Neuroterus ellongatum (agamic)

Neuroterus verrucum (agamic)

Neuroterus ellongatum Pujade-Villar & Melika n. sp. (Figs 1–3)

Gall
(Fig. 3b). Galls are cryptic, located in twigs. They are inconspicuous; not recognizable before the emergence of the  adults. The larval chambers are dispersed longitudinally in  the woody tissue of the infested twig (2 x 1 mm.), never cause a strong twig (branch) swelling, thus the galls are hardly or not visible till the emergence of adults. 

Host plant
Quercus laeta

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

Biology
Only the asexual generation is known. Adults emerge in late winter and early spring when new shoots are starting to grow. They emerge from twigs of two years old, which means a short life cycle

Neuroterus verrucum Pujade-Villar n. sp. (Figs 4–6)

Gall
(Fig. 6). Cryptic galls located on the surface of the bark of the previous year shoots. They are very inconspicuous, difficult to recognize without the emerging holes of adults. They are solitary or in groups up to 5 larval chambers (1.1 x 0.5 mm). Externally are observed as small superficial warts on the bark; the larval chamber is yellowish and surrounded by a thin brown woody tissue.

Host
Quercus laeta.

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

Biology
Only the asexual generation is known. Adults emerge in late winter and early spring when new shoots are starting to grow. 

First record of Neuroterus galls on twigs in Mexico with description of two new species (Hym.: Cynipidae)