The Piedmont Anomalous Blue (Polyommatus humedasae) is a species of butterfly

Butterfly

A butterfly is a mainly day-flying insect of the order Lepidoptera, which includes the butterflies and moths. Like other holometabolous insects, the butterfly's life cycle consists of four parts: egg, larva, pupa and adult. Most species are diurnal. Butterflies have large, often brightly coloured...

 in the Lycaenidae

Lycaenidae

The Lycaenidae are the second-largest family of butterflies, with about 6000 species worldwide, whose members are also called gossamer-winged butterflies...

 family. It is endemic to Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, where it is known from the Aosta valley in the Italian Alps. It is mainly found on altitudes of 800 to 1,000 meters but at times up to 1,600 meters.

There is one generation per year with adults on wing from July to August, with a peak in the second half of July.

The larvae feed on the flowers of Onobrychis montana and Onobrychis viciifolia

Onobrychis viciifolia

Onobrychis viciifolia is a species of legume known by the common name sainfoin; other species in genus Onobrychis may be known by this name as well. Other common names for this species include esparcet and pipirigallo. This is a perennial herb which is native to Eurasia, but it is widely cultivated...

. They are attended to by ants.