Chapter

Descriptions of Generic-Level Outgroup Taxa

John E. Lattke

in A Taxonomic Revision and Phylogenetic Analysis of the Ant Genus Gnamptogenys Roger in Southeast Asia and Australasia (Hymenoptera: Formicidae: Ponerinae)

Published by University of California Press

Published in print April 2004 | ISBN: 9780520098442
Published online March 2012 | e-ISBN: 9780520916043 | DOI: http://dx.doi.org/10.1525/california/9780520098442.003.0004
Descriptions of Generic-Level Outgroup Taxa

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This chapter presents descriptions of generic-level outgroup taxa, namely: Heteroponera Mayr, Platythyrea Roger, Ectatomma F. Smith, and Rhytidoponera impressa group. The genus Heteroponera is found in the Neotropical and Australasian regions, while Platythyrea is found throughout the tropics. The genus Ectatomma is exclusively Neotropical in distribution. The posterior cephalic lobes present in some members of this group differ from the lobes in Gnamptogenys, which are of occipital origin, while in Ectatomma they originate in the vertex. The species of the impressa group are found in mesic forested areas of eastern Australia and in New Guinea. This group of species is considered to be one of the more plesiomorphic groups within the genus because of its reproductive biology and habitat preference.

Keywords: Heteroponera; Platythyrea; Ectatomma; Rhytidoponera impressa; tropics; cephalic lobes; Australia; New Guinea

Chapter.  3413 words. 

Subjects: Zoology and Animal Sciences

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