Callirhytis flavens, new species

Gall--Subglobular, found singly, in clusters, or several grown together on leaves projecting above and below and sometimes inhibiting the growth of the leaf. The color when mature is light green, sometimes tinged with red. Internally composed of a pithy substance. Diameter 2-5 mm.

The type material was collected by Miss Georgie Bentley in May. Adults emerged in the breeding room during the summer. [Only a female is described.]

Host: Quercus vaccinifolia, chrysolepis

Range: Eldorado County, Santa Clara County CA,

Heteroecus flavens (McC. & Egb.).

Quercus chrysolepis, vacciniifolia
Leaf galls, integral
Fig 148. Half above, half below. Green, single or cluster, 2-5 mm.

Fig 148. Q-vaccinifolia. Miss Egbert's figure. Projects on both.sides of leaf, green, 2 - 5 mm. in diameter. May.

Heteroecus flavens
Round-leaf-gall wasp
[Page 149]

Hosts: Quercus vaciniifolia

This cynipid wasp induces round, integral, monothalamous galls on leaves of huckleberry oak.