Phrynoponera sveni

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Phrynoponera sveni
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Genus: Phrynoponera
Species: P. sveni
Binomial name
Phrynoponera sveni
(Forel, 1916)

Phrynoponera sveni casent0081254 profile 1.jpg

Phrynoponera sveni casent0081254 dorsal 1.jpg

Specimen labels

Samples of this species have been collected from rotten logs, in leaf litter samples, in pitfall traps, and from termitaries.

Identification

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Cameroun, Central African Republic, Democratic Republic of Congo (type locality), Gabon, United Republic of Tanzania.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Worker

Queen

Nomenclature

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

  • sveni. Pachycondyla (Bothroponera) sveni Forel, 1916: 398 (w.) DEMOCRATIC REPUBLIC OF CONGO. Combination in Phrynoponera: Wheeler, W.M. 1922a: 80. See also: Bolton & Fisher, 2008b: 49.

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

Description

Worker

Bolton and Fisher (2008) - TL 10.5-11.4, HL 2.20-2.36, HW 2.15-2.26, CI 95-98, SL 1.88-2.00, SI 86-91, PW 1.76-1.88, WL 3.20-3.48, maximum diameter of eye 0.52-0.58, OI 24-27 (7 measured).

Mandible with 4 teeth, smooth with scattered setal pits; some fine striation also may be present. Median portion of anterior clypeal margin shallowly convex to almost flat, lacking a prominent tooth on each side of the midline. Dorsum of head irregularly rugose to reticulate-rugose medially, the rugae sometimes smeared and confluent, chaotic rather than well defined. More laterally on dorsum the sculpture becomes more strongly reticulate-rugose, never with sharply defined costulae that radiate from the midline. Outer pair of petiolar spines very much longer than the median spine; intermediate spines slender and distinctly shorter than the median. Gastral tergites 1 and 2 finely longitudinally costulate on a reticulate-punctate background sculpture. Gastral tergite 3 reticulate-punctate only, or with a few feeble costulae present. Mesosoma, petiole and gaster with patches of cuticle that show dull metallic blue reflections.

All specimens examined had 4 teeth on the mandible, but because other species show some variation in this, individuals with 5 teeth are probably to be expected. Cephalic sculpture is coarse and disorganised. In some specimens the reticulate rugae are quite sharply defined everywhere, the reticulae becoming more broad towards the lateral margins. In others, the rugae near the midline are close-packed and blunted, the reticulae small, and the overall appearance is of coarse but chaotic sculpture. In some other species, blue metallic reflections are frequent on the propodeal declivity and elsewhere, but in sveni they are more widely distributed and appear always to be present.

Type Material

Bolton and Fisher (2008) - Syntype workers, DEMOCRATIC REPUBLIC OF CONGO: no loc. (Kohl) (Musee d'Histoire Naturelle Genève) [examined].

References

  • Bolton, B. and B. L. Fisher. 2008. The Afrotropical ponerine ant genus Phrynoponera Wheeler. Zootaxa. 1892:35-52. PDF
  • Forel, A. 1916. Fourmis du Congo et d'autres provenances récoltées par MM. Hermann Kohl, Luja, Mayné, etc. Rev. Suisse Zool. 24: 397-460 (page 398, worker described)
  • Wheeler, W. M. 1922b. Ants of the American Museum Congo expedition. A contribution to the myrmecology of Africa. II. The ants collected by the American Museum Congo Expedition. Bull. Am. Mus. Nat. Hist. 45: 39-269 (page 80, Combination in Phrynoponera)