Massinium

Samyn, Yves & Thandar, Ahmed S., 2010, Two new species in the phyllophorid genus Massinium (Echinodermata: Holothuroidea) with redescription of Massinium magnum, Zootaxa 2399, pp. 1-19 : 2-3

Key to the species of the genus Massinium

1. Body wall with rosettes, pseudobuttons and scarce tables ........................................................................................... 2

1’. Body wall with various types of deposits, but never tables.......................................................................................... 3

2. Tentacles with tables and rosettes ............................................................... Massinium dissimilis ( Cherbonnier, 1988)

2’. Tentacles with rosettes only................................................................................. Massinium magnum ( Ludwig, 1882)

3. Body wall with pseudobuttons and rods of various form ............................................................................................. 4

3’. Body wall with pseudobuttons and rosettes, but no rods.............................................................................................. 5

4. Rods of body wall, somewhat U-shaped, up to 110 µm long. With minute, often occluded distal perforations; endemic to South Africa...................................................................... Massinium arthroprocessum ( Thandar, 1989)

4’. Rods up to 105 µm long, often granuliform, only the smallest ones with non-occluded perforations; endemic to Queensland, Australia................................................................................................. Massinium granulosum sp. nov.

5. Tube feet of introvert with rosettes, tables with disc perforated by four central holes and 1-3 rings of peripheral holes and multilocular plates of various shapes; endemic to New Caledonia........................... Massinium albicans sp. nov.

5’. Tube feet of introvert with tables with disc perforated by four central holes and one ring of peripheral holes and simple perforated rods, no rosettes; endemic to KwaZulu-Natal, South Africa................................................................... .......................................................................................................... Massinium maculosum Samyn & Thandar, 2003