Trigonaspis brunneicornis Kieffer, 1901
Quercus pyrenaica, galls (from Houard, 1908a)
one, often more, fusiform gall at the underside of a leaf, lengthwise attached to a thick vein; the end points are free. The surface has irregular ridges and is white-hairy.
Fagaceae, narrowly monophagous
very rarely also on Q. faginea, where the two species grow together.
only the agamous generation is known.
Cogolludo (1921a), Fusu (2017a), Gómez, Hernández Nieves, Garrido Torres, ao (2006a), Nieves-Aldrey (1984b, 2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Tavares (1905a).