Geoica utricularia (Passerini, 1856)

on Pistacia, primary host plant

Geoica utricularia: gall

gall (from Houard, 1909a)

Geoica utricularia gall

Pistacia terebinthus, Greece, Kos © Ben van As

host plants

Anacardiaceae, narrowly monophagous

Pistacia terebinthus & subsp. palaestina.

According to Houard also P. atlantica, lentiscus, vera.

on Poaceae, secondary host plants


Apterae at the roots of grasses, always attended by ants. They are 1-2 mm in size, cream to light brown, dusted with white wax powder. Feet and antennae are stout. Body with numerous brown spatulate hairs.

host plants

Poaceae, oligophagous

Agrostis; Avena sterilis; Bromus; Corynephorus canescens; Deschampsia; Festuca; Hordeum vulgare; Lamarckia aurea; Lolium; Phleum; Poa; Triticum aestivum; Zea.


Pemphigus utricularius.


the species is distributed over large parts of Europe, northwards as far as Finland; there the species lives permanently on the secondary host.


Albrecht (2015a), Álvarez (2011a), Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Barbagallo & Massimino Cocuzza (2014a), Barbagallo & Pollini (2014a), Béguinot (2003a), Bellmann (2012a), Blackman & Eastop (2014), Blanes-Dalmau, Caballero-López & Pujade-Villar (2017a), Brown & Blackman (1994a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Heie (1980a), Hellrigl (2004a), Houard (1909a), Krzywiec (1982a), Lampel & Meier (2003a), Nieto Nafría & de Benito Dorrego (1976a), Nieto Nafría, Carnero Hernández & Mier Durante (1977a), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Nogal (2011a), Pérez Hidalgo, Martínez Peláez & Nieto Nafría (2001a), Petrović (1998a), Roberti (1983a), Salas-Remón, Llimona, Lozano ao (2015a), Suay Cano & González Funes (1998c), Tomasi (2014a).

mod 3.ii.2019