Larentia clavaria

Larentia clavaria, the mallow, is a moth of the family Geometridae. The species was first described by Adrian Hardy Haworth in 1809. It is found from Siberia (Altai Mountains) in the east to the Iberian Peninsula, North Africa, and the British Isles in the west. In the north it ranges to the Caucasus, Tajikistan and Fennoscandia. In the south it is found the western Mediterranean islands, Italy, the Balkans and Asia Minor. It occurs only locally and is almost always rare. In the Alps, it rises up to 1200 m above sea level.

Caterpillar

Illustration from John Curtis's British Entomology Volume 6

Larentia clavaria
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Geometridae
Genus:	Larentia
Species:	L. clavaria
Binomial name
Larentia clavaria (Haworth, 1809)
Synonyms
Geometra clavaria Haworth, 1809 Geometra cervinata Denis & Schiffermuller, 1775 Ortholitha fumosata Turati, 1911 Eubolia datinaria Oberthur, 1890 Ortholitha pallidata Staudinger, 1901

The wingspan is 36–40 mm. Forewings are fawn colour with a browner basal patch, median band and distal shade, all finely and delicately white-edged distally, the median band also accompanied by a fine white line proximally, sharply indented on the submedian fold and more shallowly in the cell. Hindwing pale, becoming browner at the distal margin.[1] The larva is long and slender, monochrome bright yellow-green.

The moth flies from August to November depending on the location.

The larvae feed on Althaea officinalis and Malva species.