Crazy-ant
Guides
Nylanderia bourbonica
Robust Crazy Ant
Nylanderia bourbonica, commonly known as the Robust Crazy Ant, is a widespread invasive tramp ant species native to tropical regions. It has been introduced to multiple continents including North America, where it is established in Florida and other subtropical areas. The species exhibits characteristic erratic, rapid movement patterns and forms large polygynous colonies. As a generalist forager associated with human-modified environments, it can reach nuisance pest levels in urban settings.
Nylanderia faisonensis
Woodland Crazy Ant
Nylanderia faisonensis is a species of ant in the subfamily Formicinae, commonly known as the Woodland Crazy Ant. It is a member of the genus Nylanderia, which includes several species known for erratic, rapid movement patterns. The species was described by Auguste Forel in 1922. While less studied than its congener the tawny crazy ant (Nylanderia fulva), it shares the characteristic rapid, unpredictable foraging behavior that gives these ants their common name.
Nylanderia hystrix
Nylanderia hystrix is a species of ant in the subfamily Formicinae, described by Trager in 1984. The specific epithet 'hystrix' (Latin for 'porcupine') likely refers to some aspect of the species' morphology, possibly pilosity or spine-like structures. As a member of the genus Nylanderia, it belongs to a group commonly known as crazy ants due to their erratic, rapid movements. The genus Nylanderia contains numerous species distributed globally, with several being notable invasive pests.
Nylanderia phantasma
Ghostly Crazy Ant
Nylanderia phantasma is a species of ant in the family Formicidae, commonly known as the Ghostly Crazy Ant. It belongs to the genus Nylanderia, a group often referred to as crazy ants due to their erratic, rapid movement patterns. The species was described by Trager in 1984. Like other members of its genus, it is likely a generalist forager, though specific ecological details remain limited in published literature.
Nylanderia vividula
Field Crazy Ant
Nylanderia vividula is a species of ant in the subfamily Formicinae, commonly known as the Field Crazy Ant. Workers are morphologically similar to N. terricola, requiring examination of males for definitive identification. The species was originally described by Nylander in 1846 and has undergone taxonomic revision, with the subspecies N. vividula mjobergi synonymized under the senior name. It is native to the Nearctic region and has been recorded from multiple countries including Cuba and Cyprus.