Adetomyrma caudapinniger

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Adetomyrma caudapinniger
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Amblyoponinae
Tribe: Amblyoponini
Genus: Adetomyrma
Species: A. caudapinniger
Binomial name
Adetomyrma caudapinniger
Yoshimura & Fisher, 2012

Adetomyrma caudapinnigera casent0244402 p 1 high.jpg

Adetomyrma caudapinnigera casent0244402 d 1 high.jpg

Paratype Labels

Known from a small number of males from two localities. All the specimens were collected with a malaise trap,


Yoshimura and Fisher (2012) - The male of Adetomyrma caudapinniger is distinguished easily from other Adetomyrma males by its bilobed paramere and 2,2 palpal formula. These characters, as well as those observed in the aedeagus, are unique to Adetomyrma caudapinniger, and a separation of this species from the remaining Adetomyrma species is clear and consistent. For example, Adetomyrma aureocuprea, which is superficially similar to A. caudapinniger, has a simple paramere and a 3,3 palpal formula.

Yoshimura and Fisher. 2012. Fig 19-20.

Keys including this Species


Latitudinal Distribution Pattern

Latitudinal Range: -19.006727° to -21.2775°.

Tropical South

Distribution based on Regional Taxon Lists

Malagasy Region: Madagascar (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.




Known only from the male caste.



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

  • caudapinniger. Adetomyrma caudapinniger Yoshimura & Fisher, 2012b: 20, figs. 19, 33, 42, 51, 59, 68 (m.) MADAGASCAR.
    • Type-material: holotype male, 2 paratype males.
    • Type-locality: holotype Madagascar: Fianarantsoa, Miandritsara Forest, 40 km. S Ambositra, 20°47.56’S, 47°10.54’E, 822 m., 15-24.i.2007, MG-29-75, CASENT0244415, low altitude rainforest, Malaise trap (Rin’Ha, Mike); paratypes: 1 male with same data but CASENT0244416, 1 male with same data but MG-29-76, 24-31.i.2007, CASENT0244402.
    • 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.



Measurements: holotype. HL 0.57, HW 0.86, SL 0.2, EL 0.39, WL 1.48, MnW 0.93, CI 151.3, SI 23.4, EI 68.1, MnI 107.8.

HL 0.51–0.6, HW 0.71–0.88, SL 0.15–0.2, EL 0.36–0.43, WL 1.26–1.6, MnW 0.75–0.98, CI 138.6–147.5, SI 21.2–23.4, EI 66.5–71.8, MnI 103.2–111.1 (2 paratypes and 2 individuals measured).

Eye well-developed and prominent, posterior margin not exceeding the posterior margin of mid ocellus in full-face view. Distance between lateral ocellus and eye as long as or slightly longer than diameter of lateral ocellus. Palpal formula 2,2 (two maxillary and two labial). Notaulus absent on mesoscutum. Parapsidal line clearly impressed. Anterior margin of petiole shorter than dorsal margin in lateral view. Subpetiolar process developed as spinose with one to two hairs ventrally.

Left and right parameres not overlapping or narrowly overlapping on dorsal small part of basimere. Distinct lobe present on posterodorsal portion of paramere, making posterior portion appearing bilobed. Basal ring not reduced, covering whole anterior margin of paramere in lateral view. Basal projection on cuspis clear but not extraordinarily well developed. Aedeagus in lateral view slightly narrowed after ventral projection; apical margin with two distinct apices, one relatively blunt and one with a small ventral projection; posteroventral margin of ventral projection somewhat concave.

Hair on compound eyes short, less than 0.25X diameter of mid ocellus. Mesofemur in dorsal view, anterior face with dense subdecumbent hairs, and often with several longer subdecumbent hairs. Ventral margin of eye not edged with darker pigment or punctures. Body weakly bicolored, head darker than the rest of the body.

Type Material

Holotype. Male: CASENT0244415, MG-29-75: MADAGASCAR, Fianarantsoa, Miandritsara Forest, 40 km S of Ambositra, 20° 47.56´ S, 47° 10.54´ E, 822 m alt., low altitude rainforest, Malaise trap, 15–24.i.2007, Rin'ha, Mike leg. California Academy of Sciences. Paratypes. 1 male: CASENT0244416, with same data as holotype [CASC]; 1 male: CASENT0244402, MG-29–76: same locality and method as holotype, 24–31.i.2007, Rin'ha, Mike leg. [CASC]


This species name is derived from the Latin words caudapinna (tail fin) and gero (have), referring to the distinctive paramere. Pinniger can be both a noun and adjective, but is treated as a noun here, and thus invariant.

Determination Clarifications

This new species corresponds to the following species code used in previous studies: mgm05 (in part): Yoshimura & Fisher 2012.


References based on Global Ant Biodiversity Informatics

  • Yoshimura M., B.L. Fisher. 2012. A revision of the Malagasy endemic genus Adetomyrma (Hymenoptera: Formicidae: Amblyoponinae). Zootaxa 3341: 1-31.
  • Yoshimura, M., and B. L. Fisher. "A revision of the Malagasy endemic genus Adetomyrma (Hymenoptera: Formicidae: Amblyoponinae)." Zootaxa 3341 (2012): 1-31.