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Camponotus repens species group
Based on Rasoamanana and Fisher 2022.
Species
Identification
Key to Malagasy Camponotus subgenus Mayria minor workers
Diagnosis
Workers of the C. repens group can be diagnosed by the integument being black and shiny in appearance, and the presence of erect white setae along the entire dorsum, all of which are about the same length and transversely arranged, except in C. jjacquia, which has filiform and relatively medium-sized setae. Median portion of clypeus with longitudinal carina; dorsum of mesosoma covered with numerous, slender, erect hairs of about the same length; in lateral view, petiolar node higher than long. Metanotal spiracle obvious, surrounded by shallow depression, not as in C. christi species group. The best method to discriminate between the Camponotus repens species group and all other species stated in the Rakotonirina et al. (2018) Camponotus christi species group (?), is to compare the anterodorsum of pronotal margin and the mesosomal pilosity. In the C. repens group, in dorsal view, the pronotal disc is rectangular and pilosity consists of thick, whitish, erect hairs. By contrast, in the C. christi group, in dorsal view, the pronotal disc is semicircular, and pilosity consists of slender, filiform hairs.
Major and Minor workers - With head in full-face view, clypeus carinate medially, its anterior margin forming a triangular lobe except for C. repens, which has a truncate anteromedian margin; dorsum of body covered with numerous slender, whitish, erect hairs and abundant, elongated pubescence. In lateral view, pronotum weakly convex with anterolateral portion marginate; promesonotal suture slightly depressed (Fig.10B, D). Petiole nodiform except C. claveri. Head, mesosoma, and gaster black; legs generally much lighter in color than body. Integument shiny black.
Minor worker - In full-face view, head oval, with broadly convex posterior margin and lateral sides almost straight.
Major worker - In full-face view, head rectangular, posterior and lateral margins weakly convex.
Notes
This group diagnosis refers to the Camponotus christi species group, citing Rakotonirina et al. (2018). There is no such species groups defined in the 2018 or 2022 publications.