Key to Neoponera foetida species complex: Workers

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This worker key is based on: Fernandes, I.O., De Oliveira, M.L. & Delabie, J.H.C. 2014. Description of two new species in the Neotropical Pachycondyla foetida complex (Hymenoptera: Formicidae: Ponerinae) and taxonomic notes on the genus. Myrmecological News 19, 133-163.

This key was published before Neoponera was revived as a genus. All of the species are in the genus Neoponera not Pachycondyla.

The workers and queens can be easily differentiated from those of the other species complexes by the combination of the following features: notopropodeal groove deep and well-marked on the mesosomal dorsum; pronotal carina well-developed; petiole subquadrate, with well-developed lateral carina; body surface entirely covered with dense pubescence and golden erect hairs. The males can be differentiated by the combination of the following features: carina present between the antennal insertions; pronotal carina absent; body surface entirely covered with dense pubescence and golden erect hairs. No significant differences in the morphology of male genitalia were observed among the species of the Pachycondyla foetida species complex.

Diagnosis of Pachycondyla (=Neoponera) foetida species complex

Worker: Body surface entirely covered with dense pubescence and golden hairs; palps covered by sparse pubescence, with palpal formula 4:4; malar carina well-developed; eyes large and oval (0.77 - 0.82 mm) located on anterior half of head; lateral pronotal carina well developed with exception of Pachycondyla zuparkoi (lacking carina) and P. billemma (not reaching the mesonotum); notopropodeal groove deep, well-marked on mesosomal dorsum; petiole subquadrate in lateral view, with anterior face vertical or concave, and posterior face broadly rounded; stri-dulatory file on abdominal pretergite IV well developed.

Queen: Very similar to worker, except for malar carina sharper than in worker; mandibles slightly opaque; sharp pronotal carina; well developed scutum and scutellum reduced; well marked mesometanotal and metanotal-propodeal grooves; gaster larger than in the worker.

Male: Body surface covered entirely with golden-silver pubescence and erect golden hairs; body black or brown; yellowish, brown or black legs; palps covered by sparse pubescence, with palpal formula 6:4; eye well developed and expanded dorsolaterally; fine carina present between insertion of antennae; malar carina absent; clypeus convex medially; lateral pronotal carina absent; parapsidal sutures and mayrian sutures present on the scutum; well-marked mesometanotal and metanotal-propodeal grooves; petiole rounded dorsally in lateral view, more smaller and slender than in workers; gaster black or yellowish; stridulatory file of abdominal pretergite IV well-developed; parameres well-developed with apex round and sparse hairs on surface; ventral margin of parameres concave; aedeagus with tiny teeth on ventral margin, and with hairs on dorsal margin; cuspis of volsella elongated and curving ventrally, with round apex and numerous hairs in ventral view; digitus meeting the teeth on ventral surface.

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