An annotated checklist of the species of Lopogastrida and Mysida (Crustacea: Peracarida) from Thailand and its adjacent waters.

A compilation of mysid shrimps species found in brackish water to seawater has been carried out based on published records. The checklist includes the taxonomic position of each species, local distribution and depth range, the geographic zones and also the bibliographic references where they were recorded. Altogether 3 Lophogastrida and 52 Mysida species and 1 subspecies are listed. Most of them are distributed in the Andaman Sea (41 species), some in the Gulf of Thailand (13 species) and a few in the Songkhla Lagoon System (5 species). Mysids from the tribe Erythropini and Neomysini are the most predominant overall recorded species. Two of the recorded Mysida species are possibly endemic to the Songkhla Lagoon System (Deltamysis songkhlaensis and Nanomysis siamensis), whereas two species are endemic to the Phuket Island (Anisomysis phuketensis and Erythrops phuketensis). Previously, Rhopalophthalmus egregius was claimed to live in the Songkhla Lagoon System, however, further investigation show that this is not the case.