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 Author Tang, Kit Lam Author Pierce, Mac P. Author Guenard, Benoit text ZooKeys 2019 831 1 48 http://dx.doi.org/10.3897/zookeys.831.31515 journal article http://dx.doi.org/10.3897/zookeys.831.31515 1313-2970-831-1 96EE78BA18724F4A8787B362A55E8989 96EE78BA18724F4A8787B362A55E8989 Strumigenys mazu (Terayama, Lin & Wu, 1996) - First recorded in Hong Kong in 2000 (Bolton 2000). Smithistruma mazu Terayama Lin and Wu 1996: 337, figs 26, 27, 30, 31 (w.) TAIWAN. Indomalaya. Pyramica mazu ( Terayama, Lin & Wu, 1996). Combination in Pyramica : Bolton 1999: 1673. Strumigenys mazu (Terayama, Lin & Wu, 1996). Combination in Strumigenys : Baroni Urbani and De Andrade 2007: 123. Material examined. HONG KONG: Sha Tin District, Tai Po Kau, 22.42007N , 114.1829E , 02.07.2015, 291 m, T. Tsang, Winkler, IBBL; Tsuen Wan District, Tai Lam Country Park, 22.38109N , 114.05511E , 8.XI.2017, 254 m, R. Cheung / M. Pierce, ANTWEB1016463, Winkler, IBBL. Geographic range. China (Guangxi), Hong Kong, Japan, Taiwan. Ecology. This is an uncommon species in Hong Kong where it is known only from a few locations (Fig. 10). This species occurs in secondary forests at elevations ranging from 262 to 291 m. It apparently forms small monogynous colonies of about 20 individuals ( Masuko 2009b ). Figure 10. Distribution of Strumigenys species in Hong Kong A S. membranifera , S. minutula , and S. mitis B S. cf. mutica , S. nanzanensis , and S. nathistorisoc sp. n. C S. nepalensis , S. rallarhina , and S. rogeri * D S. sauteri , S. sydorata , and S. tisiphone . Circles represent species previously recorded from Hong Kong, diamonds represent newly recorded species, and stars represent new species. Newly recorded introduced species are shown with red squares. Green shaded portions of the map correspond with higher levels of tree cover, and grey with lower levels of tree cover. *To avoid confusion, S. rogeri (a newly recorded introduced species) is represented by a yellow square instead of a red square.