Eciton (Aenictus) fergusoni subsp. elongatus Karavaiev, 1926d: 424, fig. 3 (w.) SRI LANKA. Indomalaya.

Primary type information: Primary type material: syntype workers (number not stated, “several”). Primary type locality: Sri Lanka (“Ceylon”): Ramboda, 3500 ft, 8.xii.1912 (O. John). Primary type depository: SIZK. Type notes: 1) Kostyuk, 1976: 93, cites 6 worker syntypes in SIZK. 2) Radchenko et al., 2023: 17, cite 4 worker syntypes in SIZK.