Strumigenys vivax

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Strumigenys vivax
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. vivax
Binomial name
Strumigenys vivax
Bolton, 2000

Strumigenys vivax casent0900434 p 1 high.jpg

Strumigenys vivax casent0900434 d 1 high.jpg

Specimen Labels

Known from the holotype worker, nothing is known about the biology of Strumigenys vivax.


Bolton (2000) - A member of the Strumigenys trinidadensis-group. Only the holotype of this species is known. Its relationship with Strumigenys trinidadensis is obvious and striking but the very different dentitions immediately isolate the two species.

Keys including this Species


Distribution based on Regional Taxon Lists

Neotropical Region: Ecuador (type locality).

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.

  • vivax. Strumigenys vivax Bolton, 2000: 567 (w.) ECUADOR.

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



Holotype. TL 3.8, HL 0.89, HW 0.73, CI 82, ML 0.63, MI 71, SL 0.67, SI 92, PW 0.43, AL 0.98. With characters of species group and mostly answering to the description of Strumigenys trinidadensis, but with radically different preapical dentition. Inner margin of mandible with a single inconspicuous preapical denticle that in full-face view does not break the outline of the margin; denticle arises at about one-third the distance from the apical tooth to the base.

Apart from this the single specimen of vivax is slightly larger than the largest trinidadensis specimen seen, though shortage of material means this may not be significant. The lower propodeal lobe in vivax is triangular, acute apically and distinctly broader-based than the tooth at the propodeal apex. The ventral spongiform crest of the petiole commences at about the midlength of the peduncle and becomes deeper posteriorly.

Type Material

Holotype worker, Ecuador: Napo, Rio Hollin, ca 1000 m., 12.ii.1993, mag. 1406 (L. Bartolozzi) (The Natural History Museum). Dr Luca Bartolozzi (Museo Zoologico "La Specola") has kindly agreed that the holotype should be retained in the BMNH collection.


  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 567, worker described)