Solenopsis-invicta
Guides
Cyphoderus similis
Cyphoderus similis is an elongate-bodied springtail species in the family Paronellidae, described by J.W. Folsom in 1927. It is myrmecophilic and has been documented in phoretic association with the red imported fire ant (Solenopsis invicta). The species occurs across multiple insular and coastal regions including the Caribbean, Hawaii, Macaronesia, and the Amazon basin.
Pacifastacus leniusculus
Signal Crayfish
The signal crayfish is a large North American freshwater crayfish introduced to Europe in the 1960s to replace declining native fisheries. It has become one of the most ecologically impactful invasive decapods in Europe, outcompeting native crayfish and serving as a carrier of crayfish plague (Aphanomyces astaci). The species establishes self-sustaining populations rapidly, with six age cohorts documented within a few years of introduction. It shows sex- and size-specific coloration patterns, with males displaying more saturated and brighter ventral claw surfaces than females, suggesting a role in intraspecific communication.
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tricuspis
fire ant decapitating fly, phorid fly
Pseudacteon tricuspis is a parasitoid phorid fly that specifically targets the red imported fire ant (Solenopsis invicta). Adult females deposit eggs directly into worker ants, and the developing larvae eventually decapitate the host. The species was introduced to the United States in the late 1990s as a biological control agent against this invasive ant. Native to South America, it has now established populations across the southeastern United States.