title: Then there were five: a reexamination of the ant genus Paratrechina (Hymenoptera, Formicidae).
abstract: The ant genus Paratrechina is reexamined based on the discovery of two new species from Madagascar (P. ankarana sp. n. and P. antsingy sp. n.). Paratrechina kohli, a species known from central Africa, is transferred to Paratrechina from Prenolepis based on a new morphological interpretation of the genus and an updated morphological diagnosis of the genus is provided. This means that other than the widespread P. longicornis, whose origins remain uncertain, all Paratrechina are restricted either to the Afrotropical or Malagasy regions. It would also appear that of the five Paratrechina species now known, three are from dry forest habitats. With this reexamination of the genus, the possible origins of P. longicornis are discussed. A key to the genera of the Prenolepis genus-group is provided, as is a key to the workers of Paratrechina. In addition, we also designate a lectotype for Paratrechina kohli.
authors: Department of Biological Sciences, Towson University, Towson, Maryland 21252 USA.
authors: John S
authors: JS
authors: LaPolla
authors: Department of Entomology, California Academy of Sciences, Golden Gate Park, 55 Music Concourse Drive, San Francisco, CA 94118 USA.
authors: Brian L
authors: BL
authors: Fisher
keywords: Afrotropics; Madagascar; Paratrechina; Prenolepis; new species; taxonomy