Abstract
The genus Odysseylana Malyutina, 1995 is revised and a new diagnosis presented; two new species from Singapore are described: Odysseylana sakijang sp. nov. and Odysseylana temasek sp. nov. The monotypic genus Parilcirolana Yu & Li, 2001, is placed in synonymy, bringing total number of species in Odysseylana to four including the type species Odysseylana sirenkoi Malyutina, 1995 and Odysseylana setosa (Yu & Li, 2001) comb. nov. The genus is known only from coastal waters from Singapore to off Macau, western Pacific. The principal distinguishing character of Odysseylana are an elongate body shape (2.9-3.5 long as greatest width), head without a rostral point, pentagonal and flat frontal lamina; antenna peduncle articles 1-3 short, 4 and 5 subequal in length and longest; and pleopod 1 peduncle quadrate, and a slender pleopod 1 endopod.
Highlights
The Cirolanidae is a large family with 61 genera and 497 species worldwide (Bruce & Schotte 2015)
The Coral Triangle, which lies within the Indo-Malaysian region (Indonesia, Singapore, Malaysia, Philippines) is recognised to be a region of extremely high faunal diversity (Poore & Bruce 2012; Veron et al 2009)
The earliest records from the Indo-Malaysian region are those of Bleeker (1857), who published on fish parasitic marine isopods from “Batavia” (= Jakarta)
Summary
The Cirolanidae is a large family with 61 genera and 497 species worldwide (Bruce & Schotte 2015). Odysseylana Malyutina, 1995 can be identified by the following characters: elongate body shape (2.9–3.5 long as greatest width), the absence of rostral point; frontal lamina pentagonal; antenna peduncle articles 4 and 5 subequal in length with 4 the longest; pereopods 1–3 with the superodistal margin of ischium and merus moderately produced; pleopod 1 peduncle quadrate, and pleopod 1 endopod slender, 48–65% width of exopod.
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