70.127 Horisme tersata (Fern) 1782
fw: 14-18mm; Jun-Aug; travellers joy (Clematis vitalba); common on calcareous soils in the southern half of England and S.Wales
ID: Characterised by the black line formed from the dorsal portion of the 2nd cross-line on each forewing and the posterior margin of the dorsum of the first abdominal segment. H.vitalbata (Small Waved Umber) has a much more solidly black median fascia and a contrastingly pale costal portion of the forewing; together with an extensively black dorsum of the abdomen.
Page published 29/04/2013 (§1-2) | §3 added 22/04/2014