Strumigenys akalles group

Strumigenys akalles group Bolton (2000)

Worker Diagnosis
Apical fork of mandible with 3 teeth in a near-vertical series, the apicodorsal easily the longest and stoutest; without intercalary denticles or with a single denticle that arises from the dorsal surface of the apicoventral tooth. A single stout preapical tooth is present close to the apicodorsal tooth (see discussion below). Mandibles linear but short and stout, MI 18-28; in ventral view (and usually also in full-face view) the outer margin with a marked prebasal inflected angle.

Anterior clypeal margin broadly shallowly convex.

Scape stout, its leading edge with a series of crenellations or papillae from which long simple erect hairs arise; scape short, SI 59-67.

Apical antennomere not constricted basally.

Ventrolateral margin of head broadly concave in front of eye, the eye itself located on an acutely triangular projection of the margin that slopes outward and downward; apex of this projection extends beyond the eye and forms a sharp anteroventrally directed tooth or point below and beyond the midlength of the eye.

Propodeal teeth subtended by a narrow lamella.

Spongiform appendages of waist segments all present; lateral lobe of petiole small and posterior in profile.

Pilosity. Standing hairs everywhere simple, usually fine and soft, without bizarre pilosity. Pronotal humeral hair present, longer but not otherwise differentiated from the other main pilosity of the dorsal alitrunk. Dorsolateral margin of head with numerous freely laterally projecting hairs. First gastral tergite with filiform or flagellate hairs, such hairs also present on head and alitrunk. Hind tibia and basitarsus with long suberect to erect projecting hairs. Hairs on leading edge of scape long, suberect to almost erect.

Sculpture. Head reticulate-punctate; alitrunk variably sculptured. Disc of postpetiole mostly to entirely smooth. Gaster unsculptured except for basigastral costulae, the latter no longer than the maximum length of the postpetiole disc.