40.005 Mompha divisella (Hourglass Mompha)
ws: 10-13mm (MBGBI4.1), fw 5-6mm (Sterling & Parsons); Aug-May; willowherbs (Epilobium spp); NS-A local in damp woodland in England and S.Wales
Mompha divisella §1 female
ID: Requires genital determination to distinguish from M.bradleyi, which is externally very similar. In all other species of Mompha with a white area at the forewing base ("continuous with" a white or whitish thorax), the white area does not continue to a second dorsal expansion at ⅖.
Male genitalia: sacculus tapers gradually from base to apex and extends further than costa
Female genitalia: origin of ductus seminilis jagged/irregular; sclerotisation of dorsal surface of A8 deeply concave.
See: M.bradleyi vs M.divisella for more detail and a direct comparison
Male genitalia: sacculus tapers gradually from base to apex and extends further than costa
Female genitalia: origin of ductus seminilis jagged/irregular; sclerotisation of dorsal surface of A8 deeply concave.
See: M.bradleyi vs M.divisella for more detail and a direct comparison
§1 St Mary's, Isles of Scilly; 30/11/2021; female; fw 5.3mm (specimen provided by Bob Dawson)
§2 St Mary's, Isles of Scilly; 07/10/2023; male; fw 5.1mm (specimen provided by Steve Joyner)
§3 St Mary's, Isles of Scilly; 09/09/2023; male; fw 5.7mm (specimen provided by Mick Scott)
All images © Chris Lewis
§2 St Mary's, Isles of Scilly; 07/10/2023; male; fw 5.1mm (specimen provided by Steve Joyner)
§3 St Mary's, Isles of Scilly; 09/09/2023; male; fw 5.7mm (specimen provided by Mick Scott)
All images © Chris Lewis
Page published 13/09/2022 (§1) | §2 added 01/01/2024 | §3 added 03/12/2024
