First Record of the Sacoglossan Sea Slug Elysia timida (Risso, 1818) (Gastropoda: Heterobranchia: Plakobranchidae) in Bosnia and Herzegovina

The heterobranch Elysia timida is reported as a new species for the malacofauna of Bosnia and Herzegovina based on the finding of a single specimen collected on the 28th February 2021 in the shallow waters of the Neum Bay, Klek Peninsula. Considering the scarcity of previous studies on marine Heterobranchia in Bosnia and Herzegovina, with only 6 species recorded so far, the present record extends the knowledge about this group of molluscs in the area and first summarises the species known from country.