Scolopendra alcyona

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Scolopendra alcyona
Halcyon Giant Centipede imported from iNaturalist photo 303014483 on 24 June 2024.jpg
Urgent Endangered Species Designation (Japanese Ministry of the Environment) [1] [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Myriapoda
Class: Chilopoda
Order: Scolopendromorpha
Family: Scolopendridae
Genus: Scolopendra
Species:
S. alcyona
Binomial name
Scolopendra alcyona
Tsukamoto & Shimano, 2021 [3]

Scolopendra alcyona, the Halcyon giant centipede, [3] is a species of amphibious centipede found in the Ryukyu Archipelago of Japan and Taiwan. [4] [3] It is the third amphibious member of the genus Scolopendra discovered so far, and the largest species of centipede in Japan, as well as the first new centipede species discovered in Japan for 143 years. [5] [6] [7] [8] [9]

Contents

Appearance

Scolopendra alcyona has a greenish-black to jade or turquoise coloured trunk, [10] a brownish black head, bluish-black antennae, and greenish blue ultimate legs, all other legs being yellow in the first article, greenish blue in further ones. In specimens found on Kume-jima island, the legs were wholly yellow. The forcipules and coxosternite are light brown, the sternites pale green, and the pleurons are bluish black with greenish black integument. [3]

Scolopendra alcyona is the largest species of centipede in Japan, and grows to twenty centimetres in length and two centimetres in width. [10] [8] [6] [9]

Discovery

Researchers at the Tokyo Metropolitan University first heard reports of S. alcyona as an unidentified centipede attacking and feeding on freshwater prawns in the Ryukyu archipelago. [9] [11] A group of researchers led by myriapodologist Sho Tsukamoto and Associate Professor Katsuyuki Eguchi then verified the sightings, and described it as a new species, using genetic analysis to confirm the discovery. Seven specimens were collected in total. [12] [5] [13] [14] S. alcyona can also be distinguished as a new species by morphological features, such as a spur on the twentieth legs. [5] The paper describing the species was released on April 12, 2021, in Zootaxa. [5]

Diet, behaviour, and ecology

Scolopendra alcyona lives in forested streamside habitats in the Ryukyu archipelago and Taiwan. It hunts giant freshwater prawns. [12] [4] It can often be found under stones in nearby streams. [3]

Distribution

Scolopendra alcyona is found in the Ryukyu Archipelago, specifically on Kume-jima and Okinawa-jima islands, as well as in Taiwan, although it could also be found on other Ryukyu islands, such as Tokashiki-jima, Ishigaki-jima, and Iriomote-jima.

Taxonomy and nomenclature

Scolopendra alcyona is in the family Scolopendridae, specifically in the subfamily Scolopendrinae and in the tribe Scolopendrini. [15] [16] [17]

Scientific name

The species name comes from Greek mythology, namely the myth of Alcyone and Ceyx, who sacrilegously called each other "Zeus" and "Hera". This angered the gods, who, while he was out on a sea voyage, sunk Ceyx's ship with a thunderbolt. The God of Dreams, Morpheus, appeared to Alcyone in her sleep and informed her of her husband's fate. Struck with grief, she threw herself into the sea, but the gods pitied her and transformed her and her husband Ceyx into kingfisher (Halcyon) birds. [18] [5]

The centipede was named after Alcyone due to its legs, which are of similar colour to that of the kingfisher. [5] [6] [3]

Japanese name

The Japanese name for the centipede is also a reference to mythology. A local myth has it that a local ryûjin, or dragon god, had a centipede enter his ear. He was in great pain, and, after seeing a chicken eat a centipede, lived in fear of both animals. The local people then began to paint chickens on their boats and hoist centipede flags as a way to ensure safe voyage in the sea and scare off the god. [11] [9] [5] [4]

Protection

On July 1, 2021, the Japanese Ministry of the Environment granted Scolopendra alcyona, along with two newly-discovered cockroach species (the Benieriruri cockroach and the Usuobiruri cockroach), Urgent Endangered Species Designation until 2024. [6] [7] [10] The Ministry's reasoning was that the announcement of the new species attracted the attentions of collectors and enthusiasts in both Japan and other countries, and the capture and selling of the species could lead to the decline of the species. [7] [19] [5] Habitat loss is also a concern. [5]

Related Research Articles

<span class="mw-page-title-main">Centipede</span> Many-legged arthropods with elongated bodies

Centipedes are predatory arthropods belonging to the class Chilopoda of the subphylum Myriapoda, an arthropod group which includes millipedes and other multi-legged animals. Centipedes are elongated segmented (metameric) creatures with one pair of legs per body segment. All centipedes are venomous and can inflict painful stings, injecting their venom through pincer-like appendages known as forcipules or toxicognaths, which are actually modified legs instead of fangs. Despite the name, no centipede has exactly 100 pairs of legs; the number of pairs of legs is an odd number that ranges from 15 pairs to 191 pairs.

