Elytrigia repens, France, dép. Nord, Grand-Fort-Philippe © Sébastien Carbonnelle

gall

At the tip of the shoot several internodes are strongly shortened, causing a bundle of overlapping, shortened, leaves. In the centre a shining yellowish or whitish-green maggot or a yellowish brown puparium.

host plants

Poaceae, oligophagous

Aegilops; Elymus caninus; Elytrigia atherica, juncea, repens; Hordeum murinum, vulgare & subsp. distichon; Secale cereale; Triticum aestivum.

According to Narthsuk ao not in Avena sativarefereces to Avenula pubescens; Helictochloa planiculme; Phleum are probably based nn erroneous identifications.

phenology

Two generations; the first one causes galling of the stem base, the second induces a more highly located gall.

synonyms

Chlorops taeniopus Meigen, 1830.

parasitoids, predators

Callitula bicolor; Stenomalina communis, gracilis; Trichomalopsis hemiptera.

notes

A serious pest in cereal crops.

references

Bailey (1967a), Buhr (1964b, 1965a), Dauphin & Aniotsbehere (1997a), Hering (1957a), Horber (1950a), Houard (1908a), Ismay (0000a), Nartshuk (2012a), Nartshuk & Pakalniškis (2004a), Nartshuk, Polevoi & Przhiboro (2020a), Redfern & Shirley (2011a), Roskam (2009a, 2019a), Spooner & Bowdrey (2012a), Tavares (1905a), Tomasi (2014a).