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), Nieves-Aldrey (2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Tavares (1905a).