Lyonetia castaneella
Encyclopedia
Lyonetia castaneella is a moth
in the Lyonetiidae
family. It is found in Russia
(the southern part of Primorskii Territory) and Japan
.
The wingspan
is 6.5-7 mm. There are two distinct forms, an aestival and autumnal form. The fore wing of the aestival form is white, that of the autumnal form golden yellow. Adults are on wing from July to August in the southern part of the Primorskii Territory.
The larvae feed on Alnus japonica, Castanea cretata and Quercus acutissima. They mine
the leaves of their host plant. The mine has the form of an irregular blotch mine. It is made on a young leaf and extends from the apex of the leaf towards the base in an irregular blotch along the margin of the leaf. The blackish frass
is ejected from the holes which are made on the lower side of the mine, but some is scattered in the mine. The larva may migrate from one leaf to another. When full-grown, the larva leaves the mine and spins a hammock-like cocoon on the lower side of the leaf.
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...
in the Lyonetiidae
Lyonetiidae
Lyonetiidae is a family of moths. These are small, slender moths, the wingspan rarely exceeding 1 cm. The very narrow forewings, held folded backwards covering the hindwings and abdomen, often have pointed apices noticeably up- or down-turned. The larvae are leaf miners.The families Bucculatricidae...
family. It is found in Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
(the southern part of Primorskii Territory) and 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...
.
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 6.5-7 mm. There are two distinct forms, an aestival and autumnal form. The fore wing of the aestival form is white, that of the autumnal form golden yellow. Adults are on wing from July to August in the southern part of the Primorskii Territory.
The larvae feed on Alnus japonica, Castanea cretata and Quercus acutissima. 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 has the form of an irregular blotch mine. It is made on a young leaf and extends from the apex of the leaf towards the base in an irregular blotch along the margin of the leaf. The blackish frass
Frass
Frass is the fine powdery material phytophagous insects pass as waste after digesting plant parts. It causes plants to excrete chitinase due to high chitin levels, it is a natural bloom stimulant, and has high nutrient levels. Frass is known to have abundant amoeba, beneficial bacteria, and fungi...
is ejected from the holes which are made on the lower side of the mine, but some is scattered in the mine. The larva may migrate from one leaf to another. When full-grown, the larva leaves the mine and spins a hammock-like cocoon on the lower side of the leaf.