Phyllonorycter deschkai is a moth

Moth

A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...

 of the Gracillariidae

Gracillariidae

Gracillariidae is an important family of insects in the order Lepidoptera and the principal family of leaf miners that includes several economic, horticultural or recently invasive pest species such as the horse-chestnut leaf miner, Cameraria ohridella....

 family. It is known from Alps

Alps

The Alps is one of the great mountain range systems of Europe, stretching from Austria and Slovenia in the east through Italy, Switzerland, Liechtenstein and Germany to France in the west....

 on altitudes between 500 and 1,750 meters.

There are two generations per year.
The larva

Larva

A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...

e feed on Amelanchier ovalis

Amelanchier ovalis

Amelanchier ovalis, commonly known as Snowy Mespilus, is serviceberry shrub. Its pome fruits are edible and can be eaten raw or cooked.-External links:**...

, Cotoneaster integerrimus

Cotoneaster integerrimus

Cotoneaster integerrimus is a species of Cotoneaster native to central and eastern Europe and southwest Asia, from southern Belgium and eastern France south to Italy, and east through Germany to the Balkans, northern Turkey, the Crimea, the Caucasus and northern Iran; plants in Spain may also...

, Cotoneaster nebrodensis, Sorbus aria

Sorbus aria

Sorbus aria , the Whitebeam or Common Whitebeam is a deciduous tree, compact and domed, with few upswept branches; it generally favours dry limestone and chalk soils. The hermaphrodite cream-white flowers appear in May, are insect pollinated, and go on to produce scarlet berries, which are often...

and Sorbus chamaemespilus. They mine

Leaf miner

Leaf miner is a term used to describe the larvae of many different species of insect which live in and eat the leaf tissue of plants. The vast majority of leaf-mining insects are moths , sawflies and flies , though some beetles and wasps also exhibit this behavior.Like Woodboring beetles, leaf...

the leaves of their host plant. They create a thin lower-surface tentiform mine. Normally, there are no folds, but there may occur some indistinct folds on occasion.