126 PROCEEDINGS OF THE NATIONAL MUSEUM vol. OS 



Brodie collected galls on Rosa hlanda at Toronto in August when the 

 larvae appeared to be mature and reared adults the next spring in 

 June. 



RHODITES SEMIPICEUS (Harris) 



Galls of this species {^=fulgens Gillette) on the roots of wild rose 

 were collected at Wilmette, Kenilworth, Winnetka, and Glencoe. 

 111., and at Miller, Ind. Adults emerged May 29, 1912 ; May 1-21, 

 1913; May lo-June 10, 1915. Brodie collected galLs on roots of 

 Rosa hlanda at Toronto and reared adults, 370 females and 4 males. 

 May 18-29, 1892. The National Museum has flies from Xew Haven, 

 Conn.; Hackensack, N. J. (emerged May 12, 1915); Flatbush (M. 

 Kenny), N. Y. (emerged May 7) ; South Dakota (Baker) ; Canada 

 (Baker); Ashland (T. A. Williams) and Raymond (P. B. Sears), 

 Nebr. 



Galls yielding similar flies were taken on Rosa rugosa at Evans- 

 ton, Winnetka, Glencoe, and Lockport, 111., and at Minneapolis, 

 ^linn. Winnetka galls collected in November and kept moist in 

 laboratory began to yield flies January 27. In the field at the same 

 locality flies had not yet begun to issue on May 12 when two more 

 galls were collected, flies emerging on May 17, 1907. Evanston galls 

 of the previous season were collected in May and flies emerged June 

 8-12, 1916. 



RHODITES UTAHENSIS Bassett 



The writer has taken large deeply-cleft root galls on rose at 

 Thistle, Utah; Colorado Springs, Colo.; and at Winnetka and 

 Glencoe, 111., where adults emerged May 12-June 1, 1915, and in 

 greenhouse April 2, 1916. Cornell has some fine galls from Logan 

 Canyon, Utah. Brodie collected similar galls on Rosa hlanda at 

 Toronto and found the larvae pupating on April 17. tlie adults 

 emerging May 19-June 5, 1892. 



EXPLANATION OF PLATES 



Plate 1 



Fig. 1 — Galls of Neiiroterus cscharcnsis Weld. X 5. 



2 — Galls of NeurotcruH f<altaria.s Wold. Natural size. 



3 — Galls of Diplolcpis aggregata Weld. Detached. Natural size. 



4 — Galls of Diplolcpis capillata Weld. X 5. 



Plate 2 



Fig. 5 — Galls of Diplolcpis cava Weld. Natural size. 

 6— Galls of Diplolcpis discalis Weld. X 5. 

 7 — Galls of Diplolcpis scssilis Weld. Natural size. 

 8 — Galls of Diplolcpis sulfiii ca Weld. Natural size. 

 9 — Gall of Diplolcpis iinica Weld and longitudinal sections. X 5. 



