Pseudomyrmex holmgreni
| 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)
| |
Contents
Identification
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
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
Biology
This species is a host for the ant Pseudomyrmex filiformis (a temporary parasite) (Ward, 1996).
Castes
Worker
- The following images are provided by AntWeb
Head view
Side view
Top view
Specimen labels
Head view
Side view
Top view
Specimen labels
Male
- The following images are provided by AntWeb
Head view
Side view
Top view
Specimen labels
Nomenclature
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
- Lectotype (designated by Ward (1989)), worker, Chaquimayo, Peru, N. Holmgren, Naturhistoriska Riksmuseet.
- Paralectotype (designated by Ward (1989)), worker, Chaquimayo, Peru, N. Holmgren, Naturhistoriska Riksmuseet.
Description
Karyotype
- 2n = 50, karyotype = 6M+44A or 2M+48A (Brazil) (Sposito et al., 2006).
References
- 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)
