Euura connecta ( Lindqvist, 1958 )

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 : 52-53

publication ID	https://doi.org/10.5852/ejt.2025.977.2799
publication LSID	lsid:zoobank.org:pub:73DA044B-EB3D-4BF1-97EA-7430036DEEE0
DOI	https://doi.org/10.5281/zenodo.15020801
persistent identifier	https://treatment.plazi.org/id/03BCA619-FFEB-D826-9725-FE9FFEBDFC43
treatment provided by	Plazi (2025-03-03 10:25:10, last updated 2025-03-20 21:31:02)
scientific name	Euura connecta ( Lindqvist, 1958 )
status

Treatment

108 Euura connecta ( Lindqvist, 1958)

Figs 109 View Figs 105–109 , 350 View Figs 338–351

Pteronidea connecta Lindqvist, 1958: 95–96 .

Pteronidea nitida Lindqvist, 1969: 245–246 . Syn. nov.

Pteronidea polita Lindqvist, 1974a: 119 . Secondary homonym of Nematus politus Zaddach, 1883 [ Euura polita (Zaddach, 1883) ] Syn. nov.

Nematus glaber Vikberg, 1982 . Replacement name for Pteronidea polita Lindqvist, 1974 .

Diagnosis

Morphologically not clearly distinguishable from E. leucopyga , except for colouration. Overall, E. connecta females are paler (e.g., mesepisternum extensively pale) than E. leucopyga (mesepisternum black). Males are also paler (metafemur and sterna completely pale) than E. leucopyga (metafemur often black at base, sterna at least partly black). The species are genetically also close, but at least based on the sampled specimens (n = 6), E. connecta nuclear haplotypes are quite distinct from E. leucopyga . Nevertheless, it cannot be excluded that E. connecta is a southern pale form of E. leucopyga . Another very similar species is E. leionota , which seems to have a somewhat different saw: generally with 19–23 serrulae (17–19 in E. connecta ) and slightly convex ventral margin of lamnium (straight or slightly concave in E. connecta ).

Female

Head extensively pale around eyes; labrum, clypeus and supraclypeal area pale; flagellum black or pale ventrally; thorax dorsally black to nearly completely pale, laterally extensively to nearly completely pale; pronotum and tegula pale; pterostigma pale; metafemur and metatibia pale; hind tarsus pale or brown; abdomen dorsally mostly black, ventrally completely or nearly completely pale; mesepisternum smooth; claws bifid; valvula 3 in dorsal view apically blunt or acute.

Type material examined

Holotype Pteronidea connecta

SWITZERLAND – Valais • ♀; Zernez ; 46.70° N, 10.10° E; 1400 m a.s.l.; 16–18 Jun. 1953; H. Lindberg leg.; MZH, http://id.luomus.fi/GL.9223. GoogleMaps

Notes

19 serrulae; 7.3 mm. Best morphological match, but smaller: DEI-GISHym83923 (17–18 serrulae; 6.2 mm).

Holotype Pteronidea nitida

FINLAND – Inari • ♀; Ivalo; 68.65° N, 27.55° E; V. Karvonen leg.; 4 Jul. 1965; MZH, http://id.luomus. fi/GL.9218. GoogleMaps

Notes

17 serrulae; 6.5 mm. Best morphological match: DEI-GISHym83923.

Holotype Pteronidea polita

FINLAND – Vihti • ♀; Siikajärvi; 60.29° N, 24.52° E; V. Karvonen leg.; 10 Jun. 1973; MZH, http://id.luomus.fi/GL.3513. GoogleMaps

Notes

Best morphological match: DEI-GISHym4985.

Hosts plants

Salix pentandra and possibly other Salix spp. According to Macek et al. (2020) the host is Betula , but this may be due to misidentification of the very similar E. leionota , which feeds on Betula . We note that, based on sequencing of one larva, E. leionota is present in Slovakia.

Genetics

COI

Based on 8 specimens, maximum within-species distance is 0.15% and the nearest neighbours, diverging by a minimum of 0.15%, are Euura leucopyga , E. parviserrata , and E. sordidiapex .

Nuclear

Based on 6 specimens, maximum within-species distance is 0.31% (0.27% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.25%, is Euura leucopyga .

Distribution and material examined

Palaearctic. Specimens studied are from Estonia, Finland, Germany, Switzerland, and the United Kingdom.

References

Lindqvist E. 1958. Neue palaarktische Pteronidea - Arten (Hym., Tenthredinoidea). Notulae Entomologicae 37 (4): 92-117.

Lindqvist E. 1969. Neue Nematinen aus Finnland. II. (Hymenoptera, Tenthredinidae). Notulae Entomologicae 49: 231-246.

Lindqvist E. 1974 a. Funf neue Nematinen-Arten aus Finnland (Hymenoptera, Tenthredinidae). Notulae Entomologicae 54: 117-120.

Macek J., Roller L., Benes K., Holy K. & Holusa J. 2020. Blanokridli Ceske a Slovenske republiky II. Siropasi. Academia, Praha.

Vikberg V. 1982. Notes on the taxonomy and the nomenclature of some mainly Fennoscandian sawflies (Hymenoptera, Symphyta). Notulae Entomologicae 62 (2): 61-65.

Figures

Figs 105–109. Lancets of Euura Newman, 1837. 105. infirma (Förster, 1854) DEI-GISHym12499. 106. taegeri (Lacourt, 1996) DEI-GISHym12670. 107. oehlkei (Muche, 1973), holotype, ♀ GBIF- GISHym2786. 108. caucasica (Liston, Taeger & Blank, 2009), Pachynematus alticola Muche, 1973 holotype, ♂ DEI-GISHym81560. 109. connecta (Lindqvist, 1958) DEI-GISHym83923.

Figs 338–351. Penis valves of Euura Newman, 1837. 338. gehrsi (Konow, 1903) DEI-GISHym84687. 339. infirma (Förster, 1854) DEI-GISHym20732. 340. taegeri (Lacourt, 1996) DEI-GISHym12669. 341. bipartita (Serville, 1823) DEI-GISHym31236. 342. bipartita ZMUO.035732. 343. bipartita ZMUO.041907. 344. monticola (Thomson, 1871) PR.564VV. 345. perkioemaekii (Lindqvist, 1960) comb. nov. ZMUO.039249. 346. caucasica (Liston, Taeger & Blank, 2009) DEI-GISHym12542. 347. fuscomaculata (Förster, 1854) DEI-GISHym12492. 348. fuscomaculata DEI-GISHym31250. 349. fuscarima (Benson, 1933) comb. nov. Ex-Nr.179103. 350. connecta (Lindqvist, 1958) ZMUO.067317. 351. leucopyga (Lindqvist, 1949) DEI-GISHym84254.