing the venation of the wing of each genus, 

 without farther characterizing them. (Fig. 285, Cecidomyia ; 

 286, Diplosis; 287, Colpodia ; 288, Epidosis ; 289, Asynapta ; 



290, Spaniocera ; 



291, Lasioptera). 

 Another group of 

 this family' arc 

 Anarete and its 

 allies (Fig. 292. 

 Zygoneura ; 293, 

 Anarete ; 294, Ca- 

 tocha ; 295, Cam- 

 P3domyza ; 296. 

 Lestremia) which 

 are also related to 

 the Mycetophi- 

 lids. 



We have al- 

 ready referred, on 

 page 51, to cer- 

 tain c e c i d o - 

 m3'ians, which in 

 the larval condi- 

 tion p r o d u c c 

 young. We figure 

 (297) a species whose metamorphosis has been traced by 

 Nicholns Wagner. The larva is cvlindrical in form, like most 



