16-5-2024 RANAU, BORNEO 1 - ATLAS MOTH (Attacus atlas)

How rare is an atlas moth?

The atlas moth is considered among the largest moths in the world, along with species like the white witch moth, which can have a wingspan up to 14 inches, according to the California Academy of Sciences. Sightings of the creature in the U.S. are extremely rare – and were thought to be nonexistent until recently.

Range. The Atlas moth lives in Asia, from India to the Philippines and south to Indonesia. It belongs to the family Saturniidae, or giant silkworm moths, which has a worldwide distribution.

15-5-2023 PORING HOT SPRINGS, BORNEO - ATLAS MOTH (Attacus atlas)

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 lay a number of spherical eggs, 2.5 mm (0.098 in) in diameter, on the undersides of the leaves of food plants.

After approximately two weeks, dusty-green caterpillars hatch and feed on the their egg-shell, and then the foliage of citrus, cinnamon, guava, and evergreen trees. The caterpillars can grow to 11.5 cm (4.5 in) in length and 2.5 cm (0.98 in) in thickness. They have white, waxy, fleshy spines along their backs, which become more prominent at later instars. On the last abdominal segment beside the prolegs, there is a large green spot surrounded by an orange ring.

After reaching a length of about 11.5 cm (4.5 in), the caterpillars pupate. They spin a 7–8 cm long papery cocoon interwoven with desiccated leaves and attach it to a twig using a strand of silk. The adult moths emerge from the cocoon after approximately four weeks depending on environmental factors.

17-5-2023 PORING HOT SPRINGS, BORNEO - ATLAS MOTH (CATERPILLAR) (Attacus atlas)

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. 

2-6-2023 BALI BUTTERFLY PARK - ATLAS MOTH (Attacus atlas)

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.

An Atlas moth (Attacus atlas) rests on a tree trunk with its wings closed. A bird, hoping for a snack, creeps closer, until it's within striking distance. Just as it’s about to pounce, the moth’s wings spring open—and bam! Instead of a moth, the bird suddenly sees not one, but two snake heads. Confused and startled, the bird flies away—and the moth gets to live another day.

Atlas moths are perhaps most famous for the markings on the upper corner of their wings, which bear an uncanny resemblance to cobra heads (in profile). While not all entomologists are convinced of that visual mimicry, there is some convincing evidence. Cobras live in the same part of the world as these moths, and the moth’s main predators—birds and lizards—are visual hunters. Plus, species related to the Atlas moth have similar but less defined versions of the snake’s head, showing a pattern that could have been fine-tuned by natural selection.

 

2-8-2017 CENTRAL PARK, BUDAPEST - ATLAS MOTH (Attacus atlas)

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.

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.

2-8-2017 CENTRAL PARK, BUDAPEST - ATLAS MOTH (Attacus atlas)

30-7-2017 CENTRAL PARK, BUDAPEST - ATLAS MOTH (Attacus atlas)

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.

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.