Andricus santafe Pujade-Villar, 2013
Andricus santafe Pujade-Villar, In Pujade-Villar et al.
(2013b: 192)

Gall (Figs. 4i-k). Large (2.0–7.0 x 1.0–5.0 cm) and hard, plurilocular galls develop on the branches. When young, the galls are olive green in color, transitioning to a light to dark brown color upon maturity. They consist of irregular and woody enlargements that partially surround small twigs and are composed of smaller, distinct and fully fused globular masses. The surface is delicately smooth. The larval chambers (3.0 x 4.5 mm) are irregularly dispersed throughout the gall tissue, with few chambers per gall (2-25, depending on the size of the gall). The walls of the larval chambers are yellowish and thin (though hard). The galls remain on the oak branches for one to two years and darken over time.
Hosts. Quercus laeta (Quercus section).

Biology. Species known only for the asexual generation. Gall development begins in June, maturing in February or March of the following year, during which time the adults emerge.

Distribution. Known only from Santa Fe (Mexico City).

Andricus santafe Pujade-Villar n. sp.

Gall (Fig. 15a). Galls are chestnut black, large irregular, woody enlargements partially surrounding small twigs and composed of small, distinct, thoroughly fused globular masses. Polythalamous, 2.0–7.0 x 1.0–5.0 cm, with very hard tissue. The grey to woody coloured gall surface is delicately smooth. The larval chambers (3.0 x 4.5 mm) are scattered throughout the gall tissue, few chambers per gall (2-25, depending of the size of the gall); walls of chambers are yellowish, hard, and distributed irregularly inside. Galls remain on oak branches one to two several years and turn darker over time. When young the galls are olive green. The gall development start in June and becomes mature until February to March of the next year.

Host.Quercuslaeta Liebm. (section Quercus).

Distribution. Mexico (Santa Fe, Delegación Cuajimalpa, D. F., Mexico City).

Biology. Only the asexual generation is known. Adults emerge in winter to early spring (February to April). Gall tissues are very hard.

Etymology. Named after the Mexican collecting place.