Acromegalomma Gil & Nishi 2017

Key to Acromegalomma species described from Western Atlantic Ocean 1A. Collar dorsal margins not fused to faecal groove............................................................ .. 2 1B. Collar dorsal margins fused to faecal groove................................................................ 5 2A. Subdistal compound eyes only on dorsalmost pair of radioles.................................................. 3 2B. Subdistal compound eyes on most radioles, absent only in ventralmost............................................................................................... A. georgiense (Tovar-Hernández & Carrera-Parra, 2011) 3A. Ventral basal flanges absent............................................................................. 4 3B. Ventral basal flanges present............................................................. A. punctum sp. nov. 4A. All radioles with short tips....................................................... A. bioculatum (Ehlers, 1887) 4B. Dorsalmost radioles with long tips decreasing ventralwards................................................................................................. A. schwindtae Tovar-Hernández, de León-González & Bybee, 2017 5A. Interramal eyespots absent............................................................................. .. 6 5B. Interramal eyespots present....................................................... A. lobiferum (Ehlers, 1887) 6A. Ventral sacs present................................................................................... 7 6B. Ventral sacs absent.............................................................. A. heterops (Perkins, 1984) 7A. Inferior thoracic notochaetae Type C..................................................................... .. 8 7B. Inferior thoracic notochaetae Type A..................................................................... 10 8A. Caruncle present...................................................................................... 9 8B. Caruncle absent........................................... A. fauchaldi (Giangrande, Licciano & Gambi, 2007) 9A. Anterior peristomial ring exposed dorsally and laterally........................................ A. omenae sp. nov. 9B. Anterior peristomial not exposed........................................................ A. scutolenis sp. nov. 10A. Thoracic ventral shields entire............................. A. perkinsi (Tovar-Hernández & Salazar-Vallejo, 2006) 10B Thoracic ventral shields divided in two......................................................... A. josei sp nov.