Crematogaster, Vacca Forel, 1911

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, Zoological Journal of the Linnean Society 198 (3), pp. 901-922 : 912-913

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 ).

Figures

Figure 7. Characters of the Crematogaster inflata-group. A, mesosoma in profile view (C. difformis). B, mesosoma in profile view (C. mucronata). C, mesosoma in profile view (C. Ʋacca). D, arrow indicates comma-shaped metapleural gland opening in dorsolateral view (C. subcircularis).