Camponotus harenarum

AntWiki: The Ants --- Online
Camponotus harenarum
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Subgenus: Myrmosaga
Species: C. harenarum
Binomial name
Camponotus harenarum
Rakotonirina & Fisher, 2022

Camponotus harenarum 57a.jpg

Camponotus harenarum 57c.jpg

Endemic to Madagascar, C. harenarum is only known from the littoral rainforest of Analabe in Daraina, in the northeastern region of the island. This species has been found nesting in rotten logs and foraging on the forest floor and on lower vegetation.

Identification

Rakotonirina and Fisher (2022) - With head in full-face view, eye not breaking lateral cephalic margin; mesonotum short and lacking constriction; propodeal dorsum transversely medially concave at ca. posterior 1/2; petiolar node ca. as high as long.

Camponotus harenarum can be confounded with Camponotus karsti, but the latter has a more sloping anterior portion of the propodeum that makes a noticeable angle with the posterior region, and a shorter anterior margin of the petiolar node.

Keys including this Species

Distribution

Distribution based on Regional Taxon Lists

Malagasy Region: Madagascar (type locality).

Distribution based on AntMaps

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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.
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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.
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Biology

Castes

Known only from the minor caste.

Nomenclature

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

  • harenarum. Camponotus harenarum Rakotonirina & Fisher, 2022: 97, figs. 5B, 57 (w.) MADAGASCAR.
    • Type-material: holotype minor worker, 1 paratype minor worker.
    • Type-locality: holotype Madagascar: Antsiranana, Forêt d’Analabe, 30 km. 72° ENE Daraina, -13.08333, 49.90833, 30 m., 28.xi.2003, BLF09544 (B.L. Fisher, et al.); paratype with same data but BLF09463.
    • Type-depository: CASC.
    • Distribution: Madagascar.

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

Description

Worker

Morphological measurements: see Appendix 1 and Ratios of morphometric data for majors and minors

Minor With head in full-face view, lateral margins anterior to eye level approximately parallel, progressively rounding evenly towards slightly concave rear margin; eye protruding and large (EL/CS: 0.25±0.01; 0.25–0.26), not breaking lateral cephalic margin, location of its posterior margin at posterior 1/3 of head (PoOc/CL: 0.28±0.01; 0.27–0.29); frontal carinae not widely opened posteriorly, (FR/CS: 0.25±0.00; 0.24–0.25); clypeus without anterolateral angle, anteromedian margin broadly convex; mandible with two apical teeth normally spaced; antennal scape relatively long (SL/CS: 1.63±0.05; 1.58–1.70). Promesonotum noticeably convex, metanotal groove noticeably visible; anterior portion of propodeal dorsum convex, then concave and becoming straight with blunt angle to declivity surface. Petiole nodiform, anterior and posterior margins approximately the same height, dorsal margin separated by an angle from the anterior and gently rounding to the posterior.

First and second gastral tergites without a pair of white spots; erect hairs on lateral margin of head present anterior to and behind eye level; posterior margin of head with two elongate, erect hairs; antennal scape covered with erect hairs; junction of propodeal dorsum and declivity with two pairs of erect hairs. Body color orange-brown with darker coxa, junction of segments, abdominal sternites, and appendices.

Type Material

  • Holotype worker. MADAGASCAR: Province Antsiranana: Forêt d’Analabe, 30 km 72° ENE Daraina, -13.08333, 49.90833, 30 m, littoral rainforest, ground forager, 28 Nov 2003 (B.L. Fisher et al.) collection code: BLF09544, specimen code: CASENT0499207 (CAS).
  • Paratype. 1 minor worker of same data as holotype but with collection code: BLF09463 and specimen code: CASENT0499217 (CAS).

Etymology

The species name harenarum is a Latin plural noun in the genitive case of harena, which means sand. It is in reference to the littoral rainforest, the only habitat in which it has been found.

References