Lachnomyrmex regularis Feitosa and Brandčo 2008

Myrmicinae, Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia


Costa Rica: Estación Pitilla, Guanacaste Conservation Area.


Worker: first gastral tergum devoid of erect setae; dorsum of postpetiole with a raised, subtriangular boss medially, and with a single row of about 6 long flexuous setae along anterior margin; dorsum of mesosoma with rugae organized into somewhat continuous wavy rugae, transverse on anterior pronotum, grading to longitudinal on rest of promesonotum; cephalic dorsum with dense, subparallel rugae; compound eyes relatively large (eye length greater than 0.15mm), with about 10 facets at maximum diameter; mesosoma length (WL) greater than or equal to 0.85mm; dorsum of postpetiole entirely smooth and shining; gaster much darker than the rest of body.

Similar species: haskinsi, longinoi.

Natural History



This species is like a large version of L. haskinsi, known from one collection from the northernmost slope of the Cordillera de Guanacaste in Costa Rica. Lachnomyrmex haskinsi has not been collected north of the Cordillera de Tilarán, so there is no evidence of sympatry of the two species yet.

Literature Cited

Feitosa, R. M., and C. R. F. Brandčo. 2008. A taxonomic revision of the Neotropical myrmicine ant genus Lachnomyrmex Wheeler (Hymenoptera: Formicidae). Zootaxa 1890:1-49.

Page author:

John T. Longino, The Evergreen State College, Olympia WA 98505 USA.

Date of this version: 1 April 2009.
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