Strumigenys natynion Bolton 2000
Creators: name: Tang, Kit Lam
name: Guénard, Benoit
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Strumigenys
Strumigenys natynion

description: Strumigenys natynion Bolton, 2000
Fig. 34A–C; Table 2
Strumigenys natynion Bolton, 2000: 762 (w.) BORNEO. Indomalaya.
Material examined
THAILAND – Sakon Nakhon Province • 2 workers; Site 104; 17.1326° N, 103.99685° E; 501 m a.s.l.; 21 Jun. 2018; IBBL members leg.; Winkler, 4 corners; IBBL ANTWEB1011940 to ANTWEB1011941 • 1 queen; Site 107; 17.12902° N, 104.00193° E; 484 m a.s.l.; 21 Jun. 2018; IBBL members leg.; Winkler, 4 corners; IBBL ANTWEB1011942. • 1 worker; 17.1326° N, 103.99685° E; 501 m a.s.l.; 21 Jun. 2018; IBBL members legs. ANTWEB1011941; Winkler, 4 corners; IBBL.
VIETNAM – Đỗng Nai Province • 1 worker; Cat Tien National Park; 11.44912° N, 107.35963° E; 140 m a.s.l.; 4 Jun. 2018; IBBL members leg.; Winkler, 4 corners; IBBL • 2 workers; Cat Tien National Park; 11.48512° N, 107.38658° E; 168 m a.s.l.; 5 Jun. 2018; IBBL members leg.; Winkler, 4 corners; IBBL ANTWEB1011952.
Measurements
Workers
TL 2.5–2.7, HL 0.62–0.71, HW 0.45–0.52, MandL 0.22–0.27, SL 0.31–0.36, EL 0.056 –0.060, PW 0.28– 0.30, ML 0.63–0.66, PL 0.28–0.30, PH 0.13–0.15, DPW 0.13–0.15, PPL 0.17, GL 0.57–0.61, CI 72–74, MI 35–38, SI 67–74, OI 12–13, LPI 45–51, DPI 46–52 (n =3).
Queen
TL 2.7, HL 0.63, HW 0.48, MandL 0.25, SL 0.34, EL 0.104, PW 0.31, ML 0.73, PL 0.27, PH 0.15, DPW 0.13, PPL 0.16, GL 0.65, CI 75, MI 40, SI 71, OI 22, LPI 54, DPI 48 (n= 1).
Geographic range
Malaysia (East Malaysia), Thailand (Sakon Nakhon), Vietnam (Đồng Nai).
New record for Thailand and Vietnam.
Ecology
Collected in secondary forest, with elevation from 140 to 501 m.
Comments
Specimens from Thailand and Vietnam all show a smaller preapical tooth, a slightly broader propodeal spine, a larger lateral lobe of the petiole (in both profile and dorsal views), relatively denser erect filiform to flagellate setae on the gaster than specimens from Borneo. They are also smaller (TL 2.5–2.7, HL 0.62–0.71, ML 0.63–0.66) than specimens from Borneo (TL 3.2–3.5, 0.88–0.94, ML 0.98) but retain similar body ratios (CI 72–74, Si 67–74 vs CI 68–74, SI 71–77). Bolton (2000) mentioned that the species appears plastic, with variations in pilosity and propodeal teeth. Hence, it is uncertain if the aforementioned morphological differences between specimens from Thailand and Vietnam on the one hand and those from Borneo on the other hand are geographical differences or an indication of a separate species. Based on the current species diagnosis, we consider material from Thailand and Vietnam as S. natynion.
The records in northern Thailand and southern Vietnam imply that the species is not endemic to Borneo, but instead may be more widespread in the Indochinese Peninsula. Its presence is likely in the other parts of the region, e.g., Peninsular Malaysia, Cambodia, Laos and Myanmar.
description: Published as part of 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, pp. 1-144 in European Journal of Taxonomy 907 on pages 99-101, DOI: 10.5852/ejt.2023.907.2327, http://zenodo.org/record/10148811