Polyrhachis gibbosa

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Polyrhachis gibbosa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Polyrhachis
Subgenus: Myrma
Species group: aculeata
Species complex: aculeata
Species: P. gibbosa
Binomial name
Polyrhachis gibbosa
Forel, 1908

Polyrhachis gibbosa casent0910939 p 1 high.jpg

Polyrhachis gibbosa casent0910939 d 1 high.jpg

Specimen Labels


A member of the Polyrhachis aculeata species group in the subgenus Myrma

Kohout (2013): Polyrhachis gibbosa differs from the other species of the aculeata complex by the dorsal body surfaces being only partly polished and the mesonotum and propodeum being more distinctly sculptured. The mesosoma also appears somewhat shorter and relatively broad, with the pronotal spines only about as long as the width at their bases and the mesosomal dorsum is highly convex in lateral view. The body is entirely black with rather abundant, silvery, appressed pubescence, notably on the pronotal collar and along the dorsolateral margins and sides of the mesosoma.

Keys including this Species


Distribution based on Regional Taxon Lists

Oriental Region: Sri Lanka (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.

  • gibbosa. Polyrhachis aculeata var. gibbosa Forel, 1908a: 9 (w.) SRI LANKA. Forel, 1913k: 139 (footnote) (q.). Combination in P. (Myrma): Emery, 1925b: 205. Raised to species: Kohout, 2008a: 258.

Type Material

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



Kohout (2013): Dimensions (syntypes): TL c. 5.85-6.35; HL 1.59-1.62; HW 1.31-1.37; CI 82-84; SL 1.87-1.93; SI 141-143; PW 1.18-1.25; MTL 1.87-1.96 (2 measured).