Siriella dubia Hansen, 1910

Type locality. Off Laiwui, Obi, Indonesia (Hansen 1910) .

Record from Thailand. South-eastern Andaman Sea, next to Phuket Island (Fukuoka & Murano 2002).

Habitat and depth range. Marine, depth: 19–60 m (Fukuoka & Murano 2002) .

Distribution. This species is widely distributed in the warm-water region of the Indo-West Pacific, from Indonesia (Hansen 1910); Philippines (W.M. Tattersall 1951; Murano & Fukuoka 2008); South China Sea (Ii 1964; Wang & Liu 1994; Murano & Fukuoka 2008); Japan (Murano & Fukuoka 2008); Australia (W.M. Tattersall 1936; Lowry & Stoddart 2003); Malacca Strait (O.S. Tattersall 1965); Andaman Sea (Fukuoka and Murano 2002); Andaman Islands (W.M. Tattersall 1922); Arabian Sea off India (Pillai 1964; 1973); Madagascar and Mozambique (Vereshchaka 1995); India (Biju & Panampunnayil 2009; Biju et al. 2016).

Remarks. The species S. dubia is placed within the Dubia-group, and is recognized by the following characters: the endopods of middle pairs of thoracic limbs are longer than the anterior and posterior pairs of endopods; pseudobranchial rami of second to fourth male pleopods spirally coiled; endopod of both third and fourth male pleopods with remarkably modified setae at the terminal part; proximal segment of uropodal exopod armed with both spines and setae on outer margin; inner margin of uropodal endopod armed with spines showing alternate arrangement of longer and shorter ones; telson more than 2.5 times as long as broad at base (Murano & Fukuoka 2008).