Elytrigia juncea subsp. boreoatlantica, Cadzand © Arnold Grosscurt

opened gall

Elytrigia juncea, France, dép Nord, Dukerque, dunes de la Digue du Braeck © Sébastien Carbonnelle

gall

The top 3-4 internodes are very strongly shortened, their lateral walls are thickened, and the transverse walls in the nodes have disappeared. The leaf sheaths form an elliptic mass, the leaf blades are practically lost. in the cavity of the internodes a single larva.

host plants

Poaceae, narrowly monophagous

Elytrigia juncea.

synonyms

Harmolita hyalipennis f maritima. Dawah and Henneicke a.o. consider maritima an invalid synonym of T. hyalipennsis.

references

Bailey (1967a), Buhr (1964a), Dauphin & Aniotsbehere (1997a), Dawah (1987a), Henneicke, Dawah & Jervis (1992a), Roskam (2019a).