Atlas moth
Attacus atlas, the Atlas moth, is a large saturniid moth endemic to the forests of Asia. The species was described by Carl Linnaeus in his 1758 10th edition of Systema Naturae.
The Atlas moth is one of the largest lepidopterans, with a wingspan measuring up to 24 cm (9.4 in) and a wing surface area of about 160 cm2 (≈25 in2). It is only surpassed in wingspan by the white witch (Thysania agrippina) and Attacus caesar, and in wing surface area by the Hercules moth (Coscinocera hercules). As in most silk moths, females are noticeably larger and heavier than males, while males have broader antennae.
Atlas moths are named after Atlas, the Titan of Greek mythology (due to their size). In Hong Kong, the Cantonese means "snake's head moth", referring to the prominent extension of the forewing that resembles the head of a snake.
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NocturnalNocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal",...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
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OviparousOviparous animals are female animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive...
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Their habitat is primarily dry tropical forests, secondary forests, and shrublands across South Asia, East Asia, and Southeast Asia, including Borneo.
In India, Atlas moths are cultivated for their silk in a non-commercial capacity. Unlike silk produced by the related domestic silkmoth (Bombyx mori), Atlas moth silk is secreted as broken strands and is therefore less desirable. This brown, wool-like silk, known as fagara, is thought to have greater durability. Atlas moth cocoons are sometimes used as small pocket change purses in Taiwan. There is ongoing research as to whether the silk of the Atlas moth can be used as a substitute for common silks. The quality of the heavier cocoons, less restrictive rearing conditions and competent properties of the fibers, makes the silk produced by the Atlas moth a potential alternative for common silks. A study concluded that the silk fibers of the atlas moth had about an 80% higher density of cells and growth compared to the silk fibers of the silk moth.
The Japanese subspecies A. a. ryukyuensis, native to Yonaguni in the Yaeyama Islands.
