The Pear fruit moth, Pear moth or Pear pyralid (Acrobasis porphyrella) 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 Pyralidae

Pyralidae

The Pyralidae or snout moths are a family of Lepidoptera in the ditrysian superfamily Pyraloidea. In many classifications, the grass moths are included in the Pyralidae as a subfamily, making the combined group one of the largest families in the Lepidoptera...

 family. It is native to the temperate zone of eastern Asia

Asia

Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

, where it is widely distributed. It has been recorded from northern China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, the Korean Peninsula

Korean Peninsula

The Korean Peninsula is a peninsula in East Asia. It extends southwards for about 684 miles from continental Asia into the Pacific Ocean and is surrounded by the Sea of Japan to the south, and the Yellow Sea to the west, the Korea Strait connecting the first two bodies of water.Until the end of...

, 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...

, Taiwan

Taiwan

Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...

 and 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...

 (Primor'ye and Khabarovskii provinces).

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 14.5-21.5 mm. Adults are greyish with a violet tinge. The forewings have two transverse stripes with a crescent-shaped dark apical spot in between. The hindwings are yellowish-grey. In Russia, adults are on wing from mid July to mid-August and again in September. The first generation adults bore into the bud and go into hibernation.

The larvae feed on wild and cultivated forms of pear

Pear

The pear is any of several tree species of genus Pyrus and also the name of the pomaceous fruit of these trees. Several species of pear are valued by humans for their edible fruit, but the fruit of other species is small, hard, and astringent....

s. It either overwinters as first-instar or second-instar larva in the flower buds of pears in a thin white cocoon. In spring the larva moves to a fresh bud and feed in the developing buds, flowers and fruitlets. The larvae may move from fruit to fruit. The larva makes a hole in each fruit and pupate in the fruit, usually at the end of May. The larvae are rose-pink in the first instar, while full-grown larvae are dark-green dorsally and pale-yellow ventrally.