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Species Pseudomyrmex gracilis - Graceful Twig Ant

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Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Formicoidea (Ants)
Family Formicidae (Ants)
Subfamily Pseudomyrmecinae
Genus Pseudomyrmex
Species gracilis (Graceful Twig Ant)
Other Common Names
Mexican Twig Ant, Slender Twig Ant
Explanation of Names
Pseudomyrmex gracilis (Fabricius 1804)
gracilis = 'slender'
8-10 mm(1)
A long, solitary, wasp-like ant. Large eyes, two segmented petiole, well developed sting. Color varies with geographic distribution, and can range from dark brown-black, to orange-brown, or a mixture of orange and brown [bicolored]. The variation found in Florida is mostly described as bicolored with a black head, black abdomen, and an orange middle region.(1)
se US (SC-FL-TX) to S. Amer. - Map (1)(2)
live insects (especially lepidopteran larvae), fungal spores; tends aphids for honeydew(1)
Life Cycle
Small nests. Leave pheromone trails. Unlike other congeners, not associated with Acacia trees.
possesses a somewhat painful sting, perhaps approximate in intensity to the fire ant, Solenopsis invicta, but rarely uses it. (Graham Montgomery, pers. obs.)
Print References
Wetterer J.K. (2010) Worldwide spread of the graceful twig ant, Pseudomyrmex gracilis (Hymenoptera: Formicidae). Fla. Entomol. 93: 535-540.
Internet References
Fact sheet (Toth 2007-2013)(4)