Dolbina tancrei is a species of 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 Sphingidae

Sphingidae

Sphingidae is a family of moths , commonly known as hawk moths, sphinx moths and hornworms, that includes about 1,200 species . It is best represented in the tropics but there are species in every region . They are moderate to large in size and are distinguished among moths for their rapid,...

 family. It is known from 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...

, north-eastern 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...

 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 50-82 mm. It can be distinguished from other Dolbina

Dolbina

Dolbina is a genus of moths in the Sphingidae family.-Species:*Dolbina borneensis - Brechlin, 2009*Dolbina elegans - Bang-Haas 1912*Dolbina exacta - Staudinger 1892*Dolbina formosana - Matsumura, 1927...

species by the green wings and body. It differs from most similar species Dolbina exacta

Dolbina exacta

Dolbina exacta is a species of moth of the Sphingidae family. It is found from the southern part of the Russian Far East, Japan and the Korean Peninsula, south into China as far as Sichuan, Hubei and Zhejiang. The habitat consists of open parklands and forest edges.The wingspan is 55-58 mm. Both...

by the presence of large black patches and extremely small black dots on the underside of the abdomen. The main distinguishing character however, is the presence of a crescent hook on the aedeagus apex. The abdomen and wings undersides are brownish grey. There are large black mesial patches on the abdomen underside.

Adults are on wing from in May and September in two generations in northern China and in two generations with adults on wing from May to June and in August in Russia. In Korea, adults have been recorded from late May to late August.

The larvae have been recorded feeding on Fraxinus and Syringa species in Primorskiy, Ligustrum japonicum

Ligustrum japonicum

Ligustrum japonicum is a species of Ligustrum native to central and southern Japan and Korea....

, Ligustrum obtusifolium

Ligustrum obtusifolium

Ligustrum obtusifolium is a species of privet, native to Japan, Korea and China.It is a deciduous shrub growing to 3 m tall. The leaves are 1-6 cm long and 4-25 mm broad.There are three subspecies:...

and Fraxinus rhynchophylla in Korea and Ligustrum japonicum, Ligustrum obtusifolium, Olea europaea and Osmanthus fragrans in Japan.