Loxaulus laeta Pujade-Villar, In Pujade-Villar et al. (2014c: 349)

Gall (Fig. 6c): Elongated cryptic swellings of the twigs located at the tips of the previous year's branches. The branches with galls are barely recognizable before the appearance of the adults. The surface of the vesicle is rough, colored like the bark. The larval chambers (1.5 x 1 mm) are dispersed inside the woody tissue.

Hosts: Quercus laeta (section Quercus).

Biology: Only the asexual generation is known. The galls were collected in February. Adults emerge in the same month. Possibly in January, there are also emergences of this species.

Distribution: Mexico (Mexico City); cited from Santa Fe in Pujade-Villar et al. (2014c).

Loxaulus laeta Pujade-Villar n. sp.

Diagnosis: Galls of L. laeta n. sp. are in distal twigs (subterranean in L. tenuis) and the larval cells are dispersed in the woody tissue (in nests of three or four to a dozen cells under the bark, in short depressions or pockets in woody tissue of L. tenuis).

Gall (Fig. 2c). Elongated slightly enlarged cryptic swellings (2 to 8 mm) of twigs, at the tips of the branches from previous year. The gall surface is rough, colored like the bark. The galled branches are hardly recognizable before the emergence of the adults. The larval chambers (1.5 x 1 mm) are dispersed in the interior of the woody tissue.

Host. Quercus laeta Liebm. (section Quercus). Endemic to Mexico.

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

Biology. Only asexual females are known. Adults emerge in late winter and early spring, when new shoots start to grow.

Etymology. Related to the host oak name