Strumigenys exilirhina 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 exilirhina

description: Strumigenys exilirhina Bolton, 2000
Fig. 17D–F; Table 2
Strumigenys exilirhina Bolton 2000: 881 (w.q.) NEPAL. Indomalaya.
Material examined
MAINLAND CHINA – Guangxi Province • 1 worker; Dapingshan; 25 Sep. 1998; J. Fellowes leg.; IBBL ANTWEB1011908. – Hainan Province • 2 workers; Diaoluoshan; 24 May 1999; J. Fellowes leg.; IBBL ANTWEB1011909 • 39 workers; BM6; 19.925° N, 110.261° E; 12 Aug. 2015; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; BM6; same collection data as for preceding; IBBL • 6 workers; BM6; same collection data as for preceding; Winkler, 12 random; IBBL • 2 workers; BM7; 19.194° N, 109.739° E; 23 Aug. 2015; L. Wang leg.; Winkler, 12 random; IBBL • 1 worker; BM7; same collection data as for preceding; Winkler, 4 corners; IBBL • 10 workers; Bawangling, BWLR2; 19.162828° N, 109.034511° E; 12 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 3 workers; Bawangling, BWLR3; 19.17547° N, 109.02785° E; 12 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 5 workers; Bawangling, BWLR4; 19.13014° N, 109.06585° E; 13 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 4 workers; Bawangling, BWLR6; 19.12737° N, 109.07055° E; 13 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 1 worker; Bawangling, BWLR7; 19.19498° N, 109.02010° E; 15 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 2 workers; Bawangling, BWLS1; 19.11877° N, 109.16342° E; 22 Jun. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 19 workers; same collection data as for preceding; Winkler, 4 corners; IBBL • 1 worker; Bawangling, BWLS10; 19.11878° N, 109.15562° E; 9 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 10 workers; Bawangling, BWLS11; 19.11678° N, 109.14003° E; 10 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 20 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 1 worker; Huoshankou, HSK2; 5 Jul. 2015; L. Wang leg.; Winkler, 4 corners; IBBL • 8 workers; Jianfengling, JFLFW1; 19.117° N, 109.152° E; 24 Dec. 2015; L. Wang leg.; Winkler, 4 corners; IBBL • 2 workers; Jianfengling, JFLFW2; 19.115° N, 109.159° E; 26 Dec. 2015; L. Wang leg.; Winkler, 12 random; IBBL • 5 workers; Jianfengling, JFLFW3; 19.121° N, 109.118° E; 26 Dec. 2015; L. Wang leg.; Winkler, 4 corners; IBBL • 14 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 33 workers; Jianfengling, JFLFW5; 18.697° N, 108.849° E; 4 Jan. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 2 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 8 workers; Yinggeling, YGLK1; 19.03775° N, 109.39278° E; 30 Jul. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 33 workers; Yinggeling, YGLK10; 19.07874° N, 109.50318° E; 2 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 12 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 5 workers; Yinggeling, YGLK11; 19.07802° N, 109.50424° E; 2 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 3 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 3 workers; Yinggeling, YGLK12; 19.08446° N, 109.50425° E; 2 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 20 workers; Yinggeling, YGLK13; 19.08432° N, 109.26697° E; 3 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 22 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 3 workers; Yinggeling, YGLK14; 19.10743° N, 109.25845° E; 3 Aug. 2016; L. Wang leg.; Winkler, 12 random; IBBL • 11 workers; Yinggeling, YGLK15; 19.11494° N, 109.26105° E; 3 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; same collection data as for preceding; Winkler, 12 random; IBBL • 1 worker; Yinggeling, YGLK2; 19.03875° N, 109.39525° E; 30 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 3 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 16 workers; Yinggeling, YGLK3; 19.04399° N, 109.39297° E; 30 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; same collection data as for preceding; Winkler, 12 random; IBBL • 12 workers; Yinggeling, YGLK4; 19.07700° N, 109.52288° E; 31 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 5 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 2 workers; Yinggeling, YGLK5; 19.07558° N, 109.52462° E; 31 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 3 workers; Yinggeling, YGLK5; same collection data as for preceding; Winkler, 12 random; IBBL • 14 workers; Yinggeling, YGLK6; 19.07632° N, 109.52365° E; 31 Jul. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 1 worker; same collection data as for preceding; Winkler, 12 random; IBBL • 3 workers; Yinggeling, YGLK7; 19.09177° N, 109.53691° E; 1 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 2 workers; same collection data as for preceding; Winkler, 12 random; IBBL • 5 workers; Yinggeling, YGLK9; 19.09269° N, 109.53455° E; 1 Aug. 2016; L. Wang leg.; Winkler, 4 corners; IBBL • 2 workers; same collection data as for preceding; Winkler, 12 random; IBBL.
HONG KONG • 1 worker, 1 queen; Sai Kung District, Tit Kim Hang East; 22.40541° N, 114.30226° E; 90 m a.s.l.; 1 Aug. 1996; J. Fellowes leg.; HKBM • 4 workers; Sai Kung District, Tit Kim Hang West; 22.40446° N, 114.30130° E; 60 m a.s.l.; 14 Nov. 1996; J. Fellowes leg.; HKBM.
Geographic range
Bhutan, mainland China (Guangdong, Guangxi, Hainan, Hong Kong, Jiangxi, Macau, Tibet, Yunnan), India (Meghalaya, Uttar Pradesh), Japan (Okinawa Prefecture), Nepal, Thailand.
New record for Guangxi and Hainan.
Ecology
Another frequently collected species in Hainan, which has been collected in primary and secondary forest, urban park, plantations and agro-rubber plantations. Indochinese specimens have also been collected in similar range of habitats, with known elevation from 174 to 911 m.
Comments
Species with widespread distribution across continental China and east to India. Its presence in Guangxi and Hainan provinces completes the known distribution range of this species within Southeast China.
Most specimens collected from southern Thailand and Vietnam, after a careful examination of the morphology of their mandibles, in particular the preapical tooth, were identified as closer to S. feae Emery, 1895 than S. exilirhina (Fig. 18F). Together with the remarks made by Bolton (2000) on the preapical tooth morphology of specimens from Thailand, it is possible that at least some of the S. exilirhina previously recorded in Thailand should be reconsidered, thus a re-examination of specimens is recommended. It is also possible that these Indochinese specimens constitute a separate species, though at the moment they cannot be delimited as a new species without ambiguity. Refer to S. feae for a detailed discussion.
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 50-53, DOI: 10.5852/ejt.2023.907.2327, http://zenodo.org/record/10148811