The English name of this moth is derived from the caterpillar's fanciful resemblance to an elephant's trunk.
The adults are attractively coloured pink and green, with a streamlined appearance. They fly from May to July, visiting flowers such as honeysuckle (Lonicera) for nectar.
The larvae feed mainly on rosebay willowherb (Epilobium angustifolium), but also other plants as well, including bedstraw (Galium).
Location: Surrey, England