Page:New species and synonymy of American Cynipidæ.pdf/6

 (sometimes this species causes a noticeable gall), A. tumida (not known previously except from well-developed galls), and still other species which I shall study further before describing. In going over museum material of the same sort I have found the species here described to be very distinct from bicolor.

It is very likely that there are, still in existence today, many distinct species of Cynipidæ of primitive relationships and not yet discovered because of their hidden locations in plants. It promises to prove very profitable if we search widely-for these wasps among herbaceous plants which have their dead stems persisting throughout the winter, especially pithy stems of Composites of many genera. Though Lactuca has proved the most heavily infested thus far, it is very likely that other plants are also thus attacked.

Aulacidea annulata, new species Plate XX, Figures 3 to 5