New record of Urocaridella antonbruunii (Bruce, 1967) from Southern India with taxonomic Keys of Urocaridella Borradaile, 1915 (Decapoda; Palaemonidae)

摘要

The 'cleaning rock pool' shrimp commonly inhabit the shallow waters of reef and crevices regions at 0.5-3.0 m depth. Recent exploration conducted off the Gulf of Mannar and Agatti Island yielded the species, Urocaridella antonbruunii (Bruce, 1967) from the bottom curve of the coral boulder at a depth of 0.5-1.0 m. This is the new record for the Gulf of Mannar and Lakshadweep waters. Major distinguishing morphological characters of the congener's were described and illustrated. The molecular analysis confirmed the species occurrence in Indian waters followed the intraspecific and interspecific genetic divergences (16S gene) were estimated between 0.3-2.1% for within species and 6.4-11.2% for between species respectively. Additionally, we updated and provided the illustrative key characters for all members of the genus Urocaridella.