Ardis pallipes
One of the two Ardis species characterised by large punctures around the outer eye margins. Mostly black with the hind edges of the pronotum and tegulae white, as are the bases of the tarsal segments and tibia.
Eggs are positioned near the mid-vein of folded terminal leaves on a growing tip of roses, especially rambling roses. Emerging larvae intially feed on the leaves before burrowing into the shoot. The presence of a larva is indicated by a small hole with frass deposits. The terminal leaves soon wilt and die. The eonymph exits the stem and pupates in the ground.
Size: 5.5 - 6.5mm
Status: Widespread
Distribution: England, Scotland, Wales, Ireland
Flight period: Bivoltine, April to May and July to August
Plant associations: Rosa spp. (roses)
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
Evenhuis, H. H. 1973: Investigations on the rose tip infesting sawfly Ardis brunniventris (Hymenoptera, Tenthredinidae). - Mededelingen fakulteit Landbouwwetens., Gent 38: 1127-1131
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