Polyrhachis platyomma

Polyrhachis platyomma
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Formicinae
Tribe:	Camponotini
Genus:	Polyrhachis
Subgenus:	Myrma
Species group:	revoili
Species:	P. platyomma
Binomial name
Polyrhachis platyomma Emery, 1921 Specimen Labels

Nothing is known of the biology of this species, known only from the single worker type.

Identification

A member of the Polyrhachis revoili species-group. Bolton (1973) - Easily separated from all other members of the group by its possession of flattened eyes and an impressed metanotal groove.

Keys including this Species

• Key to Afrotropical Polyrhachis species
• Key to Afrotropical Polyrhachis species (Bolton 1973, OUTDATED)

Distribution

Distribution based on Regional Taxon Lists

Afrotropical Region: Cameroun (type locality).

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

• platyomma. Polyrhachis (Pseudocyrtomyrma) platyomma Emery, 1921e: 24, fig. 3 (w.) CAMEROUN. See also: Bolton, 1973b: 337.

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

Description

Worker

Bolton (1973) - TL 6.1, HL 1.56, HW 1.37, CI 88, SL 1.85, SI 135, PW 1.40, MTL 1.81.

Anterior clypeal margin arcuate and entire, without a rectangular median lobe. Eyes flat, nearly concave, somewhat sunk into the sides of the head. Sides of head convex, rounding into the convex occipital margin behind the eyes. Alitrunk not marginate, the dorsum rounding into the sides. Pronotum armed with a pair of short, triangular, acute spines; the propodeum with a pair of small, upcurved teeth, between which the dorsum curves evenly into the declivity. Promesonotal suture represented only by a line which breaks the sculpturation, but the metanotal groove distinct and impressed. Dorsal surfaces of the alitrunk transversely convex; the pronotum notably broader than the propodeum. Petiole armed with a pair of long dorsal, and a pair of shorter lateral spines. Anterior surface of the first gastral segment concave medially.

Head, body and appendages with numerous long, erect hairs, yellowish to off-white in colour. Pubescence greyish, densest on the alitrunk.

Clypeus superficially reticulate, head regularly and finely longitudinally striate-rugose. Dorsum of alitrunk as head, but the rugae becoming disorganised on the mesonotum and propodeum. Sides of alitrunk finely reticulate-rugose apart from the propodeum which is longitudinally striate-rugose. Gaster finely and densely reticulate-punctate.

Type Material

Bolton (1973) - Holotype worker, CAMEROUN: 9.xi.1895 (L. Conradt) (Museo Civico di Storia Naturale, Genoa) [examined].

References

• Bolton, B. 1973b. The ant genus Polyrhachis F. Smith in the Ethiopian region (Hymenoptera: Formicidae). Bulletin of the British Museum (Natural History) Entomology. 28:283-369. (page 337, see also)
• Emery, C. 1921e. Le genre Polyrhachis. Classification; espèces nouvelles ou critiques. Bull. Soc. Vaudoise Sci. Nat. 54: 17-25 (page 24, fig. 3 worker described)