Cephonodes tamsi 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 the Seychelles

Seychelles

Seychelles , officially the Republic of Seychelles , is an island country spanning an archipelago of 115 islands in the Indian Ocean, some east of mainland Africa, northeast of the island of Madagascar....

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It is very similar to Cephonodes trochilus

Cephonodes trochilus

Cephonodes trochilus is a moth of the Sphingidae family. It is known from Mauritius.The wingspan is 38-41 mm. It is very similar to Cephonodes tamsi, but distinguishable by the brownish rather than reddish upperside of the abdomen. The upperside of the head, thorax and wing bases are unicolorous...

, but distinguishable by the reddish rather than brownish upperside of the abdomen and the white centres to the abdominal segments below. The upperside of the head, thorax and wing bases are unicolorous green. The abdomen is uniformly reddish. The underside of the abdominal segments are medially white and laterally pale yellow, separated by black.