Plant Parasites of Europe

leafminers, galls and fungi

Trigonaspis mendesi

Trigonaspis mendesi Tavares, 1902

on Quercus

Trigonaspis mendesi galls on Quercus lusitanica

Quercus lusitanica gall (from Houard, 1908a)


gall, often in numbers and red-coloured, at the underside of the midrib. The bizarre gall consists of a vertical stalk of about 3 mm, crowned by a croissant.

host plants

Fagaceae, narrowly monophagous

Quercus faginea, lusitanica.

parasitoids, predators

Aulogymnus gallarum; Eupelmus barai, urozonus; Mesopolobus dubius; Ormyrus pomaceus; Sycophila biguttata.


only the agamous generation is known.


Cogolludo (1921a), Fusu (2017a), Gómez, Hernández Nieves, Garrido Torres, ao (2006a), Houard (1908a), Nieves-Adrey (1984b, 1998a, 2001a), Nieves-Aldrey, Gómez, Hernández Nieves & Lobo (2006a), Tavares (1905a).

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