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Key to Leptogenys chalybaea species group workers
This worker key is based on: Arimoto, K. and S. Yamane. 2018. Taxonomy of the Leptogenys chalybaea species group (Hymenoptera, Formicidae, Ponerinae) from Southeast Asia. Asian Myrmecology 10, e010008 (DOI 10.20362/am.010008).
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1
- Gastral segments I–II longitudinally striate on worker or finely alveolate on queen (Laos, Thailand, Cambodia, Myanmar) . . . . . Leptogenys cyanicatena
- Gastral segments I–II smooth on worker and queen . . . . . 2
2
- Eye length in full-face view more than one-fourth of head lateral margin length. Outer margin of eye just breaking lateral outline of head. Head and petiolar node smooth except for anterior part of frons and gena weakly longitudinally striate (Malaysia: Borneo) . . . . . Leptogenys chalybaea
- Eye length in full-face view less than one-fourth of head lateral margin length. Eyes distinctly interrupts lateral outline of head. Head and petiolar node striate (Vietnam) . . . . . Leptogenys atra