Strumigenys scotti group

Strumigenys scotti group Bolton (2000)

Worker Diagnosis
Apical fork of mandible without intercalary teeth or denticles. Mandibles each with two preapical teeth, the proximal longer than the distal. MI 42-54.

Scape slender and subcylindrical to slightly dorsoventrally flattened; short to long, SI 59-95.

Ventrolateral margin of head with preocular notch absent to feebly developed; when present it is merely a weak indentation in the ventrolateral margin immediately in front of the eye; anterior portion of eye not detached from side of head. Ventral surface of head without an impression or trench that extends transversely from the preocular notch toward the midline. Postbuccal impression distinct in profile.

Eye with maximum diameter at least equal to, and usually exceeding, the maximum width of the scape.

Ventral surface of petiole usually with a conspicuous spongiform strip or curtain, only rarely otherwise; spongiform lobes of postpetiole present but first gastral sternite without a basal spongiform pad.

Pilosity. Pronotal humeral hair usually present, rarely absent. Apicoscrobal hair absent; upper scrobe margin fringed by a continuous row of small hairs. Cephalic ground pilosity not scale-like on anterior half. Cephalic dorsum usually with 6 standing hairs, arranged as a transverse row of 4 near occipital margin and a pair close to highest point of vertex (only rarely reduced from this). Mesonotum with a single pair of standing hairs. First gastral tergite with simple to remiform hairs; flagellate hairs always absent.

Sculpture. Head and alitrunk dorsally reticulate-punctate but pleurae and side of propodeum smooth (except in Strumigenys cenagra); pronotal dorsum frequently with longitudinal or oblique rugulae or costulae. Gaster unsculptured except for basigastral costulae.