Adetomyrma caudapinniger, sp. nov.
Creators: name: Yoshimura, Masashi
name: Fisher, Brian L.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Adetomyrma
Adetomyrma caudapinniger

description: Adetomyrma caudapinniger sp. nov.
(Figs 19, 33, 42, 51, 59, 68)
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. [CASC]
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]
Worker and queen unknown.
Male. 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 (Fig 51), 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 (Fig 42). Parapsidal line clearly impressed. Anterior margin of petiole shorter than dorsal margin in lateral view (Fig 33). 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 (Fig 19). 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 as in Figure 59; 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 0.25× 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 (Fig 33).
Etymology. 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.
Distribution. MADAGASCAR: as in Figure 68.
Additional material examined: in addition to the type material, specimens from the following localities were examined in this study: MADAGASCAR. Miandritsara Forest, 40 km S of Ambositra, 20° 47.56´S, 47° 10.54´E, 822 m alt., low altitude rainforest; Belle Vue trail, Ranomafana National Park, Fianarantsoa Prov., 21° 15.99´S, 47° 25.21´E, 1020 m alt., mixed tropical forest.
Remarks. This species is only known from males. The male of Adetomyrma caudapinniger is distinguished easily from other Adetomyrma males by its bilobed paramere (Fig 19) 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, A. aureocuprea, which is superficially similar to A. caudapinniger, has a simple paramere (Fig 20) and a 3,3 palpal formula.
This new species corresponds to the following species code used in previous studies:
mgm05 (in part): Yoshimura & Fisher 2012.
description: Published as part of Yoshimura, Masashi & Fisher, Brian L., 2012, A revision of the Malagasy endemic genus Adetomyrma (Hymenoptera: Formicidae: Amblyoponinae), pp. 1-31 in Zootaxa 3341 (1) on page 20, DOI: 10.11646/zootaxa.3341.1.1, http://zenodo.org/record/213817