Further additions to the knowledge of Strumigenys (Formicidae: Myrmicinae) within South East Asia, with the descriptions of 20 new species Author Tang, Kit Lam 89B25F7E-C455-49BE-A9E5-669E96001A3B School of Biological Sciences, The University of Hong Kong, Kadoorie Biological Sciences Building, Pok Fu Lam Road, Hong Kong SAR, China. u3508935@connect.hku.hk Author Guénard, Benoit 3885FFD6-3FE4-428A-88BD-C5E88F2BC315 School of Biological Sciences, The University of Hong Kong, Kadoorie Biological Sciences Building, Pok Fu Lam Road, Hong Kong SAR, China. zeroben@gmail.com text European Journal of Taxonomy 2023 2023-11-14 907 1 144 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2327/10121 journal article 10.5852/ejt.2023.907.2327 2118-9773 10148811 EBE82908-1221-4774-A934-6219D19AA545 Strumigenys inhonesta Bolton, 2000 Fig. 23A–C ; Table 2 Strumigenys inhonesta Bolton, 2000: 749 (w.) INDONESIA ( Sulawesi ). Indomalaya. Material examined THAILAND – Trang Province • 4 workers ; Khao Chong , Site 34 (KCW34); 7.55521° N , 99.79266° E ; 1 Jan. 2019 ; Winkler, 4 corners; IBBL ANTWEB1011944 to ANTWEB1011947 . Measurements Workers TL 2.2–2.3, HL 0.57–0.59, HW 0.45–0.48, MandL 0.14–0.16, SL 0.28–0.29, EL 0.040 –0.048 , PW 0.24– 0.25, ML 0.59–0.61, PL 0.26–0.28, PH 0.12–0.13, DPW 0.11–0.13, PPL 0.16–0.19, GL 0.49–0.56, CI 79–81, MI 25–27, SI 61–63, OI 9–11, LPI 42–48, DPI 41–47 (n=4). Geographic range Indonesia (Borneo, Sulawesi ), Malaysia (East Malaysia ), Philippines , Thailand ( Trang ). New record for Thailand . Ecology Collected in old secondary forest. Comments The record of S. inhonesta in Thailand extends its native range 1500 km eastward and represents the first record of this species within continental Asia. Its presence in other parts of the Indochinese Peninsula, such as Peninsular Malaysia is likely.