Rhagastis binoculata 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 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 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...

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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 54-63 mm. It is very similar to Rhagastis albomarginatus dichroae

Rhagastis albomarginatus

Rhagastis albomarginatus is a moth of the Sphingidae family. It is known from the Himalaya, China, Taiwan, Burma, Sumatra, Java and Borneo....

and distinguishable only by the pinkish-grey oval patch across the postmedian lines on the forewing upperside. The forewing upperside is also very similar to Rhagastis albomarginatus, but the conspicuous oval pale patch that divides the postmedian lines is pinkish-grey. The hindwing underside has a small black discal spot.

Larvae have been recorded feeding on Hydrangea chinensis

Hydrangea chinensis

Hydrangea chinensis is a species of Hydrangea flower, native to China.-External links:* at www.efloras.org....

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