Strumigenys assamensis De Andrade, 1994

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 : 20-21

Strumigenys assamensis De Andrade, 1994

Fig. 5A–C ; Table 2

Strumigenys assamensis De Andrade, 1994: 61 , figs 35–36 (w.) INDIA. Indomalaya.

Smithistruma assamensis – Bolton 1995: 384.

Pyramica assamensis – Bolton 1999: 1673.

Strumigenys assamensis – Baroni Urbani & De Andrade 2007: 115.

Material examined

VIETNAM – Hòa Bình Province • 12 workers; Pa Co Hang Kia Nature Reserve ; 900–1200 m a.s.l.; 9–12 Jun. 2013; L. Bartolozzi, S. Bambi, F. Cianferoni, G. Mazzaand and E. Orbach leg.; MSNF LSF1694 (“ La Specola ” Firenze Hymenoptera collection 1694) .

Geographic range

Mainland China (Yunnan), India (Arunachal Pradesh, Meghalaya), Vietnam (Hòa Bình).

New record for Vietnam.

Ecology

Collected at elevations from 900 to 1200 m.

Comments

The record of S. assamensis in northern Vietnam extends its native range south-eastward. Its presence in the states Assam and Nagaland in India and northern Myanmar is likely.

Following the revision of the Strumigenys leptothrix -group and the introduction of the species complexes within the group, S. assamensis likely belongs to the leptothrix -complex, but a formal assessment using specimens of opened mandibles is still recommended. All specimens in our hands have fully closed mandibles. Placing specimens against backlight suggests the observation of a principal dental row of around 7 teeth, followed by a series of small teeth and denticles, terminating in a small apical tooth.

Figures

Fig. 5. New species records of Strumigenys Smith, 1860 in full-face, profile and dorsal views. A–C. Worker of S. assamensis De Andrade, 1994 from Vietnam (LSF1694). D–F. Worker of S. canina (Brown & Boisvert, 1979) from Hainan, mainland China (HNA-00095). G–I. Worker of S. dohertyi Emery, 1897 from Hainan, mainland China (HNA-0067).