Euura amerinae (Linnaeus 1758)
- Dataset
- North European gall-inducing Euura sawflies (Hymenoptera, Tenthredinidae, Nematinae)
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Insecta
- order
- Hymenoptera
- family
- Tenthredinidae
- genus
- Euura
- species
- Euura amerinae
description
Genetic data. The closest barcodes to those of E. amerinae in BOLD are of E. testaceipes (diverging by a minimum of approx. 1.1 %) and E. venusta (approx. 2.8 %). Similar species. Females of E. venusta and E. testaceipes are separable from amerinae by several characters (see Key). Males of both the former species are apparently rare, compared to amerinae, with a more normal sexratio. Male amerinae are best recognised by the short and wide inner tooth of the claw, which is longer and thinner in all other W. Palaearctic species in the group. Bionomics. Host plants: Salix pentandra (Kopelke 1996). The host recorded for N. populi by Hartig (1837) is certainly a misidentification of S. pentandra (Liston et al. 2006), but there are unconfirmed observations of galls on other Populus species (see, e. g., Baer 1910). Biology: Kolehmainen et al. (1994), Kopelke et al. (2012), Liston (1982, 2003), Roininen et al. (1993 a), Roininen et al. (1996). This is the only European gall-inducing sawfly, apart from E. piliserra, in which several larvae normally inhabit a single gall.
distribution
Distribution. North and Central Europe, including the British Isles (Taeger et al. 2006), to the northern parts of the Russian Far East (Zhelochovtsev & Zinovjev 1995). Occurrence in Sweden: published records; Skåne (Wahlgren 1944), Halland (Andersson 1955), Småland, Öland, Gotland (Wahlberg 1951), Västergötland (Lundberg 1963), Bohuslän, Södermanland (Wahlberg 1951), Uppland (Wahlgren 1944, 1953), Värmland, Dalarna, Norrbotten, Torne Lappmark (Wahlberg 1951). Material examined: Skåne, Småland, Öland, Norrbotten.