Strumigenys takasago ( Terayama et al., 1995 )

Tang, Kit Lam & Guénard, Benoit, 2023, Further additions to the knowledge of Strumigenys (Formicidae: Myrmicinae) within South East Asia, with the descriptions of 20 new species, European Journal of Taxonomy 907, pp. 1-144 : 120

Strumigenys takasago ( Terayama et al., 1995)

Fig. 39D–I ; Table 2

Kyidris takasago Terayama et al., 1995: 87 , figs 7–9 (w.q.) TAIWAN. Indomalaya.

Pyramica takasago – Bolton 1999: 1672.

Strumigenys takasago – Baroni Urbani & De Andrade 2007: 128.

Material examined

MAINLAND CHINA – Guangxi Province • 2 workers; Maoershan, Bajiaotian; 22 Aug. 1998; J. Fellowes leg.; HKBM ANTWEB1011895 to ANTWEB1011896 .

TAIWAN • 2 workers; Nantou, Sun Moon Lake ; 9 Feb. 2017; P.C. Hsu leg.; reared colony, specimens collected on 6 Jul. 2017; KUM ANTWEB1010910 • 1 worker; same collection data as for preceding; KUM ANTWEB1010911 .

Measurements

Workers

TL 2.0, HL 0.46–0.47, HW 0.39, MandL 0.13, SL 0.28, EL 0.036, PW 0.29, ML 0.49–0.50, PL 0.25– 0.26, PH 0.13–0.16, DPW 0.13, PPL 0.10–0.12, GL 0.54–0.55, CI 83–85, MI 28, SI 71–72, OI 9, LPI 52–60, DPI 49–53 (n= 2).

Geographic range

Mainland China (Guangxi), Taiwan.

New record for Guangxi.

Comments

Specimens from Guangxi Province of mainland China ( Fig. 39D–F ) have propodeal spines that are slightly broader and less developed than those of the specimens from Taiwan ( Fig. 39G–I ), and not armed at a distinct upward angle; the specimens from Guangxi (TL 2.0, ML 0.49–0.50) are also slightly smaller than those from Taiwan (TL 2.2–2.3, ML 0.55–0.60). No other major morphological difference is observed; hence, we consider specimens from Guangxi as S. takasago . This is the first record of the species within continental Asia, indicating it is not endemic to Taiwan.

Figures

Fig. 39. New species records of Strumigenys Smith, 1860 in full-face, profile and dorsal views. A–C. Worker of S. sydorata Bolton, 2000 from Hainan, mainland China (HNA-00781). D–F. Worker of S. takasago (Terayama et al., 1995) from Guangxi, mainland China (ANTWEB1011895). G–I. Worker of S. takasago from Taiwan (ANTWEB1010910(1)).