Nesomyrmex anduzei (Weber 1943)

Myrmicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia

worker lateral view

worker face view


Venezuela, Colombia, Costa Rica. Costa Rica: lowland wed forests of both slopes.


Antennae 12-segmented; petiolar peduncle shorter than node; antennal scapes in repose surpassing vertex margin; color orange.

Natural History

Nesomyrmex anduzei is a rare element of lowland rainforest canopy. I have found workers in seven fresh treefalls, three on the Osa Peninsula and four at La Selva Biological Station. In one of the treefalls on the Osa, I observed workers carrying brood into a hole in a knot that went deep into a large live branch. I have never found a foraging worker at ground level. In the canopy fogging program carried out by the ALAS project at La Selva, N. anduzei has been collected in 4 of 52 fogged trees.


At the time of Kempf's 1959 revision, this species was known only from two collections: the type series of several workers from Venezuela, and a worker from Colombia.

The types at MCZ have contrasting dark brown heads, and the head seems relatively shorter and broader than Costa Rican material.

Page author:

John T. Longino, The Evergreen State College, Olympia WA 98505 USA.

Date of this version: 5 September 2004.
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