Generally a lashlike appendage.

[Crustacea, general] Narrow distal part of antenna or antennule, usually multiarticulate, occasionally reduced to one or a few articles, without intrinsic musculature.

[Crustacea: Brachyura larvae] Distal endopod portion of megalopal antenna beyond the peduncle that consists of several segments.

Alternative form for Flagellum : Flagella (pl.).