Crematogaster Lund, 1831

Hosoishi, Shingo & Ogata, Kazuo, 2019, Fig. 7 in Effect of Kleptoparasitic Ants on the Foraging Behavior of a Social Spider (Karsch, 1891)., Zoological Studies 58 (11), pp. 1-15 : 6

Genus Crematogaster Lund, 1831

The Crematogaster rothneyi group

The Crematogaster rothneyi group can be distinguished from other Asian Crematogaster species by the following characters: (1) mandible with four teeth; (2) 3-segmented antennal club; (3) a deep metanotal groove; (4) developed propodeal spines; (5) petiole broader anteriorly; (6) bilobed postpetiole with distinct longitudinal median sulcus; (7) punctuated mesosoma; (8) stout body setae. This species group is similar to C. coriaria in having features (3), (4), (5) and (7), but can be distinguished from C. coriaria by having features (1), (2), (6) and (8) ( Hosoishi and Ogata 2015). Crematogaster coriaria is known from Peninsular Malaysia, Sumatra, Java and Borneo ( Hosoishi and Ogata 2015). These large-sized Crematogaster ants are easily found in the field. Despite having relatively few samples, the distribution range of the two species does not appear to overlap, and the two species C. coriaria and C. rothneyi are considered to have an allopatric distribution. While C. coriaria typically inhabits welldeveloped forests and nests in dead wood ( Hosoishi and Ogata 2015), the natural history of the C. rothneyi group is poorly known. Worker specimens of the herein described C. yaharai sp. nov. were collected from a disturbed community forest in Kampong Chhnang Province, Cambodia.