Strumigenys rogeri Emery, 1890

Tang, Kit Lam, Pierce, Mac P. & Guenard, Benoit, 2019, Review of the genus Strumigenys (Hymenoptera, Formicidae, Myrmicinae) in Hong Kong with the description of three new species and the addition of five native and four introduced species records, ZooKeys 831, pp. 1-48 : 36

Strumigenys rogeri Emery, 1890 - new record Fig. 5 J–L

Strumigenys rogeri Emery 1890: 68, pl. 7, fig. 6. SAINT THOMAS, U.S. VIRGIN ISLANDS. Neotropical.

Material examined.

HONG KONG: Tai Po District, Sai Keng, 22.41998N 114.26824E, 1 m, 26.VI.2018-10.VII.2018, R. Cheung / C. Taylor, Malaise trap, IBBL. VIETNAM: Cat Tien National Park, 11.26.237N, 107.25.431E, 145 m, 3.VI.2018, B. Guénard, IBBL, hand collection.

Measurements.

Alate (n = 1) TL 2.5, HL 0.58, HW 0.46., MandL 0.32, SL 0.35, EL 0.10, PW 0.32, ML 0.60, PL 0.28, PH 0.15, DPW 0.13, PPL 0.10, GL 0.62, CI 78, MI 54, SI 77, OI 21, LPI 54, DPI 48.

Geographic range.

Native: Afrotropical region, known from Ivory Coast to Zanzibar Archipelago (Tanzania) and south to Angola.

Introduced: A widespread species in multiple biogeographic realms. For a full global account, see antmaps.org ( Janicki et al. 2016; Guénard et al. 2017). Here, the Asian distribution is presented for the Oriental realm (Hong Kong; Kerala [India]; Java and Sumatra [Indonesia], Peninsular and East Malaysia [Malaysia], Philippines, and Taiwan). We can also confirm the presence of this species from Vietnam, which was previously reported by Zryanin (2011).

Comments.

The record of this tramp species in Hong Kong is not surprising considering its widespread range in nearby countries (Philippines, Taiwan, and Vietnam), which have relatively similar climatic conditions. However, a single alate has been collected from a mangrove habitat, an unlikely habitat for this species, and no workers have been collected in Hong Kong. Nonetheless, the record from Hong Kong is the first observation of this species for mainland China.