<span class="mw-page-title-main">Sakishima Islands</span> Island group within Ryukyu Islands

The Sakishima Islands are an archipelago located at the southernmost end of the Japanese Archipelago. They are part of the Ryukyu Islands and include the Miyako Islands and the Yaeyama Islands. The islands are administered as part of Okinawa Prefecture, Japan.

<span class="mw-page-title-main">Kerama Islands</span> Island group within Ryukyu Islands

The Kerama Islands are a subtropical island group 32 kilometres (20 mi) southwest of Okinawa Island in Japan.

<span class="mw-page-title-main">Japanese archipelago</span> Archipelago off the coast of Northeast Asia

The Japanese archipelago is an archipelago of 14,125 islands that form the country of Japan. It extends over 3,000 km (1,900 mi) from the Sea of Okhotsk in the northeast to the East China and Philippine seas in the southwest along the Pacific coast of the Eurasian continent, and consists of three island arcs from north to south: the Northeastern Japan Arc, the Southwestern Japan Arc, and the Ryukyu Island Arc. The Daitō Islands, the Izu–Bonin–Mariana Arc, the Kuril Islands, and the Nanpō Islands neighbor the archipelago.

<i>Scolopendra heros</i> Species of centipede

Scolopendra heros, commonly known as the Arizona desert centipede, giant desert centipede, giant Sonoran centipede, Texas black-tailed centipede, Texas redheaded centipede, and giant redheaded centipede, is a species of North American centipede found in the Southwestern United States and Northern Mexico.

<span class="mw-page-title-main">Yaeyama Islands</span> Island group within the Ryukyu Islands, Japan

The Yaeyama Islands are an archipelago in the southwest of Okinawa Prefecture, Japan, and cover 591.46 square kilometres (228.36 sq mi). The islands are located southwest of the Miyako Islands, part of the Ryukyu Islands archipelago. The Yaeyama Islands are the remotest part of Japan from the main islands and contain Japan's most southern (Hateruma) and most western (Yonaguni) inhabited islands. The city of Ishigaki serves as the political, cultural, and economic center of the Yaeyama Islands. On maps dating to the 1700s, the Yaeyama Group of Islands appears as the "Majico Sima Group", "Nambu-soto Islands", "Nambu Soto", and the "Taipin Islands".

<span class="mw-page-title-main">Ryukyu Islands</span> Chain of Japanese islands that stretch southwest from Kyushu to Taiwan

The Ryukyu Islands, also known as the Nansei Islands or the Ryukyu Arc, are a chain of Japanese islands that stretch southwest from Kyushu to Taiwan: the Ōsumi, Tokara, Amami, Okinawa, and Sakishima Islands, with Yonaguni the westernmost. The larger are mostly volcanic islands and the smaller mostly coral. The largest is Okinawa Island.

<span class="mw-page-title-main">Scolopendridae</span> Family of centipedes

Scolopendridae is a family of large centipedes.

<i>Scolopendra</i> Genus of centipedes

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<span class="mw-page-title-main">Ijima's leaf warbler</span> Species of bird

Ijima's leaf warbler is a species of Old World warbler in the family Phylloscopidae. The species is native to Japan, where it has been designated a Natural Monument under the 1950 Law for the Protection of Cultural Properties, with records also from Taiwan and the Philippines.

<span class="mw-page-title-main">Ryukyu flying fox</span> Species of bat

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<span class="mw-page-title-main">Scolopendromorpha</span> Order of centipedes

The Scolopendromorpha, also known as tropical centipedes and bark centipedes, are an order of centipedes whose members are epimorphic and usually possess 21 or 23 trunk segments with the same number of paired legs. The number of leg pairs is fixed at 21 for most species in this order and fixed at 23 for the remaining species, except for two species with intraspecific variation: Scolopendropsis bahiensis, which has 21 or 23 leg pairs, and S. duplicata, which has 39 or 43 leg pairs. Species in this order have antennae with 17 or more segments. The order comprises the five families Cryptopidae, Scolopendridae, Mimopidae, Scolopocryptopidae, and Plutoniumidae. Nearly all species in the family Scolopendridae have four ocelli on each side of the head, and the genus Mimops features a pale area often considered an ocellus on each side of the head, whereas the other three families are blind. Species in the family Scolopocryptopidae have 23 leg-bearing segments, whereas species in all other families in this order have only 21 leg-bearing segments. The only 3 known amphibious centipedes, Scolopendra cataracta, Scolopendra paradoxa and Scolopendra alcyona belong to this order.

