Biston robustum

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Biston robustum
Biston robustum male.JPG
Male
Biston robustum male2.JPG
Another Male
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Geometridae
Genus: Biston
Species:
B. robustum
Binomial name
Biston robustum
Butler, 1879
Synonyms
  • Biston robustum kiangsuaWehrli, 1941

Biston robustum is a species of moth belonging to the family Geometridae. This is a large moth and is known in its native range as the giant geometer moth. It is related, and generally similar, to the famous and widespread Peppered Moth.

The species is found in China (Shandong, Shaanxi, Shanghai, Jiangsu, Jiangxi), Taiwan, Japan, Russia, North Korea, South Korea and Vietnam. [1]

This species has recently gained attention due to the discovery of its use of chemical mimicry to avoid predation by ants. The larva of this species, in common with many other geometrids, uses visual mimicry, strongly resembling a twig of its host plant. Recent studies have shown that it also uses chemical mimicry, storing chemicals from its food in its cuticle so that ants are largely unable to distinguish it from a twig, even after making contact with their highly sensitive antennae. Ants foraging for prey have been observed walking along the moth larvae, oblivious of their presence. Utilizing the chemicals directly from diet is advantageous as the larva will always be a chemical match to the plant it is actually feeding on (the species is highly polyphagous - see below). It has been predicted that, with further study, other species will also be shown use this form of defence.

Food plants

The larvae of this species are polyphagous, feeding on a wide range of different plants including:

Related Research Articles

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Insects have a wide variety of predators, including birds, reptiles, amphibians, mammals, carnivorous plants, and other arthropods. The great majority (80–99.99%) of individuals born do not survive to reproductive age, with perhaps 50% of this mortality rate attributed to predation. In order to deal with this ongoing escapist battle, insects have evolved a wide range of defense mechanisms. The only restraint on these adaptations is that their cost, in terms of time and energy, does not exceed the benefit that they provide to the organism. The further that a feature tips the balance towards beneficial, the more likely that selection will act upon the trait, passing it down to further generations. The opposite also holds true; defenses that are too costly will have a little chance of being passed down. Examples of defenses that have withstood the test of time include hiding, escape by flight or running, and firmly holding ground to fight as well as producing chemicals and social structures that help prevent predation.

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<i>Biston suppressaria</i> Species of insect

Biston suppressaria, the tea looper, is a moth of the family Geometridae. It is found in China, India, Myanmar, Nepal, and Sri Lanka.

<i>Niphanda fusca</i> Species of butterfly

Niphanda fusca is a parasitic butterfly primarily found in East Asian countries such as Japan and Korea. It is a "cuckoo-type" parasite of the ant Camponotus japonicus. It utilizes chemical mimicry to trick the host worker ants into adopting it while it is a third-instar caterpillar. From there, it is fed mouth-to-mouth by the worker ants as though it were one of their own young.

<i>Ectropis bhurmitra</i> Species of moth

Ectropis bhurmitra, the tea twig caterpillar, is a moth of the family Geometridae. The species was first described by Francis Walker in 1860. A widespread Asian species, it is found around Indo-Australian tropics from India, Sri Lanka and Hong Kong, Taiwan, Thailand, New Guinea to Australian Queensland and the Solomon Islands.

References

  1. Jiang, Nan; Xue, Dayong; Han, Hongxiang (2011-10-25). "A review of Biston Leach, 1815 (Lepidoptera, Geometridae, Ennominae) from China, with description of one new species". ZooKeys (139): 45–96. Bibcode:2011ZooK..139...45J. doi: 10.3897/zookeys.139.1308 . ISSN   1313-2970. PMC   3260909 . PMID   22259309.