An annotated checklist of the species of Lopogastrida and Mysida (Crustacea Peracarida) from Thailand and its adjacent waters Author Yolanda, Rofiza Author Ambarwati, Reni Author Rahayu, Dwi Anggorowati Author Budijastuti, Widowati Author Fitrihidajati, Herlina Author Kuntjoro, Sunu Author Rachmadiarti, Fida Author Purnomo, Tarzan text Zootaxa 2023 2023-02-20 5244 3 201 232 http://dx.doi.org/10.11646/zootaxa.5244.3.1 journal article 10.11646/zootaxa.5244.3.1 1175-5326 C0EA98E9-2DE2-4B56-B0EB-0E08308923F2 Siriella australiensis Panampunnayil, 1995 Type locality. Southwest coast of Australia ( Panampunnayil 1995 ) . Record from Thailand . Khlong Don Sak, Surat Thani Province ( Murano & Fukuoka 2008 ). Habitat and depth range. Murano & Fukuoka (2008) did not provide the habitat and depth of the collected specimens. The occurrence of this species has been recorded from 1 up to 50 meter in depth (see Panampunnayil 1995 ; Biju et al. 2006 ). Distribution. Siriella australiensis is known from Australia ( Panampunnayil 1995 ), Minicoy lagoon, India ( Biju et al. 2006 ), Philippines and Thailand ( Murano & Fukuoka 2008 ). Remarks. Hansen (1910) divided 15 Asian species of the genus Siriella into 4 groups. Later, Ii (1964) expanded the grouping of the Siriella mysids into six groups, Thompsoni -group , Inornata -group , Dubia -group , Pacifica - group , Aiquiremis -group and Anomala -group . However, after further revision, Ii’s (1964) grouping was expanded with 3 new groups to include previous non-categorized species. These were the Australiensis -group , Brevicaudata - group , and Singularis -group ( Murano & Fukuoka 2008 ). Species Siriella australiensis and S . scissilis are placed within the Australiensis-group due to the anterior margin of carapace more or less produced into triangular rostral plate; labrum with long frontal process. Endopod of middle pairs of thoracic limbs a little longer than those of anterior and posterior pairs; pseudobranchial rami of second to fourth male pleopods spirally coiled; exopod of third male pleopod and both rami of fourth male pleopod with or without remarkably modified setae; proximal segment of uropodal exopod armed with only spines on outer margin; inner margin of uropodal endopod armed with spines showing alternate arrangement of longer and shorter ones; telson long, more than 2.5 times as long as broad at base ( Murano & Fukuoka 2008 ).