Adetomyrma cassis, Yoshimura, Masashi & Fisher, Brian L., 2012

Yoshimura, Masashi & Fisher, Brian L., 2012, A revision of the Malagasy endemic genus Adetomyrma (Hymenoptera: Formicidae: Amblyoponinae), Zootaxa 3341 (1), pp. 1-31 : 19

publication ID	https://doi.org/ 10.11646/zootaxa.3341.1.1
DOI	https://doi.org/10.5281/zenodo.5874333
persistent identifier	https://treatment.plazi.org/id/03BDEF36-F51F-9404-FFAB-41CCDE108FCA
treatment provided by	Plazi
scientific name	Adetomyrma cassis
status	sp. nov.

Treatment

Adetomyrma cassis View in CoL sp. nov.

( Figs 14 View FIGURES 13 – 14 , 15 View FIGURES 15 – 16 , 32 View FIGURES 29 – 37 , 41 View FIGURES 38 – 46 , 50 View FIGURES 47 – 55 , 67 View FIGURES 64 – 72 )

Holotype. Male: CASENT0163620 , BLF24309 : MADAGASCAR, Toamasina, Réserve Spéciale Ambatovaky , Sandrangato river , 16° 46.36´S, 49° 15.93´E, 450 m alt., rainforest, 4 Malaise traps, 20–24.ii.2010, B.L.Fisher et al. [ CASC] GoogleMaps

Worker and queen unknown.

Male. Description. Measurements: holotype. HL 0.74, HW 1.08, SL 0.3, EL 0.43, WL 2.22, MnW 1.33, CI 144.8, SI 27.9, EI 58.1, MnI 123.8.

Eye well-developed and prominent, posterior margin not exceeding posterior margin of mid ocellus in fullface view. Distance between lateral ocellus and eye long, about 3× longer than diameter of lateral ocellus. Palpal formula 3,2? (three maxillary and two? labial: observed without dissection). Notaulus absent on mesoscutum ( Fig 41 View FIGURES 38 – 46 ). Parapsidal line clearly impressed. Anterior margin of petiole as long as dorsal margin in lateral view. Subpetiolar process well-developed, with dense hairs ventrally.

Left and right parameres narrowly overlapping on dorsal small part of basimere ( Figs 14 View FIGURES 13 – 14 , 15 View FIGURES 15 – 16 ). Distinct, flattened projection present on each posterior portion of paramere with small denticles on distal and mesal portions of projection ( Figs 14 View FIGURES 13 – 14 , 15 View FIGURES 15 – 16 ).

Hair on compound eyes long, longer than diameter of mid ocellus ( Fig 50 View FIGURES 47 – 55 ). Mesofemur in dorsal view with anterior face covered in dense, subdecumbent hairs. Ventral margin of eye edged with darker pigment but without minute punctures on the area. Body color almost uniform dark brown but head darker ( Fig 32 View FIGURES 29 – 37 ).

Etymology. This species name is derived from the Latin word cassis (helm), and refers to the shape of its genital capsule, which looks like a Corinthian helm. The species epithet is treated as a noun in apposition, and thus invariant.

Distribution. MADAGASCAR: as in Figure 67 View FIGURES 64 – 72 .

Remarks. Adetomyrma cassis is only known from a single male collected in Réserve Spéciale Ambatovaky. The male of A. cassis is distinguished easily from other Adetomyrma males by a distinct and flatted projection on the posterior portion of the paramere ( Fig 15 View FIGURES 15 – 16 ). This projection is not separated from the paramere by a deep notch ( Fig 14 View FIGURES 13 – 14 ) as in A. bressleri ( Fig 13 View FIGURES 13 – 14 ).

This genital character observed in Adetomyrma cassis is completely unique and sufficient to regard this male as a distinct species, although we have found neither another specimen nor sympatric distribution with other Adetomyrma species.