Two new records of hippolytoid shrimps, Lysmata hochi Baeza & Anker, 2008 (Decapoda: Lysmatidae) and Lysmata amboinensis (de Man, 1888) from Lakshadweep Islands, India with taxonomic notes

Abstract

The present study reports the new records of two species of the hippolytid shrimp genus Lysmata Risso, 1816 in the water off Lakshadweep Islands, India from the Arabian Sea, viz. Lysmata hochi Baeza & Anker, 2008 and Lysmata amboinensis (De Man, 1888) with more taxonomic information. Moreover, L. hochi is the first distributional report from the Indian Ocean. It is morphologically similar to L. kuekenthali and differences are discussed. Colour pattern and morphological trait of L. amboinensis are very close to L. grabhami which also differs in the presence of anti-penultimate segment of 3rd maxilliped more than 2.0 times as long as penultimate segment and stylocerite does not reaching the distal end of the cornea. These specimens were obtained at a depth of 0.5-2 m from the intertidal region of Agatti Island. Additionally, we estimated pairwise genetic distances for these two species and congeneric species using cytochrome oxidase subunit I gene sequences where interspecific distances ranged from 11-25.8 %.

The caridean shrimps of the genus Lysmata Risso, 1816 (Decapoda: Lysmatidae) from Madagascar collected during the Atimo-Vatae expedition: a new species and two new records

“…Although the western Atlantic L. hochi has recently been reported from India as a non-indigenous species (Jose et al 2020), the present results of the phylogenetic reconstruction allow to suggest contrarily that L. hochi is in fact the IWP species L. kuekenthali introduced to the Caribbean Sea. The only morphological difference between L. hochi and L. kuekenthali stated by Jose et al (2020) is the bifid stylocerite of the former species. However, in the original description of L. hochi, Baeza & Anker (2008: 149) reported on the stylocerite as being "usually bifid".…”

“…In the past decade, four species of Lysmata have been reported as alien and/or invasive (Soledade et al 2013;Froglia & Deval 2014;Alves et al 2018;Jose et al 2020). Among all the possible mechanisms involved in the introduction of invertebrates, including crustaceans (e.g., ship transport and intentional introductions - Rodríguez & Suárez 2001;Hänfling et al 2011), the aquarium trade seems to play an important role in shrimps (Rhyne et al 2009;Baeza & Behringer 2017).…”

“…Importantly, free-living species in the genus appear to show a high potential for invading other regions, considering that four species so far have been recorded as alien: L. hochi Baeza & Anker, 2008 in India (Jose et al 2020), L. kempi Chace, 1997 in Turkey (Froglia & Deval 2014), L. lipkei Okuno & Fiedler 2010 in Brazil (Alves et al 2018), andL. vittata (Stimpson, 1860) in Brazil too (Soledade et al 2013;Alves et al 2018).…”