181 Euura sagmarius (Konow, 1895)

Figs 199, 427

Amauronematus sagmarius Konow, 1895: 177–178 . Lectotype designated by Muche (1975). Amauronematus viduatinus Malaise, 1931b: 40–41 . Lectotype designated below. Syn. nov. Amauronematus viduatinus var. apiciscerra Malaise, 1931b: 41 . Lectotype designated below. Syn. nov.

Diagnosis

The palest females have a nearly completely reddish head and thorax (except antenna), while the abdomen is still dorsally mostly black, separating them from E. miltonota (mostly yellowish, including the abdomen dorsally). The darkest specimens might not be reliably distinguishable from E. nimbus if the mesepisternum becomes completely black (usually at least slightly brownish or reddish). Males might not be clearly distinguishable from E. nimbus .

Female ZMUO.064651 with almost completely black mesepisternum (slightly brown line in the middle), labrum, clypeus and malar space pale, head behind and above eyes slightly brownish, abdomen ventroapically mostly pale.

Type material examined

Lectotype Amauronematus sagmarius

RUSSIA – Volgograd oblast • ♀; Sarepta [Volgograd]; 48.69° N, 44.53° E; SDEI, GBIF-GISHym4100.

Lectotype Amauronematus viduatinus, here designated

RUSSIA – Kamchatka oblast • ♀; Nischne-Kamtchatsk, Lake Azhabachye; 56.166° N, 161.893° E; R. Malaise leg.; NHRS, NHRS-HEVA000006398.

Paralectotype Amauronematus viduatinus

RUSSIA – Kamchatka oblast • 1 ♀; same data as for lectotype; NHRS, NHRS-HEVA000006394 .

Lectotype Amauronematus viduatinus var. apiciscerra, here designated

RUSSIA – Kamchatka oblast • ♀; Klutchi [Klyuchi]; 56.32° N, 160.85° E; R. Malaise leg.; NHRS, NHRS-HEVA000006404 .

Host plants

Salix phylicifolia and possibly some other Salix spp.

Genetics

COI

Based on 21 specimens, maximum within-species distance is 2.74% and the nearest neighbour, diverging by a minimum of 0%, is Euura nimbus .

Nuclear

Based on 20 specimens, maximum within-species distance is 1.34% (0.88% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.45%, is Euura nimbus .

Distribution and material examined

Palaearctic. Specimens studied are from Finland, Norway, Russia, and Sweden.