<i>Scolopendra morsitans</i> Species of centipede

Scolopendra morsitans, also known as the Tanzanian blue ringleg or red-headed centipede, is a species of centipede in the family Scolopendridae. S. morsitans is the type species for the genus Scolopendra.

<i>Scolopendra cataracta</i> Species of centipede

Scolopendra cataracta is a species of centipede in the family Scolopendridae. It is the first known amphibious centipede, growing to up to 20 centimetres (7.9 in) in length.

In the context of the conservation of endangered species in Japan, and the list below, Endangered Species are those designated by Cabinet order in accordance with the 1992 Act on Conservation of Endangered Species of Wild Fauna and Flora. There are two main types of Endangered Species, National Endangered Species (国内希少野生動植物種) (NES) and International Endangered Species (国際希少野生動植物種) (IES), although there is also provision for Temporarily Designated Endangered Species (緊急指定種), as well as Designated Nationally Endangered Species (特定国内希少野生動植物種)—and businesses dealing with Designated Nationally Endangered Species (特定国内種事業) and Designated Internationally Endangered Species (特定国際種事業).

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<i>Scolopendra japonica</i> Centipede species

Scolopendra japonica, formerly classified as Scolopendra subspinipes japonica, is a species of scolopendrid centipede mostly found in Japan, although specimens have been reported in other parts of Eastern Asia such as China, Taiwan, Myanmar, Cambodia, and Laos. They usually grow between 7.5 and 13 centimetres in length. It is known by the common names Japanese giant centipede and blue-head centipede.

Eucorydia donanensis is a species of iridescent cockroach in the family Corydiidae. It was discovered on Yonaguni Island of Japan's Ryukyu Archipelago, and was believed to be restricted to that island until its discovery on nearby Ishigakijima Island in June 2022.

Eucorydia miyakoensis is a species of cockroach first discovered on Miyako Island, in Japan's Ryukyu Archipelago, in 2021. It is found exclusively in the forests of Miyako Island, where it lives in the forest floor's leaf litter and humus.

References

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  2. "種の保存法に基づく緊急指定種の指定について". 環境省.
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  4. 1 2 3 Anderson, Natali (2021-04-22). "Scientists Discover New Amphibious Species of Centipede | Sci.News". Sci.News: Breaking Science News. Retrieved 2022-09-06.
  5. 1 2 3 4 5 6 7 8 9 Mindy Weisberger (2021-04-21). "Newfound species of amphibious giant centipede named for woman cursed by the gods". livescience.com. Retrieved 2022-09-08.
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  9. 1 2 3 4 "New amphibious centipede species named after local dragon god discovered". www.yahoo.com. 18 April 2021. Retrieved 2022-09-10.
  10. 1 2 3 Center (APRC), Asia and Pacific Research. "Three species, including a new species of cockroach, found in the Nansei Islands are designated as". ScienceJapan. Retrieved 2022-11-20.
  11. 1 2 Davis, Margaret (2021-04-19). "Novel Amphibious Centipede Named After Local Gods Discovered, First for Japan in 143 Years". The Science Times . Retrieved 2022-08-10.
  12. 1 2 University, Tokyo Metropolitan (2021-04-16). "Large New Amphibious Centipede Species Discovered in Okinawa and Taiwan". SciTechDaily. Retrieved 2022-09-10.
  13. "New amphibious centipede species discovered in Okinawa and Taiwan". EurekAlert!. Retrieved 2022-09-10.
  14. "Newly discovered prawn-eating centipede is the largest in Japan". New Atlas. 2021-04-19. Retrieved 2022-09-10.
  15. Waldock, Julianne; Edgecombe, Gregory D. (2012-05-23). "A new genus of scolopendrid centipede (Chilopoda: Scolopendromorpha: Scolopendrini) from the central Australian deserts". Zootaxa. 3321 (1): 22. doi:10.11646/zootaxa.3321.1.2. ISSN   1175-5334.
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