Paracraspis patelloides (Trotter, 1910), comb. rev.

Andricus? patelloides
Acraspis patelloides

Hosts: Quercus chrysolepis

[Photos of the gall appear on page 73 of the pdf]

Gall. (Fig 223). Detachable, monolocular concave leaf galls with flared rims on the underside of leaves on midrib or lateral veins; solitary or in clusters of 2–3 galls. The young fleshy galls are flat to slightly concave; as they mature the sides of the gall grow higher, creating a deep central depression and forming a bowl shape. The mature galls are 12 mm in diameter and 5 mm high. When fresh, the galls are a faint pea green to ivory color with pink red margins. By fall, the galls turn beige with hints of pink or red along the margins of the top, with small dark spots on some specimens. The sides of the galls are ridged and nonglossy. The larval chamber lies transversely under the central depression and the exit hole is made through the thin roof into the bottom of this depression. Under the larval chamber a central cavity reaches to the point of attachment (Weld 1926, Russo 2006).

Biology. Only the asexual generation is known, inducing galls on Q. chrysolepis. Galls start to develop in April on the previous year’s leaves; adults can be found in galls in November-December; emerge in early spring; adults continue to emerge until late May.

Range: CA, AZ

Paracraspis patelloides

Quercus chrysolepis
Leaf galls, separable from leaf intact
Fig 103. Saucer-shaped, dia 9 mm.

Fig 103. Q. chrysolepis. Pea-green with a red margin on under side of leaf in summer on leaves of previous season. Usually single. There is a cavity under the larval cell. Adults have been cut out on Nov. 10 and Dec. 50.

Paracraspis patelloides
(Acraspis patelloides)*
Bowl-gall wasp

Hosts: Quercus chrysolepis

This cynipid wasp induces detachable, monothalamous, usually concave galls with flared rims on ventral midrib or lateral veins of last year's leaves of canyon live oak.

Cynips guadaloupensis var patelloides
agamic form

Gall. Deep bowl- shaped, somewhat flattened basally, the sides steep but slightly flaring, the rim more or less circular, the top of the bowl solid, flat to concave; up to 13.0 mm. in diameter by 7.0 mm. high, usually smaller than this; with the larval cell centrally located at the top of the gall, the rest of the gall more or less spongy crystalline; on the under surfaces of leaves of Quercus chrysolepis. Figures 144-145, 192.

RANGE. — California: Idyllwild (Weld in U.S. Nat. Mus. and Kinsey coll.). San Jacinto Mountains and Pasadena (galls, Kinsey coll.). Camp Baldy in San Gabriel Mountains (gall, acc. Weld 1926). Mt. Lowe (gall, Silvestri in Kinsey coll.). Kern County (U.S.D.A. 5527, acc. Weld 1926). Sequoia National Park (types, Weld coll.). Yosemite (gall, Silvestri acc. Trotter 1910) .