Euura toeniata (Serville, 1823) PR.

Prous, Marko, Liston, Andrew, Monckton, Spencer K., Kramp, Katja, Vårdal, Hege, Vikberg, Veli, Heibo, Erik & Mutanen, Marko, 2025, West Palaearctic species of Euura Newman, 1837 (Hymenoptera, Tenthredinidae), European Journal of Taxonomy 977, pp. 1-377 : 177

249 Euura toeniata group

The group is mostly defined based on genetics. Three species are recognized in the group, of which E. ampla can be identified quite reliably from the others in the group and from the other Euura . Because of black pterostigma (as in E. ampla ) and other characters, E. toeniata can usually also be recognized from the other similar species, but sometimes the difference in pterostigma colouration is not clear compared to the very similar E. obscuripes (the third species in the group). Females of the E. toeniata group are similar also to E. anthracina , E. hyperborea (both with a pale pterostigma), and E. distinguenda (black pterostigma). The latter three species tend to have a shorter malar space (roughly 1.0–1.5 times as long as diameter of front ocellus) than the E. toeniata group (1.3–2.0 times as long) and narrower valvula 3 in dorsal view. In addition, females of E. obscuripes might sometimes be nearly indistinguishable from E. variator ( variator group). Males can be very similar (including penis valves) to the E. variator and E. vittata groups.