Margaromma
Encyclopedia
Margaromma is a spider
genus of the Salticidae family (jumping spiders). The 12 described species occur mostly in Australia
and New Zealand
, with several other species on Pacific islands
. One species (M. nitidum) is found in Cameroon
.
M. spatiosum from Sarawak
has not been studied since its first description in 1907. It reaches a body length of about 5 mm. M. spatiosum has a high cephalothorax
, with a flattish area just behind the rear eyes. The eye region is black, the rear part dark red, with white bands around the sides. The abdomen is almost circular and truncated at the front. It is brown, much lighter than the cephalothorax, with some red and white hairs. The legs are brown, with darker front legs. Murphy & Murphy (2000) cast some doubt if the species really belongs to Margaromma.
words for pearl
and eye. There has been some confusion as to the grammatical gender of this genus, with some authors considering it neuter, and others female, resulting in different endings of species names.
M. albertisi and M. marginatum were transferred to genus Zenodorus
in 1991.
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...
genus of the Salticidae family (jumping spiders). The 12 described species occur mostly in 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...
and New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...
, with several other species on Pacific islands
Pacific Islands
The Pacific Islands comprise 20,000 to 30,000 islands in the Pacific Ocean. The islands are also sometimes collectively called Oceania, although Oceania is sometimes defined as also including Australasia and the Malay Archipelago....
. One species (M. nitidum) is found in Cameroon
Cameroon
Cameroon, officially the Republic of Cameroon , is a country in west Central Africa. It is bordered by Nigeria to the west; Chad to the northeast; the Central African Republic to the east; and Equatorial Guinea, Gabon, and the Republic of the Congo to the south. Cameroon's coastline lies on the...
.
M. spatiosum from Sarawak
Sarawak
Sarawak is one of two Malaysian states on the island of Borneo. Known as Bumi Kenyalang , Sarawak is situated on the north-west of the island. It is the largest state in Malaysia followed by Sabah, the second largest state located to the North- East.The administrative capital is Kuching, which...
has not been studied since its first description in 1907. It reaches a body length of about 5 mm. M. spatiosum has a high cephalothorax
Cephalothorax
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...
, with a flattish area just behind the rear eyes. The eye region is black, the rear part dark red, with white bands around the sides. The abdomen is almost circular and truncated at the front. It is brown, much lighter than the cephalothorax, with some red and white hairs. The legs are brown, with darker front legs. Murphy & Murphy (2000) cast some doubt if the species really belongs to Margaromma.
Name
The genus name is probably derived from 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...
words for pearl
Pearl
A pearl is a hard object produced within the soft tissue of a living shelled mollusk. Just like the shell of a mollusk, a pearl is made up of calcium carbonate in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other...
and eye. There has been some confusion as to the grammatical gender of this genus, with some authors considering it neuter, and others female, resulting in different endings of species names.
Species
- Margaromma doreyanum (WalckenaerCharles Athanase WalckenaerBaron Charles Athanase Walckenaer was a French civil servant and scientist.-Biography:Walckenaer was born in Paris and studied at the universities of Oxford and Glasgow. In 1793 he was appointed head of the military transports in the Pyrenees, after which he pursued technical studies at the École...
, 1837) — New GuineaNew GuineaNew Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago... - Margaromma funestum Keyserling, 1882 — QueenslandQueenslandQueensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...
, New South WalesNew South WalesNew 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... - Margaromma imperiosum Szombathy, 1915 — New Guinea
- Margaromma insultans (Thorell, 1881) — New Guinea
- Margaromma namukana RoewerCarl Friedrich RoewerCarl Friedrich Roewer was a German arachnologist. He concentrated on harvestmen, where he described almost a third of today's known species, but also almost 700 taxa of spiders and numerous Solifugae....
, 1944 — FijiFijiFiji , officially the Republic of Fiji , is an island nation in Melanesia in the South Pacific Ocean about northeast of New Zealand's North Island... - Margaromma nitidum Thorell, 1899 — CameroonCameroonCameroon, officially the Republic of Cameroon , is a country in west Central Africa. It is bordered by Nigeria to the west; Chad to the northeast; the Central African Republic to the east; and Equatorial Guinea, Gabon, and the Republic of the Congo to the south. Cameroon's coastline lies on the...
- Margaromma obscurum (Keyserling, 1882) — Queensland
- Margaromma semirasum (Keyserling, 1882) — Queensland
- Margaromma sexuale (StrandEmbrik StrandEmbrik Strand was an arachnologist who classified many insect and spider species, including the greenbottle blue tarantula....
, 1911) — Aru IslandsAru IslandsThe Aru Islands are a group of about ninety-five low-lying islands in the Maluku province of eastern Indonesia. They also form a regency of Indonesia.-Geography:... - Margaromma soligena SimonEugène SimonEugène Simon was a French arachnologist. His many taxonomic contributions include categorizing and naming many spiders, as well as creating genera such as Anelosimus, Psellocoptus and Phlogius....
, 1901 — New Guinea - Margaromma spatiosum Peckham & PeckhamGeorge and Elizabeth PeckhamGeorge Williams Peckham and Elizabeth Maria Gifford Peckham were early American teachers, taxonomists, ethologists, arachnologists, and entomologists, specializing in animal behavior and in the study of jumping spiders and wasps.-Lives and careers:George Peckham was born in Albany,...
, 1907 — BorneoBorneoBorneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia.... - Margaromma torquatum Simon, 1902 — Moluccas
M. albertisi and M. marginatum were transferred to genus Zenodorus
Zenodorus
Zenodorus is a spider genus of the Salticidae family . They are distributed from the Moluccas to Australia, including several islands of the Pacific.At least one species, Z...
in 1991.
External links
- Salticidae.org: Diagnostic drawings of several Margaromma species