Euura frenalis (Thomson, 1888)

Prous, Marko, Liston, Andrew & Mutanen, Marko, 2021, Revision of the West Palaearctic Euura bergmanni and oligospila groups (Hymenoptera, Tenthredinidae), Journal of Hymenoptera Research 84, pp. 187-269 : 187

Euura frenalis (Thomson, 1888)

Figs 5H , 9A , 10C , 12B , 21E-H

Nematus frenalis Thomson, 1888: 1210-1212. Type locality: Sweden, Jämtland, Åreskutan. LT designated by Koch (2000).

Pteronus fastosus Konow, 1904: 262-263. Type locality: northern Russia, Kanin Peninsula. LT designated below.

Nematus (Pteronidea) fastosus var. ponojense Hellén, 1948: 115. Type locality: Russia, Kola Peninsula, Ponoj (ST). Lectotype designated below. Syn. nov.

Nematus (Pteronidea) fastosus var. punctiscuta Hellén, 1948: 115. Type locality: Finland, Kilpisjärvi. LT designated below. Syn. nov.

Similar species.

See the key couplets 10 (females) and 4 (males).

Genetic data.

COI. Based on 11 specimens, maximum within species distance is 6.38% and the nearest neighbour, diverging by a minimum of 0.3%, is Euura oligospila . BINs: BOLD:AEA7654 and BOLD:ABZ2416, but possibly also Nearctic BOLD:ACA8095 and BOLD:AAV4677.

Nuclear. Based on 10 specimens, maximum within species distance is 0.67% (0.53% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.72%, is Euura oligospila .

Host plants and behaviour.

Hosts: according to Kangas (1985) Salix cinerea , Salix myrsinifolia , Salix pentandra , and Salix phylicifolia .

Two generations in southern Finland according to Lindqvist (1961).

Distribution.

Palaearctic ( Sundukov 2017, current data), but possibly also Nearctic. Mainly in the North. Specimens studied are from Finland, Norway, Russia (Murmansk Oblast, Nenets Autonomous Okrug), and Sweden.

Type material.

Nematus frenalis Thomson, 1888. LT, ♀, DEI-GISHym88902, MZLU.

Pteronus fastosus Konow, 1904. Lectotype, here designated, ♀, GBIF-GISHym3851, SDEI. Koch (2000) mentioned this same specimen as LT, with details of its labelling. This was not, however, a valid taxonomic act, because he omitted an explicit statement that he was designating this specimen (see ICZN 2003).

Nematus (Pteronidea) fastosus var. ponojense Hellén, 1948. Lectotype, here designated, ♀, http://id.luomus.fi/GL.3546, MZH.

Nematus (Pteronidea) fastosus var. punctiscuta Hellén, 1948. Lectotype, here designated, ♀, http://id.luomus.fi/GL.3544, MZH.

Figures

Fig ure 5. Characters of Euura hypoxantha, Euura bergmanni and Euura oligospila groups, females A Euura oligospila DEI-GISHym 84738 B Euura leptocephalus ZMUO. 033448 C Euura lienterica DEI-GISHym 21362 D Euura reticulata ZMUO. 033533 E Euura hypoxantha ZMUO. 035686 F Euura brevivalvis DEI-GISHym 31135 G Euura viridis ZMUO. 035636 H Euura frenalis ZMUO. 035931 I Euura leptocephalus ZMUO. 033448 J Euura brevivalvis DEI-GISHym 84214 K Euura brevivalvis DEI-GISHym 84214 L Euura oligospila ZMUO. 040699 M Euura bergmanni ZMUO. 033423 N Euura bergmanni ZMUO. 040825 O Euura viridis ZMUO. 035636 P Euura sylvestris ZMUO. 038944 Q Euura respondens http: // coll. mfn-berlin. de / u / 111027 R Euura bergmanni DEI-GISHym 31138 S Euura sylvestris DEI-GISHym 21351 T Euura oligospila DEI-GISHym 88899.

Figure 9. Lancets of Euura oligospila and Euura bergmanni groups. A Euura frenalis DEI-GISHym 31132 B Euura oligospila DEI-GISHym 88899 C Euura respondens DEI-GISHym 11597 D Euura sylvestris PR. 574 VV.

Fig ure 10. Characters of Euura bergmanni and Euura oligospila groups, males. A Euura respondens DEI-GISHym 84697 B Euura oligospila DEI-GISHym 84695 C Euura frenalis ZMUO. 033184 D Euura viridis DEI-GISHym 84547 E Euura brevivalvis DEI-GISHym 11624 F Euura bergmanni DEI-GISHym 84689 G Euura respondens DEI-GISHym 84697 H Euura oligospila DEI-GISHym 84695 I Euura brevivalvis ZMUO. 039090 J Euura bergmanni DEI-GISHym 84689 K Euura sylvestris ZMUO. 035654 L Euura oligospila DEI-GISHym 84695.

Figure 12. Penis valves of Euura. A Euura oligospila DEI-GISHym 21395 B Euura frenalis DEI-GISHym 12057 C Euura poecilonota? DEI-GISHym 12527 D Euura hypoxantha syntype GBIF-GISHym 3301.

Figure 21. Euura oligospila (A-D) and E. frenalis (Fig. E-H) adults. Female ZMUO. 035711 (A, B), male ZMUO. 035743 (C, D), female ZMUO. 035931 (E, F), male ZMUO. 034316 (G, H).