There is also an ant from a different genus called "Yellow crazy ant", Anoplolepis gracilipes.

Paratrechina is an ant genus from the subfamily Formicinae

Formicinae

Formicinae is a subfamily within the Formicidae containing ants of moderate evolutionary development.Formicines retain some primitive features such as the presence of cocoons around pupae, the presence of ocelli in workers, and little tendency toward reduction of palp or antennal segmentation in...

 (Tribe

Tribe (biology)

In biology, a tribe is a taxonomic rank between family and genus. It is sometimes subdivided into subtribes.Some examples include the tribes: Canini, Acalypheae, Hominini, Bombini, and Antidesmeae.-See also:* Biological classification* Rank...

 Plagiolepidini

Plagiolepidini

Plagiolepidini are an ant tribe from the subfamily Formicinae.The following genera belong to this subfamily:*Agraulomyrmex*Anoplolepis*Aphomomyrmex*Brachymyrmex*Bregmatomyrma*Euprenolepis*Lepisiota*Myrmelachista...

).
There are over 150 described species and subspecies, some of which occur on every continent (except Antarctica). They form large colonies in open soil or under rocks or other objects, or in rotten wood on the ground.

Specifically Paratrechina longicornis occurs around the world, involuntarily transferred by humans, and is a common house pest in tropical climates. It is commonly called the crazy ant, for its erratic movement. The ants were included in Biosphere 2

Biosphere 2

Biosphere 2 is a structure originally built to be an artificial, materially-closed ecological system in Oracle, Arizona by Space Biosphere Ventures, a joint venture whose principal officers were John P. Allen, inventor and Executive Director, and Margret Augustine, CEO...

, ultimately overrunning the experiment.

An infestation of an unidentified species of Paratrechina, tentatively called Paratrechina species near pubens

Paratrechina species near pubens

The crazy Rasberry ant or Rasberry crazy ant is an invasive species of ant found near Houston, Texas.While this species is part of the crazy ant complex the media and others in Texas are also calling it "Rasberry" after the exterminator Tom Rasberry who first noticed the ants were a problem in 2002...

, is occurring in and around Houston, Texas

Houston, Texas

Houston is the fourth-largest city in the United States, and the largest city in the state of Texas. According to the 2010 U.S. Census, the city had a population of 2.1 million people within an area of . Houston is the seat of Harris County and the economic center of , which is the ...

, United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

Species

• Paratrechina albipes (Emery, 1899)
• Paratrechina amblyops (Forel, 1892)
• Paratrechina anthracina (Roger, 1863)
• Paratrechina arenivaga (Wheeler, 1905)
• Paratrechina arlesi Bernard, 1953
• Paratrechina aseta (Forel, 1902)
• Paratrechina assimilis (Jerdon, 1851)
• Paratrechina austroccidua Trager, 1984
• Paratrechina birmana (Forel, 1902)
• Paratrechina bourbonica (Forel, 1886)
• Paratrechina brasiliensis (Mayr, 1862)
• Paratrechina braueri (Mayr, 1868)
• Paratrechina bruesii (Wheeler, 1903)
• Paratrechina burgesi Trager, 1984
• Paratrechina butteli (Forel, 1913)
• Paratrechina caeciliae (Forel, 1899)
• Paratrechina caledonica (Forel, 1902)
• Paratrechina cisipa Smith & Lavigne, 1973
• Paratrechina clandestina (Mayr, 1870)
• Paratrechina colchica Pisarski, 1960
• Paratrechina comorensis (Forel, 1907)
• Paratrechina concinna Trager, 1984
• Paratrechina consuta (Wheeler, 1935)
• Paratrechina darlingtoni (Wheeler, 1936)
• Paratrechina dichroa Karavaiev, 1933
• Paratrechina dispar (Forel, 1909)
• Paratrechina dugasi (Forel, 1911)
• Paratrechina emarginata (Forel, 1913)
• Paratrechina faisonensis (Forel, 1922)
• Paratrechina flavipes (Smith, 1874)
• Paratrechina foreli (Emery, 1914)
• Paratrechina formosae (Forel, 1912)
• Paratrechina fulva (Mayr, 1862)
• Paratrechina glabra (Forel, 1891)
• Paratrechina goeldii (Forel, 1912)
• Paratrechina gracilis (Forel, 1892)
• Paratrechina grisoni (Forel, 1916)
• Paratrechina guatemalensis (Forel, 1885)
• Paratrechina hubrechti (Emery, 1922)
• Paratrechina humbloti (Forel, 1891)
• Paratrechina hystrix Trager, 1984
• Paratrechina incallida (Santschi, 1915)
• Paratrechina indica (Forel, 1894)
• Paratrechina iridescens (Donisthorpe, 1942)
• Paratrechina jaegerskioeldi (Mayr, 1904)
• Paratrechina johannae (Forel, 1912)
• Paratrechina kohli (Forel, 1916)
• Paratrechina koningsbergeri Karavaiev, 1933
• Paratrechina kraepelini (Forel, 1905)
• Paratrechina lecamopteridis Donisthorpe, 1941
• Paratrechina lepida (Santschi, 1915)
• Paratrechina lietzi (Forel, 1908)
• Paratrechina longicornis (Latreille, 1802)
• Paratrechina madagascarensis (Forel, 1886)
• Paratrechina manni Donisthorpe, 1941
• Paratrechina mendica Menozzi, 1942
• Paratrechina mexicana (Forel, 1899)
• Paratrechina microps (Smith, 1937)
• Paratrechina minutula (Forel, 1901)
• Paratrechina mixta (Forel, 1897)
• Paratrechina myops (Mann, 1920)
• Paratrechina nana Santschi, 1928
• Paratrechina nettae (Forel, 1911)
• Paratrechina nodifera (Mayr, 1870)
• Paratrechina nuggeti Donisthorpe, 1941
• Paratrechina obscura (Mayr, 1862)
• Paratrechina oceanica (Mann, 1921)
• Paratrechina opaca (Emery, 1887)
• Paratrechina pallida Donisthorpe, 1947
• Paratrechina parvula (Mayr, 1870)
• Paratrechina pearsei (Wheeler, 1938)
• Paratrechina perminuta (Buckley, 1866)
• Paratrechina phantasma Trager, 1984
• Paratrechina picta Wheeler, 1927
• Paratrechina pieli Santschi, 1928
• Paratrechina pubens
  Paratrechina pubens
  Nylanderia pubens is a species of ant of the genus Nylanderia, commonly called the Caribbean crazy ant. It was originally described as Paratrechina pubens Forel from St. Vincent, Lesser Antilles. This species was moved from Paratrechina to the genus Nylanderia in 2010.These ants are about...
  
