Disholandricus chrysolepidis (Ashmead 1896), comb. nov.

Andricus chrysolepidis
Disholcaspis chrysolepidis

Hosts: Quercus chrysolepis

[A photo of the gall appears on page 60 of the pdf]

Gall. (Fig 182). Hard detachable, multilocular galls that burst out of the twigs and are usually clustered in rows. When young, galls are greenish, later they turn rusty brown on the top with light brown sides. A single gall up to 15 mm wide and 20 mm long; the gall cluster can exceed 60 mm in length. (Ashmead 1896, Russo 2006). Galls produce honeydew (Nicholls et al. 2017).

Biology. Only the asexual generation is known, inducing galls on Q. chrysolepis. Galls develop in autumn, mature in October-November; adults emerge in mid-winter.

Range: CA

Disholcaspis chrysolepidis (Beut.).

Quercus chrysolepis, palmeri
Stem galls, detachable
Fig 52. Convex-topped, rows or single.

52. Q. chrysolepis. Fresh galls burst out thru cracks in bark in June and attract ants; are full-grown in July; the adults probably emerge in December for those cut out Jan.21 were dead (Idyllwild). The type flies bear dates Oct.10, Nov.20,Dec. 19, 1885,

Disholcaspis chrysolepidis
Muffin-gall wasp

Hosts: Quercus chrysolepis, vacciniifolia, palmeri

This cynipid wasp induces hard, detachable, humped, polythalamous galls that burst out of the stems in clustered rows on canyon live oak, huckleberry oak, and Palmer's oak.