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Pseudomyrmex nigrocinctus (Emery, 1890)

Worker diagnosis. Relatively small, HW 0.74-0.85, with elongate head (CI 0.75-0.84) and short eyes (REL 0.40-0.45, EL/LHT 0.56-0.61); median clypeal lobe laterally rounded; petiole narrow (PWI 0.49-0.61); head densely punctulate and subopaque, becoming sublucid posteriorly; body orange-brown, often with distinct anterolateral fuscous patches on abdominal tergite IV.

Similar species. P. particeps, P. peperi.

Distribution. Guatemala to Costa Rica.

Biology. P. nigrocinctus is a monogynous acacia-ant which has been recorded from Acacia collinsii, A. cornigera and A. hindsii.

References.  Ward (1993).

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