This midge induces polythalamous folded, thickened lobes or pouch galls along the edges of leaves of canyon live and huckleberry oaks ... as they develop, the galls are folded down toward the underside midrib, without significantly distorting the edge of the leaf, as do other typical fold galls ...

occurs in California and Oregon ...

"Dasineura" silvestrii

Leaf fold, always with a slit-like opening
Folded, thickened lobe along leaf edge

Only larvae are known of this species; they do not fit in any known genus but belong to the Oligotrophini.

Hosts: Quercus chrysolepis, garryana, vaccinifolia

Distr: OR, CA