Andricus (Callirhytis) pulchra n. sp.
Galls on the aments of Q tinctoria [velutina] (also Q rubra), when dry, shrunken and shrivelled, and measuring from .1 to .15 of an inch in diameter. They are polythalamous, each gall producing four or five insects. The interior of the gall is of a very loose spongy texture and the outside, thin and papery and green like the leaves. When fresh they are round and the size of a common red currant. They differ from the galls of Dryophanta palustris O.S., which is sometimes found on the aments of Q ilicifolia, in the thin and smooth shell, and in being polythalamous. Flies of both sexes, appearing in May.
About one half of my fifty or sixty specimens are males.
- HF Bassett: (1890) New Species of North American Cynipidae (1890)©