Editing Large emerald (section)

==Technical description and egg, larva and pupa==
Bright green, the forewing usually with two lunulate-dentate white lnes, the hindwing with one, the lunules in the submedian area of forewing the thickest; both wings usually in addition with a faintly darker green cell-mark and some indistinct white intraneural spots distally to the postmedian
line. Under surface similarly but more weakly marked, with no antemedian line.- ab. ''herbacearia'' Men. is a form in which both the lines are obsolete. It was originally described, from Amurland, and as a separate species - ab. ''cuneata'' Burr, is characterized by a large wedge-shaped white spot adjoining the discal mark proximally in addition to the usual markings.-ab. ''subcaerulescens'' Burr, is of a bluer green ground-colour than the normal, but is probably scarcely worth naming.- ab. ''deleta'' Burr, is another unimportant aberration, in which the distal series of white spots is entirely obsolete - in ab. ''subobsoleta'' Burr. the antemedian line of the fore-wing is likewise obsolete. — ab. ''alba'' Gillm. is entirely white, above and beneath., slightly tinged with yellowish. The egg of is approximately oval, broader at one end and here flattened; it is strong and heavy looking, the surface sculptured, with strongly marked cells, the micropyle shown by a shallow, circular rayed pit. The larva feeds on birch and alder, and has been closely studied for its beautiful protective adaptations. It is rather stout, rugose, the surface shagreened, the head slightly notched, the setae mostly with enlarged summits. The larva hibernates small, and is at this time brown in colour, protectively assimilated to the tiny twigs. In the spring many become green, and they are wonderfully like the birch catkins among which they feed, various small protuberances and projecting edges of segments enhancing the resemblance. The pupa is cylindrical, tapering regularly from the fourth abdominal segment to the anal extremity; spiracles and tubercles distinct, the latter dark-coloured, bearing short curved setae; anal armature consisting of 8 hooks; the generalolour is pale green, the wing-cases tinged with brown.<ref>Prout, L. B. (1912–16). Geometridae. In A. Seitz (ed.) ''The Macrolepidoptera of the World''. The Palaearctic Geometridae, 4. 479 pp. Alfred Kernen, Stuttgart.[https://archive.org/details/macrolepidoptera1216seit  pdf ]   {{PD-notice}}</ref>
<Ref>  Axel Hausmann, 2021 In: Axel Hausmann (Hrsg.): ''The Geometrid Moths of Europe''. 1. Auflage. Volume 1: (Introduction to the series. Archiearinae, Oenochrominae, Orthostixinae, Desmobathrinae, Alsophilinae Geometrinae) . Apollo Books, Stenstrup 2021  ISBN 978-90-04-32254-7 </ref>