Euura oblita (Serville, 1823)

Liston, Andrew D., Heibo, Erik, Prous, Marko, Vårdal, Hege, Nyman, Tommi & Vikberg, Veli, 2017, North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae), Zootaxa 4302 (1), pp. 1-115 : 72

Euura oblita group

= Phyllocolpa Benson, 1960a

Diagnosis. Adult. In lateral view right mandible gradually tapering, left one with swollen base and thin, blade-like apex. Vein 2r-m normally present in both fore wings. Supraclypeal area densely setose, or at least with numerous setae laterally and on upper third. Antenna moderately long to very long: ♀ as long as costa of fore wing, to as long as combined length of costa and pterostigma; ♂ longer than costa of fore wing, to as long as length of fore wing. Valvula 3 in dorsal view subtriangular; in lateral view emarginate at least on ventral margin. Metatarsomere 4 dorsally shorter than its apical width. Cercus short to moderately long. Lancet: lamnium curved, tapering gradually from base to apex. Medial annular sutures nearly straight. Penis valve ventrally without small spines; base of valvispina ventrally clearly divided from lobe on which it arises by an incision or at least a right-angled turn.

Larva. Third abdominal segment with 4 dorsal annulets; 1–3 with setae. Suranal plate with widely separated pseudocerci.

Gall. Rolled leaves, sometimes spirally twisted, or folded leaf-margins; without swelling at oviposition site. Phenology. Uni- or bivoltine.