The name death's-head hawkmoth refers to any of three moth species of the genus Acherontia (Acherontia atropos, Acherontia styx and Acherontia lachesis). The former species is found in Europe and throughout Africa, the latter two are Asian; most uses of the common name refer to the European species. These moths are easily distinguishable by the vaguely human skull-shaped pattern of markings on the thorax. They are large nocturnal moths with brown and yellow or orange coloring, and all three species are fairly similar in size, coloration and life cycle. Description The African death's-head hawkmoth (Acherontia atropos) is the largest moth in the British Isles, with a wingspan of ; it is a powerful flier, having sometimes been found on ships far from land. The forewings are a mottled dark brown and pale brown, and the hind wings are orangey-buff with two narrow dark bands parallel with the hind margin. The abdomen is a similar orangey-brown, with a broad, dark dorsal stripe. The most notable feature is a patch of short yellowish hairs on the thorax that gives the impression of depicting a human skull. It is a striking insect, but is seldom seen because it flies late in the night. A 2020 study describes how, when viewed upside-down, Acherontia atropos creates an illusion of a head with eyes: the mark on its thorax likened to a human skull is the "nose", with the skull's eye-sockets resembling nostrils. Spots on its forewings can be seen as eyes, and various other markings and features can be interpreted as ears, muzzle and lips. This illusion is also present in Agrius convolvuli (convolvulus hawk-moth) and five other species, with the study author suggesting that the function of the illusion of an eyed head is "almost certainly to deter, distract or otherwise deceive predators". The caterpillar of the African death's-head hawkmoth is also sturdy and somewhat variable in colour, being some shade of buff, green or brown, with seven diagonal blue lines. At the rear is a curved, thorn-like horn. It can attain a length of . The other two species of death's-head hawkmoth similarly have three larval color forms: typically, green, brown and yellow. The pupa is stout and reddish-brown, and is formed under the ground in a chamber the size of a large hen's egg. Development Eggs are laid singly under old leaves of a host plant and are green or greyish-blue. In