Strumigenys noara

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

Strumigenys noara casent0080173 p 1 high.jpg

Strumigenys noara casent0080173 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Strumigenys noara.

Identification

Bolton (2000) - A member of the emarginata complex in the Strumigenys emarginata group. This is the only known member of the emarginata-complex to lack spoon-shaped hairs on the pronotum and to have abundant standing pronotal hairs together with a stiff hair at the humerus. It is also the only known member of the complex that has freely laterally projecting hairs on the posterior portion of the dorsolateral margin of the head.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: South Africa (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.

  • noara. Pyramica noara Bolton, 2000: 304 (w.) SOUTH AFRICA. Combination in Strumigenys: Baroni Urbani & De Andrade, 2007: 125

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

Description

Worker

Holotype. TL 2.3, HL 0.66, HW 0.41, CI 62, ML 0.11, MI 17, SL 0.31, SI 76, PW 0.26, AL 0.64. Characters of emarginata-complex. With head in full-face view dorsolateral margin behind level of eye with 5 - 6 freely laterally projecting curved hairs that are blunt or feebly thickened apically. Ground-pilosity of head short, narrowly spatulate and inconspicuous; appressed ground-pilosity on clypeal dorsum only fractionally broader. Anterior clypeal margin only extremely shallowly concave, almost transverse. With head in profile the dorsum, from just in front of the highest point of the vertex to the occipital margin, with numerous short standing hairs that are simple to slightly flattened, feebly curved anteriorly, and very distinctly differentiated from the ground-pilosity. Pleurae and side of propodeum reticulate to reticulate-punctate everywhere. Pronotum and mesonotum with numerous stout erect simple hairs that are mostly shallowly curved. Pronotal ground-pilosity of extremely sparse narrow subreclinate short simple hairs; without spoon-shaped hairs anywhere on the promesonotal dorsum. Pronotal humerus with a stiff straight hair that is slightly stouter than any other on the pronotal dorsum; the latter weakly sculptured with feeble longitudinal rugulae and scattered punctures.

Type Material

Holotype worker, South Africa: Natal, Pietermaritzburg, Town Bush, iii.1978 (D.J. Brothers) (The Natural History Museum).

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. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028. (page 304, worker described)