Pseudomyrmex holmgreni

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Pseudomyrmex holmgreni
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Pseudomyrmecinae
Genus: Pseudomyrmex
Species: P. holmgreni
Binomial name
Pseudomyrmex holmgreni
(Wheeler, W.M., 1925)

Pseudomyrmex holmgreni casent0173756 profile 1.jpg

Pseudomyrmex holmgreni casent0173756 dorsal 1.jpg

Specimen labels


Ward (1989) - Contrary to statements in the original description, this widespread South American species is not closely related to Pseudomyrmex filiformis. Rather, it is a member of the P. pallidus group, bearing some resemblance to Pseudomyrmex euryblemma (q.v.) but differing in the following worker characters: metanotal groove wider and more deeply incised; basal face of propodeum subequal in length to declivitous face (longer than the declivitous face in P. euryblemma); and head tending to be more elongate, with the sides rounding more gradually into the occipital margin. The workers and queens of P. holmgreni vary considerably in color, from concolorous orange to dark brown, including intermediate forms with variable degrees of infuscation of the body.


Distribution based on Regional Taxon Lists

Neotropical Region: Paraguay, Peru (type locality), Trinidad and Tobago.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


This species is a host for the ant Pseudomyrmex filiformis (a temporary parasite) (Ward, 1996).





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

  • holmgreni. Pseudomyrma holmgreni Wheeler, W.M. 1925a: 11 (w.) PERU. Combination in Pseudomyrmex: Kempf, 1972a: 220. See also: Ward, 1989: 440.

Type Material



  • 2n = 50, karyotype = 6M+44A or 2M+48A (Brazil) (Sposito et al., 2006).


  • Kempf, W. W. 1972b. Catálogo abreviado das formigas da regia~o Neotropical. Stud. Entomol. 15: 3-344 (page 220, 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 440, see also)
  • Wheeler, W. M. 1925a. Neotropical ants in the collections of the Royal Museum of Stockholm. Ark. Zool. 17A(8 8: 1-55 (page 11, worker described)