The ant genus Crematogaster Lund, subgenus Physocrema Forel, in the Indochinese Peninsula (Hymenoptera: Formicidae)

Shingo Hosoishi & Kazuo Ogata
Indochinese species of the genus Crematogaster Lund, 1831 subgenus Physocrema Forel, 1912 are reviewed. Four species are recognised in the region. Two taxa formerly treated as subspecies of difformis, C. (P.) physothorax Emery, 1889 and C. (P.) sewardi Forel, 1901, are raised to species level. An identification key to species in the region is presented.
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