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Pheidole obscurithorax is a South American native that has been introduced to the U.S. gulf coast. Pensacola, Florida, USA
Pheidole obscurithorax Pensacola, Florida, USA
Pheidole obscurithorax stays ahead of the competition using group retrieval of food items (in this case, a scavenged wasp carcass). Working together the ants can usually get the bounty home before a more aggressive species usurps their find. P. obscurithorax is a regular competitor of Solenopsis fire ants, both in its native Argentina and along the U.S. gulf coast where both species have been introduced. Entre Rios, Argentina
In its native Argentina, a colony of Pheidole obscurithorax has found an millipede. Major workers use their powerful jaws to slice away parts of the unfortunate myriapod, while minor workers specialize in carrying the bits back to the nest. Entre Rios, Argentina
The long, sharp jaws of this Pheidole obscurithorax soldier indicate a predominately predatory species. Pensacola, Florida, USA
Pheidole obscurithorax, a predatory species with jaws designed for slicing. Pensacola, Florida, USA
The long, sharp jaws of this Pheidole obscurithorax soldier indicate a predominately predatory species. Pensacola, Florida, USA
In its native Argentina, a colony of Pheidole obscurithorax has found an millipede. Major workers use their powerful jaws to slice away parts of the unfortunate myriapod, while minor workers specialize in carrying the bits back to the nest. Entre Rios, Argentina
Pheidole obscurithorax stays ahead of the competition using group retrieval of food items (in this case, a scavenged wasp carcass). Working together the ants can usually get the bounty home before a more aggressive species usurps their find. Pheidole. obscurithorax is a regular competitor of Solenopsis fire ants, both in its native Argentina and along the U.S. gulf coast where both species have been introduced. Entre Rios, Argentina
Pheidole obscurithorax is a South American native that has been introduced to the U.S. gulf coast.

Pensacola, Florida, USA
Pheidole obscurithorax is a South American native that has been introduced to the U.S. gulf coast. Pensacola, Florida, USA
Pheidole obscurithorax is a South American native that has been introduced to the U.S. gulf coast.

Pensacola, Florida, USA
See photo in original gallery.
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all images and text © Alex Wild 2001-2013