52.009 Synanthedon flaviventris (Sallow Clearwing)
ws: 17-20mm (MBGBI2), fw 8-9mm (Waring & Townsend); Jun-Jul; sallows especially grey/goat willow (Salix spp); NS-B SC & SE England
Comes to SAL or MYO+TIP all day, peak 1-3:30pm. 2-yr life-cycle with adults present in even years only
Comes to SAL or MYO+TIP all day, peak 1-3:30pm. 2-yr life-cycle with adults present in even years only
ID: Thorax entirely dark, ventral surface of abdomen with a large yellow patch (hence flaviventris).
Similar to S.tipuliformis (Current Clearwing) which has a pair of narrow yellow streaks on the thorax and lacks the yellow ventral abdominal patch.
Similar to S.tipuliformis (Current Clearwing) which has a pair of narrow yellow streaks on the thorax and lacks the yellow ventral abdominal patch.
§1 South Downs, East Sussex; 06/07/2022; male; fw 8.7mm
§2 South Downs, East Sussex; 06/07/2022; male; fw 7.8mm
All images © Chris Lewis
§2 South Downs, East Sussex; 06/07/2022; male; fw 7.8mm
All images © Chris Lewis
Page published 09/07/2022 (§1-2) | Dissection images added 10/08/2022