Megalomma, Johansson, 1925

Capa, María & Murray, Anna, 2009, Review of the Genus Megalomma (Polychaeta: Sabellidae) in Australia with Description of Three New Species, New Records and Notes on Certain Features with Phylogenetic Implications, Records of the Australian Museum 61 (2), pp. 201-224 : 222

Key to Australian species of Megalomma

1 Dorsal collar margins fused to the faecal groove .......................................................................... 2

—— Dorsal collar margins well separated ............................................................................................. 4

2 Dorsal collar lappets present .......................................................................................................... 3

—— Dorsal lappets absent ............................................................................................... M. inflata n.sp.

3 Lappets large, spatulate in shape ................................................................... M. cf. acrophthalmos

—— Low lappets. Over 20 rows cells in radiolar skeleton........................................... M. phyllisae n.sp.

4 Subdistal eyes in dorsalmost and lateral radioles .............................................. M. interrupta n.sp.

—— Subdistal eyes present only in dorsal most radioles (1–3 pairs) ............................. M. cf. miyukiae the species described in Australia.