Key to Strumigenys of East Asia

This worker key is based on: Bolton, B. 2000. The ant tribe Dacetini. Memoirs of the American Entomological Institute. 65:1-1028.

Malasian-Oriental-East Palaearctic Strumigenys

Bolton noted: Note. The Tongan Strumigenys zakharovi (species inquirenda) is not included in the key.

This key is from a study that included the now synonymized genus Pyramica. Therefore there are two sets of keys for the Strumigenys species from this region: the key found below and this second key for the species once classified as Pyramica: and a key Key to Strumigenys of East Asia (as Pyramica).

You may also be interested in
 * Strumigenys

1

 * Antenna with 4 segments; first funicular segment not separated from the 2-segmented apical club . . . . . 2


 * Antenna with 6 segments; first funicular segment separated from the 2-segmented apical club by two small segments . . . . . 6

2
return to couplet #1
 * Pronotal humeral hair absent . . . . . 3


 * Pronotal humeral hair present, stiff and simple . . . . . 4

3
return to couplet #2
 * Leading edge of scape expanded into a massive projecting lobe, the area of which is much greater than the area of the median portion of the clypeus; SL at most 1.60 times the maximum scape width. Apical segment of antenna not spindle-shaped, broad basally where it articulates with preapical segment. (Indonesia (Sulawesi, Kai Besar), Papua New Guinea, Solomon Is) . . . . . Strumigenys eurycera


 * Leading edge of scape shallowly convex, not expanded into a massive projecting lobe that is greater in area than median portion of clypeus; SL 5.00 times the maximum scape width. Apical segment of antenna spindle-shaped, very constricted and narrow basally where it articulates with preapical segment. (Papua New Guinea) . . . . . Strumigenys pharosa

4
return to couplet #2
 * Basal half of first gastral sternite unsculptured. Cephalic dorsum with numerous orbicular hairs, without erect simple hairs. Leading edge of scape with short spatulate or spoon-shaped hairs that are shorter than maximum width of scape. (Pantropical tramp species) . . . . . Strumigenys emmae


 * Basal half of first gastral sternite longitudinally costulate. Cephalic dorsum with numerous short erect simple hairs, without orbicular hairs. Leading edge of scape with simple curved hairs that are longer than maximum width of scape . . . . . 5