Euura olfaciens
This species is similar to Euura ribesii and Euura leucotrochus from which it differs by having a clypeus deeply incised to at least half the depth of the clypeus. In both genders the abdomen is mainly yellow except for at most the basal two tergites. The female has the head and mesonotum black except for some yellow on the inner orbits.
The male has the mesopleura mainly black. The abdomen above is as per the female but may have a medial row of black flecks.
Euura olfaciens larvae feed on currants, including blackcurrant.
Size: Female: 5.5 - 6.5mm, male: 5.5 - 6.5mm.
Status: Widespread
Distribution: England, Scotland
Flight period: Univoltine, April to May
Plant associations: Ribes spp., including Ribes nigrum (currants, including blackcurrant)
The National Biodiversity Network records are shown on the map below. (See terms and conditions)
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References:
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168
Prous, M., Liston, A., Kramp, K., Savina, H., Vårdal, H. and Taeger, A., 2019. The West Palaearctic genera of Nematinae (Hymenoptera, Tenthredinidae). ZooKeys, 875, p.63-127