Crematogaster Ʋacca-subgroup C. Ʋacca Forel, 1911 = C. stethogompha stethogompha W.M.Wheeler, 1919 = C. stethogompha detritinodis W.M.Wheeler, 1919 C. yamanei Hosoishi & Ogata, 2009 Head and mesosoma strongly reticulately sculptured (Fig. 7C). Propodeum strongly swollen, higher than promesonotum in profile view (Fig. 7C). Metapleural gland opening circular-shaped (Fig. 7C). Propodeal spines developed (Fig. 7C). Species unplaced to subgroup C. modiglianii Emery, 1900 = C. modiglianii clemensae Forel, 1910 = C. modiglianii saraaeakana Forel, 1911 = C. modiglianii anamita Santschi, 1925 = C. modiglianii anoemica Santschi, 1925 = C. modiglianii surbeki Santschi, 1925 C. subcircularis Mayr, 1879 Remarks: The two species C. modiglianii and C. subcircularis share the features of a four-segmented antennal club and an oval to elliptical petiole with other members of the C. inflata -group, but do not have a swollen propodeum and a circular-shaped metapleural gland opening. The metapleural gland opening is comma-shaped in C. subcircularis (Fig. 7D).

Published as part of Hosoishi, Shingo, Maruyama, Munetoshi, Yamane, Seiki, Jaitrong, Weeyawat, Hashim, Rosli, Syaukani, Syaukani, Sokh, Heng, Itioka, Takao, Meleng, Paulus & Pham, Thai Hong, 2023, Multilocus phylogeny and historical biogeography of the Crematogaster inflata-group (Hymenoptera: Formicidae) in South-East Asia, pp. 901-922 in Zoological Journal of the Linnean Society 198 (3) on pages 912-913, DOI: 10.1093/zoolinnean/zlad005, http://zenodo.org/record/8141964