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Yellow crazy ant

Scientific Name
Anoplolepis gracilipes
Scientific Author
(Smith)
Taxonomy
(Hymenoptera: Formicidae: Formicinae)
Risk
Low
Status
Exotic Pest Establishment in Thailand
Reliability
High
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Host Type

  • Unknown

Description

The yellow crazy ant (Anoplolepis gracilipes) is associated with human-modified environments, such agricultural areas or urban zones. On some tropical islands, including the Seychelles and Christmas Island, it has reached high densities, devastating native invertebrate and vertebrate populations, especially previously-threatened birds. In at least one case its removal of a keystone species has resulted in a change in forest composition and a decrease in nutrient cycling. It affects native fauna by competing for food resources, altering the habitat or predation. By lowering biodiversity, it indirectly threatens tourism sectors. Its relationship with various honeydew-producing insects exuberates scale insect populations, affecting native flora and causing significant damage to plants and economic losses in agricultural systems.

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