Adetomyrma

Yoshimura, Masashi & Fisher, Brian L., 2012, A revision of the Malagasy endemic genus Adetomyrma (Hymenoptera: Formicidae: Amblyoponinae), Zootaxa 3341, pp. 1-31 : 5-10

Key to species of Adetomyrma

Workers

Workers of aureocuprea , caudapinniger , cilium , and clarivida are unknown.

1. Only a single hair present lateral to (outside of) the longest hair on the anterior margin of the clypeus in full-face view ( Fig 7). Denticle present on base of subapical (second from apex) tooth ( Fig 7) with no gap present between basal dentition and apical teeth............................................................................................... 2

-. Two or more hairs present lateral to the longest hair on the anterior margin of the clypeus in full-face view ( Fig 8). Denticle absent on base of subapical (second form apex) tooth ( Fig 8) with a gap present between basal dentition and apical teeth... 3

2. Propodeal spiracle large, visible in dorsal view at posterior lateral corner of propodeum ( Fig 9). In lateral view, petiolar spiracle large, its horizontal diameter as long as the distance between the spiracle and anterior margin of petiolar node... bressleri

-. Propodeal spiracle small, not visible in dorsal view ( Fig 10), located on lateral propodeum ( Fig 77). In lateral view, petiolar spiracle small, its horizontal diameter distinctly shorter than the distance between the spiracle and anterior margin of petiolar node............................................................................................ goblin

3. Posterior margin of head flat. In posterior view, fifth (apical) tarsomere distinctly wider compared to fourth ( Fig 11). Ventral margin of head in lateral view distinctly convex...................................................... caputleae

-. Posterior margin of head concave. Fifth (apical) tarsomere in posterior view almost the same width as fourth ( Fig 12). Ventral margin of head in lateral view relatively flat.......................................................... venatrix Males

1. Parameres broadly overlapping dorsally, almost along the whole length of basimere ( Fig 13). Posterodorsal portion of paramere with a distinct, flattened, needle-like projection, and with a deep notch separating the projection and paramere ( Fig 13).......................................................................................... bressleri -. Parameres not or sometimes narrowly overlapping dorsally on small part of basimere ( Fig 14). Posterodorsal portion of paramere without needle-like projection, or without a deep notch separating the projection and paramere ( Fig 14)......... 2 2. Posterior portion of paramere narrow, forming a blunt, needle-like projection ( Fig 15). Large species (WL> 2.1mm).... cassis -. Posterior portion of paramere wide, not forming a needle-like projection ( Fig 16). Small to medium species (WL<2.1mm).. 3 3. Notaulus distinctly impressed on mesoscutum ( Fig 17). Body color usually black to blackish brown, rarely brighter. Small species (WL 0.79–1.28mm)........................................................................ goblin -. Notaulus not impressed on mesoscutum ( Fig 18). Body color usually brown to yellow, sometimes darker. Medium to small species (WL 1.03–2.03mm)............................................................................ 4

4. Paramere with a broad, distinct lobe posterodorsally ( Fig 19). Subpetiolar process small, but distinct. Palpal formula 2,2.............................................................................................. caudapinniger

-. Paramere without distinct lobe posterodorsally ( Fig 20). Subpetiolar process distinct or indistinct. Palpal formula usually 3,3 rarely 2,3............................................................................................ 5

5. Lateral ocellus relatively small and distant from eye; distance between them more than 1.5 × maximum diameter of lateral ocellus ( Fig 21). Subpetiolar process developed, with few hairs. Body color brown........................... caputleae

-. Lateral ocellus relatively large and close to eye; distance between them less than 1.5 × maximum diameter of lateral ocellus ( Fig 22). Subpetiolar process variable, but usually poorly developed and often without hairs. Body color brown to yellow.. 6

6. Distance between lateral ocelli about same length or less than maximum diameter of mid ocellus. Distance between lateral ocellus and eye 0.5 × or less than maximum diameter of lateral ocellus ( Fig 23). Hairs on compound eye more than 0.33 × of horizontal diameter of mid ocellus. Anterior face of mesofemur with only subdecumbent short hairs ( Fig 25)...... clarivida

-. Either distance between lateral ocellus distinctly longer than maximum diameter of mid ocellus, or distance between lateral ocellus and eye distinctly longer than 0.5 × length of maximum diameter of lateral ocellus ( Fig 24), or hairs on compound eye distinctly shorter than 0.33 × length of horizontal diameter of mid ocellus, or anterior face of mesofemur with short and dense long hairs ( Fig 26)..................................................................................... 7

7. Hairs on compound eye longer than 0.5 × length of horizontal diameter of mid ocellus ( Fig 27). Subpetiolar process developed............................................................................................... cilium

-. Hairs on compound eye shorter than 0.25 × length of horizontal diameter of mid ocellus ( Fig 28). Subpetiolar process not developed........................................................................................... 8

8. Body color uniform dark brown ( Fig 37). Parapsidal line clearly impressed, usually highlighted with darker pigment. venatrix

-. Body bicolored, head brown and the other body parts yellow ( Fig 29). Parapsidal line usually unclear, sometimes weakly impressed, without pigmentation............................................................... aureocuprea