Strumigenys emeryi group

Strumigenys emery group Bolton (2000)

Worker Diagnosis
Apical fork of mandible with one intercalary tooth or denticle. Mandible with preapical dentition variable: either without preapical teeth or denticles, or with one small acute preapical tooth or denticle near the apicodorsal tooth; a minute proximal denticle may also be present. MI 56-66.

Leading edge of scape with two or more hairs curved or directed toward the base of the scape. Scape slender, the subbasal curve shallow; moderate to very long, SI 79-105.

Preocular carina in profile straight, running above eye and extends back beyond level of anterior margin of eye; usually terminating at about level of midlength of eye but may be slightly longer or shorter.

Ventrolateral margin of head not indented nor deeply concave in front of eye, at most very shallowly concave. Postbuccal groove obtuse and shallow.

Propodeum with teeth or spines subtended by a carina or lamella on the declivity; some species with a propodeal lacuna (see below) but none with a sharp tooth or spine at base of declivity.

Ventral surface of petiole usually with spongiform tissue (absent in one species).

Pilosity. Pronotal humeral hair flagellate. Ground-pilosity of head and alitrunk of curved spatulate hairs. Apicoscrobal hair present. Cephalic dorsum with two pairs of standing hairs, one close to highest point of vertex, the other near occipital margin.

Mesonotum with a pair of standing hairs.

Sculpture. Head and alitrunk predominantly but rarely entirely reticulate-punctate; one or both often also with rugulose or costulate sculpture. Mesopleuron, metapleuron, or both usually with a smooth area (completely sculptured only in one species).