Leptogenys JEL-qua Lattke ms.

Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia


Colombia and Ecuador to Costa Rica. Costa Rica: Cordillera de Talamanca.


Head elongate, rectangular in frontal view; eye broadly convex in cephalic frontal view, length less than one fourth lateral cephalic margin; mandible elongate, external and internal margins parallel; internal mandibular margin weakly sinuate to mostly broadly convex, row of 2-3 setae present on basal mandibular convexity; petiole node subrectangular in lateral view; transverse section of node at mid-length V-shaped.

Worker metrics (n=5). HL (0,94-1,08); HW (0,58-0,68); ML (0,38-0,48); EL (0,12-0,18); SL (0,82-1,04); WL (1,34-1,60); mm. CI (0,60-0,63); MI (0,63-0,72); OI (0,20-0,26); SI (1,41-1,53).

Natural History

One colony was found under a stone.


The broad range of localities and altitudes where these ants have been found, spanning from Costa Rica into the Colombian Chocó and Ecuador, and ranging from 1700m to almost sea level, plus minor morphological differences suggest there could be more than one species under his name. Specimens from Magdalena, Colombia have more convex eyes, larger ommatidia, and most of the propodeum smooth and shining. The Costa Rican specimen is very black, with striae on the mandibular dorsum.

Page authors:
John E. Lattke piquihuye@gmail.com
John T. Longino longinoj@evergreen.edu

Date of this version: 3 March 2009.
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