Strumigenys splendens

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Strumigenys splendens
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Strumigenys
Species: S. splendens
Binomial name
Strumigenys splendens
(Borgmeier, 1954)

Strumigenys splendens casent0281989 p 1 high.jpg

Strumigenys splendens casent0281989 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Strumigenys splendens.

Identification

Bolton (2000) - A member of the Strumigenys splendens-group. S. splendens stands out as the most generalised species in the group, being easily characterised by its lack of specialised features: no strange specialisations of the clypeus, no concealment of preocular carinae, no marked shortening of scapes, no pronotal margination, no flagellate hairs, no projecting tibial hairs. It looks like, and may very well be, the sister of all the other species in the group.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina, Brazil (type locality).


Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Strumigenys were once thought to be rare. The development and increased use of litter sampling methods has led to the discovery of a tremendous diversity of species. Many species are specialized predators (e.g. see Strumigenys membranifera and Strumigenys louisianae). Collembola (springtails) and other tiny soil arthropods are typically favored prey. Species with long linear mandibles employ trap-jaws to sieze their stalked prey (see Dacetine trap-jaws). Larvae feed directly on insect prey brought to them by workers. Trophallaxis is rarely practiced. Most species live in the soil, leaf litter, decaying wood or opportunistically move into inhabitable cavities on or under the soil. Colonies are small, typically less than 100 individuals but in some species many hundreds. Moist warm habitats and micro-habitats are preferred. A few better known tramp and otherwise widely ranging species tolerate drier conditions. Foraging is often in the leaf litter and humus. Workers of many species rarely venture above ground or into exposed, open areas. Individuals are typically small, slow moving and cryptic in coloration. When disturbed individuals freeze and remain motionless. Males are not known for a large majority of species.

Castes

Nomenclature

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

  • splendens. Gymnomyrmex splendens Borgmeier, 1954b: 279, figs. 1-6 (w.) BRAZIL. Kempf, 1959d: 339 (q.). Combination in Pyramica: Bolton, 1999: 1672; in Strumigenys: Baroni Urbani & De Andrade, 2007: 128. See also: Bolton, 2000: 236.

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

Description

Worker

Bolton (2000) - TL 2.4 - 2.6, HL 0.63-0.68, HW 0.39-0.43, CI 61-63, ML 0.09-0.10, MI 14-15, SL 0.30-0.32, SI 72-80, PW 0.25-0.27, AL 0.68-0.70 (4 measured).

With head in full-face view clypeus not expanded laterally, outer margins of mandibles visible almost to level of preocular carinae. Frontal lobes and frontal carinae not strongly expanded laterally, in full-face view the preocular carinae fully exposed and the outer curvature of the eye visible. With mandibles at full closure exposed length of basal lamella only fractionally less than length of tooth row. Dorsum of head smooth and shining except for fine sculpture on upper scrobe margins. Dorsolateral margins of head and pronotal humeri without projecting hairs of any form. Dorsal surfaces of head and alitrunk without hairs but short fine hairs present on waist segments and near base of first gastral tergite. Dorsal (outer) surfaces of middle and hind tibiae with minute appressed pubescence only. Pronotum without trace of lateral margination, evenly transversely convex and unsculptured. Propodeal dorsum feebly, petiole node more strongly, reticulate-punctate.

Type Material

Bolton (2000) - Holotype worker, BRAZIL: Santa Catarina, Nova Teutonia, 300-500 m, x.1953 (F. Plaumann) (Museu de Zoologia da Universidade de Sao Paulo, Museum of Comparative Zoology) [examined].

References

  • Baroni Urbani, C. & De Andrade, M.L. 2007. The ant tribe Dacetini: limits and constituent genera, with descriptions of new species. Annali del Museo Civico di Storia Naturale “G. Doria”. 99:1-191.
  • Bolton, B. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). J. Nat. Hist. 3 33:1639-1689 (page 1672, combination in Pyramica)
  • Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 236, fig. 158 redescription of worker)
  • Borgmeier, T. 1954b. Two interesting dacetine ants from Brazil (Hym., Formicidae). Rev. Bras. Biol. 14:279-284 PDF
  • Cuezzo, F. 1999. Nuevas citas de hormigas de las tribus Dacetini y Basicerotini (Hymenoptera: Formicidae) para la República Argentina. Rev. Soc. Entomol. Argent. 58(3/4):209-210 (page 209, record Argentina)
  • Kempf, W. W. 1959f. Two new species of Gymnomyrmex Borgmeier, 1954 from southern Brazil, with remarks on the genus (Hymenoptera, Formicidae). Rev. Bras. Biol. 19:337-344 (page 339, description of queen)
  • Kempf, W. W. 1960f. Miscellaneous studies on Neotropical ants (Hymenoptera, Formicidae). Stud. Entomol. (n.s.) 3:417-466 (page 452, catalogue)
  • Kempf, W. W. 1972b. Catálogo abreviado das formigas da regia~o Neotropical. Stud. Entomol. 15:3-344 (page 116, catalogue)