Euura oligospila ( Foerster , 1854)

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

publication ID	https://dx.doi.org/10.3897/jhr.84.68637
publication LSID	lsid:zoobank.org:pub:1459B177-AF2B-4D39-9483-E8BA21E70E67
persistent identifier	https://treatment.plazi.org/id/0CE7D9C7-1526-5463-962C-47DC782D8CBC
treatment provided by	Journal of Hymenoptera Research by Pensoft
scientific name	Euura oligospila ( Foerster , 1854)
status

Treatment

Euura oligospila ( Foerster, 1854)

Figs 5A, L, T View Figure 5 , 9B View Figure 9 , 10B, H, L View Figure 10 , 12A View Figure 12 , 21A-D View Figure 21 , 26A-C View Figure 26

Nematus oligospilus Förster, 1854a: 284-286. Type locality: Germany, Aachen area. LT designated by Koch and Smith (2000).

Nematus mendicus Walsh, 1866: 261-262. Type locality: not stated (ST, probably destroyed by fire: Zinovjev and Smith 2000). Synonymised with Nematus oligospilus by Benson (1962).

Nematus trivittatus Norton, 1867: 218. Type locality: Canada, Mackenzie River and Great Slave Lake; USA, Illinois (ST). Synonymy with Pteronidea mendica by MacGillivray (1916).

Nematus microcercus Thomson, 1871: 152. Type locality: Sweden, Lund. Lectotype designated below.

Nematus dorsivittatus Cresson, 1880: 10. Type locality: USA, Nevada (ST). Synonymised with Nematus oligospilus by Smith (1979).

Nematus salicivorus Cameron, 1882: 194-195. Type locality: Great Britain, England, Worcestershire. Lectotype designated below.

Pteronus koebelei Marlatt, 1896: 44-46 (key), 71. Type locality: USA, California and Oregon (ST). Synonymy with Nematus mendicus by Ross (1951).

Pteronidea vanduzeei Rohwer, 1913: 280-281. Type locality: USA, Virginia, Chain Bridge (HT). Synonymy with Nematus mendicus by Ross (1951).

Pteronidea elelea MacGillivray, 1923: 162. Type locality: Canada, Alberta, Edmonton (ST). Synonymy with Nematus mendicus by Ross (1951).

Similar species.

See the key couplets 10 (females) and 4 (males). Can be small, about 4.5 mm (ZMUO.030844).

Genetic data.

COI. Based on 12 specimens, maximum within species distance is 5.93% and the nearest neighbour, diverging by a minimum of 0.3%, is Euura frenalis . BINs: BOLD:AAV4676, BOLD:ABZ2416, BOLD:AEA6205, BOLD:ABY8224 (DEI-GISHym11390), BOLD:AEA3640 (Russian Far East), and possibly European BOLD:ADW3220 and Nearctic BOLD:ACA8095, BOLD:AAV4677. BOLD:ABW6676 is an artefact because of chimeric sequences composed of BOLD:AEA6205 and a possible NUMT cluster. Additionally, some specimens in BOLD possibly belong to a NUMT cluster because of a stop codon and in some cases also indels: ZMUO.038942, ZMUO.035716, JSLK-S0065, ZMUO.035743, ZMUO.035642, ZMUO.035689, ZMUO.031369, ZMUO.035712. Specimen ZMUO.030844 has two COI variants, one belonging to BOLD:AEA6205 and the other one in the NUMT cluster (it has a stop codon in the barcoding region and a 1 bp insertion outside the barcoding region).

Nuclear. Based on 10 specimens, maximum within species distance is 0.68% (0.52% based on haplotypes of individual females). The nearest neighbour, diverging by a minimum of 0.72%, is Euura frenalis .

Host plants and behaviour.

Hosts: Salix species ( Cameron 1882 [types of N. salicivorus ]; Macek et al. 2020). A large number of Salix species, and a few species of Populus , are named as hosts of Euura oligospila (or Nematus oligospilus ) in the literature, but such records from Australasia, southern Africa and South America all refer to E. respondens (see above). Because of widespread mixing up in Europe of E. respondens and E. oligospila , it is often not clear as to which species the published records refer. Lorenz and Kraus (1957) listed Ulmus as a host of Euura oligospila , but this is probably based on Conde (1938), whose meaning is not clear, and probably only indicates that an adult had been collected from Ulmus . Probably has two generations per year in southern Sweden ( Benander 1966).

Distribution.

West Palaearctic (see Material studied, below), East Palaearctic ( Sundukov 2017) and possibly Nearctic if the synonymies given above are correct, but mentions from southern Africa, South America, Australia, and New Zealand refer to E. respondens . Specimens studied are from Austria, Estonia, Finland, France, Germany, Russia (Primorsky Krai), Slovakia, Sweden, United Kingdom.

Type material.

Nematus oligospilus Förster, 1854. LT, ♀, GBIF-GISHym3372, ZSM.

Nematus microcercus Thomson, 1871. Lectotype, here designated, ♂, MZLU2017330, MZLU. Paralectotypes: 1♂, MZLU2017329. 2♀, MZLU2017327-328, det. E. oligospila ; 1♀, MZLU2017326, det. E. glutinosae , MZLU.

Nematus salicivorus Cameron, 1882. Lectotype, here designated, ♀, B.M.TYPE HYM.I.625, BMNH. “Type”, "Holotype Nematus salicivorus Cam ♀ det. R. B. Benson. 1938", " Euura oligospila det Benson miliaris det Cam", "Cameron 96-76. Worcester". On underside of card to which the specimen is gummed: "Bred 11.5.78; the larva X on Salix viminalis : Wor’sh.”