Diacamma rugosum subsp. ceylonense Emery, 1897h: 159 (w.) SRI LANKA. Indomalaya.

Primary type information: Primary type material: syntype workers (number not stated). Primary type locality: Sri Lanka (“Ceilan”): (no further data) (J. Nietner). Primary type depositories: MNHU, MSNG.

Infrasubspecies

• D. r. c. moicum Forel, 1911