Namalycastis

Conde-Vela, Víctor Manuel, 2013, Namalycastis occulta n. sp. and a new record of N. borealis (Polychaeta: Nereididae: Namanereidinae) from the Northwestern Caribbean Sea, Zootaxa 3721 (5), pp. 475-487 : 485

Key to Namalycastis species from the Grand Caribbean region

(Modified from Glasby, 1999)

1. Eyes present.......................................................................................... 2

- Eyes absent............................................................................. N. occulta n. sp.

2(1). Heterogomph falcigers present in all parapodia in sub- and supra-preacicular fascicle; notochaetae generally present....... 3

- Heterogomph falcigers in anterior parapodia, replaced by heterogomph spinigers posteriorly in sub- and supra-preacicular fas- cicle............................................................................................... 4

3(2). Sub-neuracicular spinigers in mid-posterior parapodia with blades having short, fine serrations proximally............................................................................................... N. borealis Glasby, 1999 1

- Sub-neuracicular spinigers in mid-posterior parapodia with blades having coarse serrations proximally.............................................................................. N. abiuma (Müller & Grube in Grube, 1872) group2

4(2). Notosetae absent; small species with mature individuals up to 90 chaetigers................. N. intermedia Glasby, 1999 3

- Notosetae present as sesquigomph spinigers; large species with mature individuals usually exceeding 100 chaetigers..................................................................................... N. macroplatis Glasby, 1999 4