73.008 Chrysodeixis chalcites (Golden Twin-spot)
fw: 15-18mm; rare migrant with <500 British records, Jul-Nov.
Chrysodeixis chalcites (Golden Twin-spot) §1 female
ID: Very similar to C.acuta (Tunbridge Wells Gem). Both vary in ground colour from golden-brown to chocolate-brown depending on conditions experienced in the larval stage. In C.acuta there is a dark somewhat angled line at the forewing apex curving away from the termen to about halfway across the wing; this line is absent in C.chalcites. Male C.chalcites has black anal tufts; lacking in C.acuta. Male C.acuta has large fawn brushes on the sides of the abdomen; these are much less obvious in C.chalcites.
§1 St Marys, Isles of Scilly; 10/10/2016; female; found feeding on ivy (by Jake and Ian of Arlington Reservoir @ArlyRes) - this specimen had a very damaged right forewing; this has been repaired in Photoshop in the image showing both wings and the profile view has been flipped.
§2 St Marys, Isles of Scilly: 15/10/2018; female; to light
§3 St Marys, Isles of Scilly; 06/10/2019; female; fw 17.4mm; produced eggs
All images © Chris Lewis
§2 St Marys, Isles of Scilly: 15/10/2018; female; to light
§3 St Marys, Isles of Scilly; 06/10/2019; female; fw 17.4mm; produced eggs
All images © Chris Lewis
Page published 12/10/2016 (§1) | §2 added 18/10/2018, dissection images added 19/11/2018 | §3 added 18/12/2019
