Overview

Comprehensive Description

Taxonomic History

Taxonomic history

Combination {? in M}.
(Wheelerimyrmex).
{? : Mann, 1922: 29}.
Senior synonym of Megalomyrmex brasiliensis, Megalomyrmex langi, Megalomyrmex misionensis, Megalomyrmex sjostedti, Megalomyrmex wheeleri: Kempf & Brown, 1968: 97.
See also: Brandão, 1990b PDF: 443.
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Biology

Natural History:

Mann (1916) stated "A good series of workers were taken at Ceiba and San Juan Pueblo, nesting in the ground and in rotten logs. It is a timid species and very active when disturbed." Weber (1940) reported three collections of silvestrii (reported as wheeleri; wheeleri synonymized with silvestrii by Kempf and Brown 1968) found in nests of Cyphomyrmex costatus on Barro Colorado Island, Panama. In one nest he found a dealate queen. In a second nest he found a dealate queen and a worker. In a third nest he found 3 dealate queens and 55 workers. However, Brown (in Kempf and Brown 1968) reported finding four nests, two from Barro Colorado Island, one from Cerro Campana, Panama, and one from Santa Teresa, Brazil, that "were nesting independently of other ants so afar as he could tell." Brown's two Barro Colorado nests were "inside a small clod of soil in the leaf litter," and "in a small piece of rotten wood, 10 mm deep and 15 mm wide, also contained many termites." Diniz collected isolated nests of silvestrii in Betim, MG, Brazil (reported in Brandao 1990). Kempf and Brown (1968) suggested that the species is "not so much a parasite as it is a mass-foraging predator that specializes in raiding, and sometimes occupying, the nests of small Attini."

In Costa Rica, I have seen the species only from Winker samples. The samples were from Hitoy Cerere, Osa Peninsula, and Santa Rosa (Bosque humedo).

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silvestrii Wheeler HNS 1909.

Amambay (ALWC). Literature records: Pte. Hayes (Fowler 1981).

  • Wild, A. L. (2007): A catalogue of the ants of Paraguay (Hymenoptera: Formicidae). Zootaxa 1622, 1-55: 33-33, URL:http://www.antbase.org/ants/publications/21367/21367.pdf
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Wild, A. L.

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Distribution

Widespread in Neotropics from Argentina to Mexico. Costa Rica: widespread in lowlands.

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Physical Description

Diagnostic Description

Taxonomic Treatment

Wild, A. L., 2007:
 Amambay (ALWC). Literature records: Pte. Hayes (Fowler 1981).
 
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Amambay (ALWC). Literature records: Pte. Hayes (Fowler 1981).

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Wild, A. L.

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Type Information

Syntype for Megalomyrmex (Cepobroticus) wheeleri Weber
Catalog Number: USNM
Collection: Smithsonian Institution, National Museum of Natural History, Department of Entomology
Collector(s): N. Weber
Year Collected: 1938
Locality: Barro Colo. I.; Canal Zone, Panama
  • Syntype:
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© Smithsonian Institution, National Museum of Natural History, Department of Entomology

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Megalomyrmex silvestrii

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 15
Species With Barcodes: 1
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Wikipedia

Megalomyrmex silvestrii

Megalomyrmex silvestrii is a Neotropical species of ants in the subfamily Myrmicinae. Megalomyrmex silvestrii is widespread in the mainland Neotropics from Mexico to northern Argentina. This species occurs in moist to wet forest habitats, from sea level to 1100 m elevation. It nests in small chambers in rotten wood or opportunistically in other small cavities in the soil. Colonies have been found in small attine nests and alone, suggesting it is a facultative predator of small Attini.[2]

Kempf and Brown (1968) suggested that the species is "not so much a parasite as it is a mass-foraging predator that specializes in raiding, and sometimes occupying, the nests of small Attini." Workers are moderately abundant in Winkler samples of forest floor litter, and workers may visit baits on the forest floor.[2]

References[edit]

  1. ^ a b c d e Longino 2010, p. 37
  2. ^ a b Longino 2010, p. 54
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