Pseudomyrmex eduardi

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Pseudomyrmex eduardi
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Pseudomyrmecinae
Genus: Pseudomyrmex
Species: P. eduardi
Binomial name
Pseudomyrmex eduardi
(Forel, 1912)

Pseudomyrmex eduardi casent0005873 profile 1.jpg

Pseudomyrmex eduardi casent0005873 dorsal 1.jpg

Specimen labels

This species is known to nest in twigs but little else is known regarding its biology.

Identification

Ward (1989) - This species is easily recognized by its combination of small size (HW < 0.58), dark color, and smooth shiny appearance (especially on the head and mesosoma dorsum). The sculpture in the middle of the head between the compound eyes is particularly characteristic, consisting of very fine punctures and a few slightly coarser ones. All other species in the P. oculatus group have denser, coarser punctate sculpture on this part of the head.

Distribution

Bolivia, Brazil, Colombia, Costa Rica, Jamaica, Panama, Peru, Venezuela

Distribution based on Regional Taxon Lists

Neotropical Region: Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Greater Antilles, Jamaica (type locality), Panama, Paraguay, Venezuela.


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Ward (1989) - I collected colonies of P. eduardi in dead twigs of Conocarpus erectus and Avicennia germinans in mangrove in Venezuela. Other biological collection data include: in tree fall, wet forest (Costa Rica), dead stem of beach tree (Manaus, Brazil), in rain forest (Huanuco, Peru).

Castes

Queen

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • eduardi. Pseudomyrma eduardi Forel, 1912g: 29 (w.) JAMAICA. Combination in Pseudomyrmex: Kempf, 1972a: 217. See also: Ward, 1989: 418.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Ward (1989) - measurements (n=11). HL 0.74-0.80, HW 0.50-0.57, MFC 0.009-0.018, CI 0.67-0.72, OI 0.53-0.59, REL 0.52-0.55, REL2 0.74-0.79, OOI 0.28-0.70, VI 0.79-0.86, FCI 0.017-0.032, SI 0.43-0.47, SI2 0.55-0.62, FI 0.46-0.53, POI 0.93-1.31, MPI 0.039-0.073, NI 0.52-0.64, PLI 0.79-0.92, PWI 0.62-0.72, PPWI 1.19-1.50.

diagnosis. Similar to Pseudomyrmex caeciliae (q.v.) in size, shape, and color; differing in sculpture - head largely smooth and shining, with scattered fine punctures which become coarser (but still somewhat effaced) in the region posterior to the compound eye; the punctulate-coriarious sculpture of the mesosoma is also somewhat effaced, producing rather strongly shining areas in the centre of the mesosoma dorsum and on the side of the propodeum: petiole, postpetiole, and gaster with a shinier appearance than in P. caeciliae, although still covered with moderately dense pubescence. Dark brown, the mandibles and tarsi lighter.

Type Material

Ward (1989) - Holotype (unique syntype) worker, Kingston, Jamaica (Forel) (Musee d'Histoire Naturelle Genève) [Examined].

References

  • Forel, A. 1912h. Formicides néotropiques. Part IV. 3me sous-famille Myrmicinae Lep. (suite). Mém. Soc. Entomol. Belg. 20: 1-32 (page 29, worker described)
  • Kempf, W. W. 1972b. Catálogo abreviado das formigas da regia~o Neotropical. Stud. Entomol. 15: 3-344 (page 217, Combination in Pseudomyrmex)
  • Ward, P. S. 1989a. Systematic studies on pseudomyrmecine ants: revision of the Pseudomyrmex oculatus and P. subtilissimus species groups, with taxonomic comments on other species. Quaest. Entomol. 25: 393-468 (page 418, see also)