A NEW SPECIES OF THE SUBGENUS POLYRHACHIS (CYRTOMYRMA) FOREL (HYMENOPTERA: FORMICIDAE: FORMICINAE) FROM BORNEO

摘要

Polyrhachis acuminata, a new species of the subgenus Cyrtomyrma Forel, is described and illustrated from Sabah, Malaysia. During a recent, one day visit to Poring Hot Springs in Kinabalu Park, Sabah, Malaysia, I collected a few Polyrhachis Fr. Smith specimens, including two that I regarded at the time to belong to a species recently described as Polyrhachis (Cyrtomyrma) danum Kohout (Kohout 2006). These specimens featured several characteristics of that species, including distinctly reddish-brown appendages and a similar mesosomal outline. However, following my return to Brisbane, closer examination of the specimens revealed them to be an undescribed species. This discovery was made too late for the species to be included in my recent revision of the Bornean fauna of subgenus Cyrtomyrma Forel (Kohout 2006) and consequently it is described below.