Gracillaria ussuriella
Encyclopedia
Gracillaria ussuriella is a moth
of the Gracillariidae
family. It is known from Japan
(Hokkaidō, Honshū, Kyūshū) and the Russian Far East
.
The wingspan
is 9.8-12 mm.
The larva
e feed on Fraxinus species, including Fraxinus americana, Fraxinus chinensis, Fraxinus mandshurica and Fraxinus pennsylvanica. They mine
the leaves of their host plant. The mine made by the larva of the first three instars is large, lower-parenchymal, and tentiformed. The leaf roll made by the larva of the late instars is conical, or often cigarette-formed when many larvae inhabit a single leaflet. The cocoons are ordinarily formed inside the leaf roll. They are shining white and spindle-shaped. The species probably hibernates in the adult stage.
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 Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
(Hokkaidō, Honshū, Kyūshū) and the Russian Far East
Russian Far East
Russian Far East is a term that refers to the Russian part of the Far East, i.e., extreme east parts of Russia, between Lake Baikal in Eastern Siberia and the Pacific Ocean...
.
The wingspan
Wingspan
The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...
is 9.8-12 mm.
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 Fraxinus species, including Fraxinus americana, Fraxinus chinensis, Fraxinus mandshurica and Fraxinus pennsylvanica. 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. The mine made by the larva of the first three instars is large, lower-parenchymal, and tentiformed. The leaf roll made by the larva of the late instars is conical, or often cigarette-formed when many larvae inhabit a single leaflet. The cocoons are ordinarily formed inside the leaf roll. They are shining white and spindle-shaped. The species probably hibernates in the adult stage.