Eciton (Aenictus) fergusoni var. sundaica Karavaiev, 1927f: 7 (w.) INDONESIA (Java). Indomalaya.

Primary type information: Primary type material: syntype workers (number not stated, “several”). Primary type locality: Indonesia: Sunda Strait, Prinsen I. (= Panaitan I.), 5.i.1913, Nr. 2398 (W. Karawajew). Primary type depositories: SIZK, MZSP (1 W). Type notes: Radchenko et al., 2023: 17, cite 17 worker syntypes in SIZK.