  (Forel, 1893)
• Paratrechina pusillima Emery, 1922
• Paratrechina rosae (Forel, 1902)
• Paratrechina sakurae (Ito, 1914)
• Paratrechina sauteri (Forel, 1913)
• Paratrechina sharpii (Forel, 1899)
• Paratrechina sikorae (Forel, 1892)
• Paratrechina silvestrii (Emery, 1906)
• Paratrechina simpliciuscula (Emery, 1896)
• Paratrechina sindbadi Pisarski, 1960
• Paratrechina smythiesii (Forel, 1894)
• Paratrechina staudingeri (Forel, 1912)
• Paratrechina steinheili (Forel, 1893)
• Paratrechina subtilis (Santschi, 1920)
• Paratrechina tapinomoides (Forel, 1905)
• Paratrechina tasmaniensis (Forel, 1913)
• Paratrechina taylori (Forel, 1894)
• Paratrechina teranishii Santschi, 1937
• Paratrechina terricola (Buckley, 1866)
• Paratrechina tjibodana Karavaiev, 1929
• Paratrechina tococae Wheeler & Bequaert, 1929
• Paratrechina traegaordhi (Forel, 1904)
• Paratrechina vaga (Forel, 1901)
• Paratrechina vagabunda Motschoulsky, 1863
• Paratrechina vitiensis (Mann, 1921)
• Paratrechina vividula (Nylander, 1846)
• Paratrechina waelbroecki (Emery, 1899)
• Paratrechina weissi (Santschi, 1911)
• Paratrechina wojciki Trager, 1984
• Paratrechina yerburyi (Forel, 1894)
• Paratrechina zelotypa (Santschi, 1915)

External links

• AntWeb: Species images
• Australian Ants Online on Paratrechina
• Pictures and description of P. longicornis
• Species known from Costa Rica
• Paratrechina species key
• Paratrechina longicornis, crazy ant on the UF
  University of Florida
  The University of Florida is an American public land-grant, sea-grant, and space-grant research university located on a campus in Gainesville, Florida. The university traces its historical origins to 1853, and has operated continuously on its present Gainesville campus since September 1906...
  
   / IFAS
  Institute of Food and Agricultural Sciences
  The University of Florida’s Institute of Food and Agricultural Sciences is a federal-state-county partnership dedicated to developing knowledge in agriculture, human and natural resources, and the life sciences, and enhancing and sustaining the quality of human life by making that information...
  
  Featured Creatures Web site