Strumigenys sydorata Bolton, 2000

(Fig. 6A–D)

Strumigenys sydorata Bolton, 2000: 876 (worker, queen; type locality: Java, Bogor, Kebun Raya).

Material examined. Indonesia, West Sumatra Prov., Padang, Bungus Teluk Kabung, Teluk Kabung Utara, Cindakir, Lubuk Hitam, Tiga Tingkat waterfall, 1°03′09.1″S 100°25′29.4″E, ca. 130 m, disturbed forest, 12. VI .2021, 1 queen, 23 workers (colony code RS12 vi21-04), R. Satria leg.

Distribution. Widespread in the Indo-Chinese and Indo-Malayan subregions: Hong Kong (Tang et al., 2019), Vietnam, Thailand (Khachonpisitsak et al., 2020), Sumatra (present study), Java (Bolton, 2000).

Remarks. New record for Sumatra. In the present study, we found that this species has a small colony (24 individuals) nested in dead twig. A single small colony consisting of one dealate queen and 23 workers was collected from the leaf litter layer of disturbed forest (touristic area visited by local people), at an altitude of ca. 130 m.