Branchiomma mushaensis Gravier, 1908a: 94–97 Megalomma mushaense Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus 2861 Tovar-Hernández, María Ana Carrera-Parra, Luis F. Zootaxa 2011 2011-04-29 2861 1 1 71 Gravier 1908 a Gravier 1908 [151,631,1123,1150] Insecta Carabidae Megalomma Animalia Coleoptera 41 42 Arthropoda species mushaense   Figure 18K–R      Branchiomma mushaensis Gravier, 1908a: 94–97, Pl. 7, Figs 267–270.   Megalomma mushaense.— Knight-Jones, 1997: 314, Fig. 4N.    Type material examined.[ MNHN]555, holotype,  Branchiomma mushaensis Gravier, 1908a, Red Sea, Djibouti, Gulf of Aden, Gulf of Tadjoura, in  Pocillopora,female with oocytes in medium abdomen, partially dry.   Diagnosis.Eyes in most radioles (spherical); dorsal margins of collar fused to faecal groove; dorsal lappets and dorsal pockets present; thoracic chaetae TypeC; abdominal chaetae narrowly hooded.   Description.Radiolar eyes in most radioles, spherical. Dorsalmost radioles with long tips decreasing gradually towards ventral radioles. Dorsal collar margins fused to faecal groove ( Fig. 18K). Dorsal lappets present, rounded, not longer than lateral collar margins. Dorsal pockets present ( Fig. 18K). Ventral lappets with rounded anterior margins, not overlapped. Anterior peristomial ring not exposed dorsally. Lateral collar margins not covering basal union of radioles. Dorsal lips and dorsal pinnular appendages unknown. Ventral lips unknown. Ventral sacs present. Caruncle absent. Keel unknown. Thoracic tori longest on chaetiger 2. Notopodial fascicles with superior group of elongate, narrowly hooded chaetae ( Fig. 18L–M); and an inferior group of chaetae TypeC ( Fig. 18O). Thoracic uncini with crest surmounted by 7–9 rows of numerous minute teeth, handles 1.5x length of main fang ( Fig. 18Q). Companion chaetae with teardrop-shaped membranes ( Fig. 18N). Abdominal chaetae narrowly hooded ( Fig. 18R). Abdominal uncini with main fang surmounted by 8–10 rows of numerous minute teeth ( Fig. 18P).   Remarks.  Megalomma mushaenseis unique by having dorsalmost radioles with long tips decreasing gradually towards ventral radioles and dorsal lappets rounded, shorter than lateral collar margins. Dorsal lappets in  M. phyllisae,  M. quadrioculatumand  M. vesiculosumare short, equal in length to lateral collar margins. In  M. acrophthalmos,  M. fauchaldi,  M. lanigera,  M. perkinsi, M.sp., and  M. nechamaedorsal lappets are also rounded but longer than lateral collar margins.