Description: Wingspan 17-21 mm. Forewing colouration can vary in this species. Most freshly emerged individuals are green and heavily marked with darker crosslines. There is a small dark mark running at right angles from the costa and a dark coloured discal spot. The green fades quickly and many individuals can appear light brown in colour when viewed in the trap. Hindwings similar in colour with darker crosslines and a small discal spot. Early June to mid-August. Skinner gives June and July as the normal flight period in Britain.

World Distribution: Eurasiatic; widespread across Europe as far east as western Asia.

Irish Distribution: Common and widespread in Armagh and Down with several recent records from well-known sites in Fermanagh.

Ecology: This species is mainly associated with woodland margins, orchards and mature gardens. Adults appear frequently at light in small numbers. The green pigment fades quickly and some individuals are not always recognised as being this species. The larvae feed from April to May on fruit trees including cultivated pear Pyrus, apple Malus and cherry Prunus and also Blackthorn Prunus spinosa. It overwinters as an egg.

Key Identification Features:

• Dark mark running at right angles from costa
• Heavy crosslines
• Small dark discal spot

Distribution Map from NBN: Chloroclystis rectangulata at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Chloroclystis rectangulata at iNaturalist World Species Observations database.