Key to Pachycondyla species
Key to Pachycondyla species based on workers, modified from Marcineiro & Lattke (2024).
1
- Pygidium with two tooth-like projections (Fig. 2A) => Pachycondyla crassinoda
- Pygidium without two tooth-like projections (Fig. 2B) => 2
2
return to couplet #1
- Clypeus with a central projection on anterior margin, in full-face view; color ferruginous (Fig. 3A) => Pachycondyla lenkoi
- Clypeus without a central projection on anterior margin, in full face view; dark brown color (Fig. 3B) => 3
3
return to couplet #2
- Humeral angle overhanging pronotal sides in dorsal view, in frontal view with a constriction followed by an expansion dorsally (Fig. 4A) => 4
- Humeral angle not overhanging pronotal sides in dorsal view, in frontal view without a constriction or expansion dorsally (Fig. 4B) => 6
4
return to couplet #3
- Petiole narrow and scale-like in lateral view, with dorsal face almost absent; first gastral tergite forming a conspicuous acute angle in lateral view, where the anterior and dorsal faces meet; humeral angle anteriorly projected in dorsal view (Fig. 5A) => Pachycondyla procidua
- Petiole block-like in lateral view, with developed dorsal face; first gastral tergite forming a right angle in lateral view, where the anterior and dorsal faces meet; humeral angle swollen or with a visible shining carina, but never conspicuously anteriorly projected in dorsal view (Fig. 5B) => 5
5
return to couplet #4
- Without sharp and shining carina on humeral angles, in lateral view (Fig. 6A); ventral surface of head completely striate => Pachycondyla fuscoatra
- With sharp and shining carina on humeral angles, in lateral view (Fig. 6B); ventral surface of head with sculpturing medially effaced => Pachycondyla striata
6
return to couplet #3
- Small species (WL ≤ 3.5mm); ventral surface of head with sculpturing medially effaced (Fig. 7A); with or without sharp and shining humeral carina => 7
- Large species (WL ≥ 3.5mm); ventral surface of head completely striate (Fig. 7B); humeral angle never with sharp and shining carina => 8
7
return to couplet #6
- Pronotum, in dorsal view, punctate and shining; clypeus with a central longitudinal carina (Fig. 8A) => Pachycondyla lenis
- Pronotum, in dorsal view, striate and matte; clypeus without central longitudinal carina (Fig. 8B) => Pachycondyla harpax
8
return to couplet #6
- Short clypeus (CD ≤ 0.12mm), clypeal distance, in full-face view shorter than antennal scape basal width, with a strong central concavity (Fig. 9A) => 9
- Long clypeus (CD > 0.12mm), clypeal distance, in full-face view, longer than antennal scape basal width, without strong central concavity in full-face view. Clypeus centrally straight, slightly convex or slightly concave (Fig. 9B) => 10
9
return to couplet #8
- Dorsum of first gastral tergite usually sculptured to some extent, not highly smooth and shining (Fig. 10A); clypeus without a central carina on central concavity, in frontal view => Pachycondyla impressa
- Dorsum of first gastral tergite highly smooth and shining, polished (Fig. 10B); clypeus with a central carina on central concavity, in frontal view => Pachycondyla lattkei
10
return to couplet #9
- Dorsum of mandible striate (Fig. 11A) => Pachycondyla inca
- Dorsum of mandible not striate (Fig. 11B) => 11
11
return to couplet #10
- Frons longitudinally striate, in full-face view; petiolar node transversely striate on dorsum and transversely strigulate on posterior face (Fig. 12A,B); petiole with parallel lateral sides in posterior view (Fig. 12B) => Pachycondyla purpurascens
- Frons finely striate-reticulate, becoming rows of punctures closer to vertexal margin, in full-face view; node smooth and shining, without transversal striae or strigulae on dorsal and posterior faces (Fig. 13A,B); node wider dorsally than ventrally in posterior view (Fig. 13B) => Pachycondyla beneditoi