Revision of the West Palaearctic Euura bergmanni and oligospila groups (Hymenoptera, Tenthredinidae) Author Prous, Marko https://orcid.org/0000-0002-5329-7608 Ecology and Genetics Research Unit, PO Box 3000, FI- 90014 University of Oulu, Finland & Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia & Senckenberg Deutsches Entomologisches Institut, Eberswalder Str. 90, 15374 Muencheberg, Germany mprous@ut.ee Author Liston, Andrew https://orcid.org/0000-0002-1278-424X Senckenberg Deutsches Entomologisches Institut, Eberswalder Str. 90, 15374 Muencheberg, Germany Author Mutanen, Marko https://orcid.org/0000-0003-4464-6308 Ecology and Genetics Research Unit, PO Box 3000, FI- 90014 University of Oulu, Finland text Journal of Hymenoptera Research 2021 2021-08-24 84 187 269 http://dx.doi.org/10.3897/jhr.84.68637 journal article http://dx.doi.org/10.3897/jhr.84.68637 1314-2607-84-187 1459B177AF2B4D399483E8BA21E70E67 7F7121845A8F5577A2D2367A85A62EE7 5349573

Fig ure 10. Characters of Euura bergmanni and Euura oligospila groups, males. A Euura respondens DEI-GISHym84697 B Euura oligospila DEI-GISHym84695 C Euura frenalis ZMUO.033184 D Euura viridis DEI-GISHym84547 E Euura brevivalvis DEI-GISHym11624 F Euura bergmanni DEI-GISHym84689 G Euura respondens DEI-GISHym84697 H Euura oligospila DEI-GISHym84695 I Euura brevivalvis ZMUO.039090 J Euura bergmanni DEI-GISHym84689 K Euura sylvestris ZMUO.035654 L Euura oligospila DEI-GISHym84695.

1	a Pronotum black (Fig. 17E) as well as most of body (Fig. 17C, D)
	b Paravalva basally with two-digit extension (Fig. 11I)	E. leptocephalus
-	aa Pronotum extensively pale, often also rest of body (e. g. Figs 13E, 19E)
	bb Paravalva basally simple (Figs 11A-H, 11J, 12A, B)	2
2(1)	a Pterostigma more or less uniformly pale (Figs 13G, 18C)	3
-	aa Pterostigma dark brown to black, sometimes centrally somewhat paler (e.g. Figs 13E, 14E)	11
3(2)	a Valviceps basally about as broad as apically and with weak or distinct constriction in middle (Fig. 12A, B)
	b Invagination between valvispina and paravalva indistinct (Fig. 12A, B)
	c Apical projection of tergum 8 about as broad as long or slightly longer than broad and about 0.5 times as long as tergum 8 (Fig. 10B, C)... Euura oligospila group	4
-	aa Valviceps often basally narrower than apically and without distinct constriction in middle (Fig. 11)
	bb Invagination between valvispina and paravalva distinct or indistinct (Fig. 11)
	cc Apical projection of tergum 8 about as broad as long or distinctly longer than broad and about 0.3-0.5 times as long as tergum 8 (Fig. 10D)	5
4(3)	a Valvispina possibly broader at base (Fig. 12A)
	b Mesepisternum (usually?) extensively pale (Fig. 21D)	E. oligospila
-	aa Valvispina possibly narrower at base (Fig. 12B)
	bb Mesepisternum usually black (Fig. 21H)	E. frenalis
5(3)	a Valvispina short (Fig. 11D, E) and invagination between valvispina and paravalva shallow (Fig. 11D, E)
	b Head in dorsal view rectangular (Fig. 10E)
	c Antennae black or slightly pale ventrally (Fig. 14F)
	d 6.0-8.0 mm	E. brevivalvis
-	aa Penis valve with different combination of characters (Fig. 11A-C, F-H, J)
	bb Head in dorsal view rectangular to square or round (Fig. 10F, G)
	cc Antennae usually distinctly pale at least ventrally (e.g. Figs 18C, D, 15D)
	dd 4.5-8.0 mm	6
6(5)	a Pseudoceps apically with distinct filament-like constriction (Fig. 11J)
	b Invagination between valvispina and paravalva distinct (Fig. 11J)
	c Valvispina distinctly dorsally directed (Fig. 11J)	E. respondens
-	aa Pseudoceps apically without filament-like constriction (Fig. 11A, C, F-H)
	bb Invagination between valvispina and paravalva distinct or indistinct (Fig. 11A-C, F-H)
	cc Valvispina in most species not dorsally directed (Fig. 11A-C, F-H)	7
7(6)	a Invagination between valvispina and paravalva indistinct (Fig. 11F-G)
	b Valvispina relatively short (Fig. 11F, G)
	c Paravalva apically distinctly broader than basally (Fig. 11F,G)	E. sylvestris
-	aa Invagination between valvispina and paravalva distinct (Fig. 11A-C, H)
	bb Valvispina relatively long (Fig. 11A-C, H)
	cc Paravalva apically distinctly broader than basally or about as broad as basally (Fig. 11A-C, H)	8
8(7)	a Dorsal margins of valvura and pseudoceps distinctly angled (Fig. 11A)
	b Valvispina somewhat directed dorsally (Fig. 11A)	E. bergmanni
-	aa Dorsal margins of valvura and pseudoceps not angled (Fig. 11B, C, H)
	bb Valvispina not directed dorsally (Fig. 11B, C, H)	9
9(8)	a Invagination between valvispina and paravalva deep (Fig. 11B)	E. dispar
-	aa Invagination between valvispina and paravalva shallower (Fig. 11 C, H)	10
10(9)	a Gap between valvispina and paravalva possibly smaller (Fig. 11C)
	b On Betula	E. viridis
-	aa Gap between valvispina and paravalva possibly larger (Fig. 11H)
	bb On Alnus	E. glutinosae
11(2)	a Valvispina long and somewhat directed dorsally (Fig. 11A)
	b Malar space 1.0-1.4 times as long as diameter of front ocellus (Fig. 10J)	E. bergmanni
-	aa Valvispina long and not directed dorsally, or short and somewhat directed dorsally (Fig. 11B, D, E)
	bb Malar space 1.3-1.9 times as long as diameter of front ocellus (Fig. 10I)	12
12(11)	a Valvispina long (Fig. 11B)
	b Invagination between valvispina and paravalva deep (Fig. 11B)
	c Antennae usually distinctly pale at least ventrally (Fig. 15D)	E. dispar
-	aa Valvispina short (Fig. 11D, E)
	bb Invagination between valvispina and paravalva shallow (Fig. 11D, E)
	cc Antennae black or slightly pale ventrally (Fig. 14F)	E. brevivalvis