Diastrophus smilacis Ashmead

Gall. (Plate XXVIII, Fig. 6). On stems of smilax (Smilax rotundifolia, S. herbacea and S. havanensis). Polythalamous. Irregularly rounded, abrupt, swellings usually surrounding the stems, sometimes resembling the gall of Rhodites globuloides. Green when fresh and of a pithy structure. Diameter 16 imm.

Habitat: Illinois; Florida.

The type galls of this distinct species sometimes resemble those of the rose gall, Rhodites globuloidees Beut. Figure 6 on Plate XXVIII was made from a gall found on Smilax havanensis collected by Dr. E. Bessey at Miami, Florida. The types of D. smilacis are in the United States National Museum, and one female cotype in the American Museum of Natural History.

- William Beutenmuller: (1909) The North American Species of Diastrophus and their Galls^©