Xiphomyrmex costatus flavescens Emery, 1897 an obsolete combination of Tetramorium costatus flavescens (Emery, 1897)
Xiphomyrmex costatus subsp. flavescens Emery, 1897c: 588 (w.) NEW GUINEA (Papua New Guinea). Australasia.
Primary type information: Primary type material: holotype worker. Primary type locality: Papua New Guinea: nr Berlinhafen (= Aitepe) (L. Biró). Primary type depository: MSNG.
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