Strumigenys tanymastax

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Strumigenys tanymastax
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. tanymastax
Binomial name
Strumigenys tanymastax
(Brown, 1964)

Pyramica tanymastax casent0178122 profile 1.jpg

Pyramica tanymastax casent0178122 dorsal 1.jpg

Specimen labels

Little is known about the biology of this species. A few workers were collected from litter sampling in dry chaco.


The only member of the Strumigenys tanymastax-group.

Keys including this Species


Distribution based on Regional Taxon Lists

Neotropical Region: Brazil (type locality), Paraguay, Venezuela.

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb




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

  • tanymastax. Smithistruma tanymastax Brown, 1964a: 183, pl. 16, fig. 1 (w.) BRAZIL. Combination in Pyramica: Bolton, 1999: 1673; in Strumigenys: Baroni Urbani & De Andrade, 2007: 128. See also: Bolton, 2000: 241.

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



Bolton (2000) - TL 1.6-1.8, HL 0.44-0.48, HW 0.30-0.33, CI 68-71, ML 0.11-0.12, MI 25-27, SL 0.25-0.28, SI 82-88, PW 0.20-0.24, AL 0.43-0.47 (4 measured).

Apicoscrobal hair long, fine and flagellate; cephalic dorsum above apicoscrobal hair with an erect elongate fine hair that is quite distinct from the ground-pilosity. Ground-pilosity of cephalic dorsum of long curved hairs that are simple to narrowly spatulate, much longer and narrower than those on the clypeus. Eye with 3-6 ommatidia in total. Dorsum of head and alitrunk, and declivity of propodeum, reticulate-punctate. Pleurae and side of propodeum smooth and shining. Ground-pilosity of dorsal alitrunk of long medially-curved hairs, the mesonotum also with a pair of very long fine flagellate hairs. Fine curved to flagellate hairs also occur on dorsal surfaces of waist segments and first gastral tergite. Dorsal (outer) surfaces of hind tibiae with narrowly spatulate curved hairs that are all directed toward the apex. Petiole node weakly punctate dorsally, broader than long; postpetiole much broader than long and glassy smooth. Basigastral costulae sharply defined and evenly spaced, the tergite between and behind them smooth and shining.

Type Material

Bolton (2000) - Holotype worker, BRAZIL: Santa Catarina, Nova Teutonia, 300-500 m., (F. Plaumann) Museu de Zoologia da Universidade de Sao Paulo; paratype worker, BRAZIL: SC, Chapecó, v. 1957 (F. Plaumann) Museum of Comparative Zoology. [examined].