Larva: (description Ian F. Smith):Foodplants: June - July in spun leaves or rolled leaf of Salix spp.
Early instar larva
Length: 10 mm described.
Head: Pale brown. Strong pitchy black postero-lateral spot. Stemmata linked by pale grey 'c' shape mark.
Prothoracic shield: Pale greenish brown. Sometimes with dark postero-lateral marks. Black posterior and lateral pinacula.
Thoracic legs: Translucent pale brown.
Body: Pale translucent greenish. Paler ventrally.
Spiracles: Peritreme black.
Pinacula: Black, except concolorous with anal plate on segment A10. Segments A1,2,7,8 have a single row of four black pinacula on venter.
Setae: Colourless transparent.
Anal plate: Concolorous. Anteriorally a medial double row of transparent dots that diverge laterally at 90 degrees near the mid point of the anal plate.
Prolegs: Transparent. Concolorous with venter.
Late instar larva
Length: 17 mm described.
Head: Pale brownish green. Frons more greenish. Faint brown postero-lateral spot. Stemmata linked by pale grey 'c' shape mark (indistinct in photograph).
Prothoracic shield: Green with black pinacula.
Thoracic legs: Translucent very pale greenish brown.
Body: Apple green, paler ventrally. Dark contractile vessel visible dorsally. Indistinct dark subdorsal line. Prepupation dorsal cuticle tinted purple-red, strongest intersegmentally, ventrally jade green.
Spiracles: Peritreme black.
Pinacula: Black, except concolorous with anal plate on segment A10. Segments A1,2,7,8 have a single row of four black pinacula on venter.
Setae: Light brown, translucent.
Anal plate: Green. Irregular pattern of transparent dots show darker.
Prolegs: Translucent. Concolorous with venter. Crotchets pale brown.
UKMoths 
