Myrmarachne
Encyclopedia
Myrmarachne is a genus of jumping spider
s which imitate an ant by waving their front legs in the air to simulate antennae. Some species also look strikingly like ants.
Spiders in this genus are commonly called "antmimicking spiders", although there are many other spiders that mimic ants
.
is elongate, with long chelicerae projecting forward in males. A waist is present on the cephalothorax, and often also on the opisthosoma
. Colors vary from black to yellow, depending on the mimicked ant species. One African species was observed to mimick one species when immature, and another as an adult.
The genus Bocus
is so similar to Myrmarachne as to be indistinguishable without the help of a microscope.
to Australia
, with some species found in the New World
. A few species, such as the palearctic
M. formicaria
, occur in temperate regions. With about 80 described and many undescribed southeast Asian species, it is the most diverse genus of jumping spider in this region.
myrmex "ant" and arachne "spider".
Spider
Spiders are air-breathing arthropods that have eight legs, and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other groups of organisms...
s which imitate an ant by waving their front legs in the air to simulate antennae. Some species also look strikingly like ants.
Spiders in this genus are commonly called "antmimicking spiders", although there are many other spiders that mimic ants
Ant mimicry
Ant mimicry is mimicry of ants by other organisms. Ants are abundant all over the world, and insect predators that rely on vision to identify their prey such as birds and wasps normally avoid them, either because they are unpalatable, or aggressive. Thus some other arthropods mimic ants to escape...
.
Description
The cephalothoraxCephalothorax
The cephalothorax is a tagma of various arthropods, comprising the head and the thorax fused together, as distinct from the abdomen behind. The word cephalothorax is derived from the Greek words for head and thorax...
is elongate, with long chelicerae projecting forward in males. A waist is present on the cephalothorax, and often also on the opisthosoma
Opisthosoma
The opisthosoma is the posterior part of the body in some arthropods, behind the prosoma . It is a distinctive feature of the subphylum Chelicerata...
. Colors vary from black to yellow, depending on the mimicked ant species. One African species was observed to mimick one species when immature, and another as an adult.
The genus Bocus
Bocus
Bocus is a genus of jumping spiders with three described species. They occur in the Philippines and Borneo and are indistinguishable from the related genus Myrmarachne without the help of a microscope.-Species:...
is so similar to Myrmarachne as to be indistinguishable without the help of a microscope.
Distribution
Myrmarachne mainly occurs in the tropics from AfricaAfrica
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
to Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
, with some species found in the New World
New World
The New World is one of the names used for the Western Hemisphere, specifically America and sometimes Oceania . The term originated in the late 15th century, when America had been recently discovered by European explorers, expanding the geographical horizon of the people of the European middle...
. A few species, such as the palearctic
Palearctic
The Palearctic or Palaearctic is one of the eight ecozones dividing the Earth's surface.Physically, the Palearctic is the largest ecozone...
M. formicaria
Myrmarachne formicaria
Myrmarachne formicaria is a jumping spider that mimics an ant. It is one of the few species in genus Myrmarachne that is found outside the tropics.-Distribution:M. formicaria has a palearctic distribution, and has been introduced to the USA....
, occur in temperate regions. With about 80 described and many undescribed southeast Asian species, it is the most diverse genus of jumping spider in this region.
Name
The genus name is a combination of Ancient GreekAncient Greek
Ancient Greek is the stage of the Greek language in the periods spanning the times c. 9th–6th centuries BC, , c. 5th–4th centuries BC , and the c. 3rd century BC – 6th century AD of ancient Greece and the ancient world; being predated in the 2nd millennium BC by Mycenaean Greek...
myrmex "ant" and arachne "spider".
Species
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New South Wales New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales... Taiwan Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following... Taiwan Taiwan , also known, especially in the past, as Formosa , is the largest island of the same-named island group of East Asia in the western Pacific Ocean and located off the southeastern coast of mainland China. The island forms over 99% of the current territory of the Republic of China following...
Alexander Macleay Hon. Alexander Macleay MLC FLS FRS was a leading member of the Linnean Society and a fellow of the Royal Society.Macleay was born on Ross-shire, Scotland, eldest son of William Macleay, provost of Wick... , 1839 — Asia Asia Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population... Myrmarachne melanotarsa Myrmarachne melanotarsa, the dark-footed ant-spider, is an African jumping spider found around Lake Victoria in Africa. Like other spiders in the genus Myrmarachne, these spiders mimic ants, in this case, ants of the Crematogaster genus. However, they are unusual in that they exhibit some form of... Wesolowska & Salm, 2002 — Kenya Hippolyte Lucas Pierre-Hippolyte Lucas was a French entomologist.Lucas was an assistant-naturalist at the Muséum national d'Histoire naturelle. From 1839 to 1842 he studied fauna as part of the scientific Commission on the exploration of Algeria.His brother was Prosper Lucas.-Works:*Histoire naturelle des... , 1871) — Algeria Algeria Algeria , officially the People's Democratic Republic of Algeria , also formally referred to as the Democratic and Popular Republic of Algeria, is a country in the Maghreb region of Northwest Africa with Algiers as its capital.In terms of land area, it is the largest country in Africa and the Arab... Afghanistan Afghanistan , officially the Islamic Republic of Afghanistan, is a landlocked country located in the centre of Asia, forming South Asia, Central Asia and the Middle East. With a population of about 29 million, it has an area of , making it the 42nd most populous and 41st largest nation in the world... Argentina Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires... Johan Christian Fabricius Johan Christian Fabricius was a Danish zoologist, specialising in "Insecta", which at that time included all arthropods: insects, arachnids, crustaceans and others... , 1798) — West Indies, Nicaragua, Panama Thailand Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...
Myrmarachne plataleoides Myrmarachne plataleoides, also called the Kerengga Ant-like Jumper, is a jumping spider that mimics the Kerengga or weaver ant in morphology and behaviour. This species is found in India, Sri Lanka, China and many parts of Southeast Asia.Unlike the weaver ants, M... (O. P.-Cambridge, 1869) — India, Sri Lanka, China, Southeast Asia Southeast Asia Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic... Hungary Hungary , officially the Republic of Hungary , is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The... , Croatia Croatia Croatia , officially the Republic of Croatia , is a unitary democratic parliamentary republic in Europe at the crossroads of the Mitteleuropa, the Balkans, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers ... , Romania Romania Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea... Myrmarachne striatipes Myrmarachne striatipes is a jumping spider that mimics an ant. Its body length is around eight millimeters.-References: : , version 8.0. American Museum of Natural History.-External links:*... (L. Koch, 1879) — Queensland, New South Wales Ralph Vary Chamberlin Ralph Vary Chamberlin was an American zoologist from Salt Lake City, Utah. He received his PhD from Cornell University in 1904. He was a professor of zoology at Brigham Young University from 1908-1911, and at the University of Utah from 1925-1938.... , 1925 — Philippines Libya Libya is an African country in the Maghreb region of North Africa bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad and Niger to the south, and Algeria and Tunisia to the west.... to India |