REPORT OF THE STATE ENTOMOLOGIST I916 



131 



specimen apparently with a peculiar plate filling most of the emargina- 

 tion between the two teeth. 



J\ 



Fig. 12 L asi op - 

 tera w i 1 1 i s - 



toni, gall, nat- 

 ural size (original) 



Fig. 13 Lasioptera 



w i 1 1 i s t o n i , breast- 

 bone of larva, after 

 Cockerell, enlarged 



(original from Cockerell) 



Mesilla, New Mexico; also common on the campus of the 

 Agricultural college, Mesilla Park, N. M. 



The imago described emerged May 2, 1897; there appears to be 

 a second brood, issuing in August. Great numbers of parasites, 

 determined by Mr Ashmead as Polygnotus atriplicis 

 Ashm., have been raised from the galls (collected at Mesilla Park) 

 by Miss Ivah Mead and the present writer. When I first bred this 

 species I was unable to identify it with anything described, so I sent 

 a drawing of it to Doctor Williston, who informed me that it was a 

 new Lasioptera without doubt. (Cockerell) 



Lasioptera ephedrae Ckll. 

 1898 Cockerell, T. D. A. Ann. & Mag. Nat. Hist., ser. 7, 2:327-28 

 This insect produces a fusiform swelling on the twigs of Ephedra 

 trif urea. 



Gall. Length 12 mm, diameter 5 mm. This deformity is a fusi- 



cepViata ««A 



«.-, ii-^t 



Fig. 14 Lasioptera ephedra, larva slightly enlarged, anterior and pos- 

 terior extremities more enlarged, after Cockerell (original from Cockerell) 



5 



