Megasyllis, Martín & Hutchings & Aguado, 2008

Martín, Guillermo San, Hutchings, Pat & Aguado, María Teresa, 2008, Syllinae (Polychaeta, Syllidae) from Australia. Part. 2. Genera Inermosyllis, Megasyllis n. gen., Opisthosyllis, and Trypanosyllis, Zootaxa 1840, pp. 1-53 : 6

Key to Australian species of Megasyllis

1. Some compound chaetae with proximal tooth larger than distal tooth. Blades of most compound chaetae with long, filiform subdistal spines............................................................................................................2

- Compound chaetae with both teeth similar in size ( Fig. 3B). Blades of compound chaetae without long, filiform subdistal spines........................................................................................................ M. corruscans

2. Blades of ventral compound chaetae with proximal teeth slightly longer than distal ones, more marked on posterior parapodia ( Fig. 13B). Subdistal spines of blades extending to level of proximal tooth ( Fig. 13B) ...................................................................................................................................................... M. inflata

- Blades of most posterior ventral compound chaetae with proximal tooth distinctly longer than distal one ( Fig. 10D). Subdistal spines of blades extending beyond proximal tooth ( Fig. 10D)........ M. heterosetosa