Andricus cinnamomeus

Quercus chapmani
Bud galls
Terminal enlarged bud with dead bud scales enclosing a single cell. In fall.

[Photo caption (no photo)]
Q chapmani. An enlarged terminal bud with seemingly dead brown bud scales in Oct, containing a single eccentric thin-walled cell. Adult the next spring June 16-30.

Andricus cinnamomeus n. sp.

Gall — A small, cone-shaped bud gall measuring 0.35 to 0.40 inch in length by 0.15 to 0.17 inch in diameter, covered with short deformed leaf scales. The egg is evidently deposited in the fall or midsummer, causing an abnormal development of the bud and bud scales, which cover the gall. The larval cell is thin, whitish in color, cocoon-shaped, and attached to one side at the base of the gall. One might easily cut into and open the gall without finding it, for unless he accidentally cuts into the side where the cell is situated, it would remain undiscovered.

Described from several specimens bred in April 1887. Occurs on Quercus parvifolia.

Andricus calycicola n. sp.

Gall - A small, smooth, hard, but thin shelled globular form .10 to .15 inch in diameter, issuing from a bud, but occasionally enclosed by the bud scales or by an aborted acorn cup. This gall develops very rapidly in the fall (October) and it drops to the ground where under the fallen debris the final transformations of the single enclosed larva is consummated, gnawing its way out of the gall in February.

Host - Quercus laurifolia [NOTE: this host record is suspect since it's in a different section than Q. chapmanii. Weld (1922) synonymized A. calycicola with A. cinnamomeus.]

Andricus cinnamomeus (Ashmead 1887)

Hosts: Quercus chapmanii

[Asexual generation bud gall found in the fall]