Abstract
Explorations in Brazil to find parasites of the red imported fire ant, Solenopsis invicta Buren, have uncovered a new species of the Tetradonematidae, Tetradonema solenopsis n. sp. The nematode parasite was fatal to about 25% of the colony. The female nematodes are large and sausage shaped and the males are small and difficult to find, which is typical of the genus. The ant is a new host record for tetradonematids.
Keywords: taxonomy, biological control, ant, new species, Tetradonema solenopsis, Nematoda, Solenopsis invicta
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