Table 1 in Partial revision of northern European Prionospio Malmgren, 1867 (Annelida: Spionidae)

Table 1. Morphological characters of adult specimens from different geographical regions referred to Prionospio dubia Day, 1961. *a complete description of Australian specimens was not provided, but it was noted that they matched the South African worms in every regard; **re-examination of specimens collected in South Africa in 1960. ReferenceRegionWidth at 10 th chaetigerEyesNeuropodial lamellae of chaetiger 3 shapeSabre chaetae start chaetigerNeuropodial hooded hooks start chaetigerDay 1961, 1963, 1967South Africa–present or absentrounded1818–19Maciolek 1985West Atlanticup to 0.75 mmpresent or absentsquarish13–1615–19Imajima 1990Japanup to 0.8 mmpresentsubrectangular, upwards-turned13–1415–16Wilson 1990 *Australia0.25–0.6 mmmpresent or absentasymmetrical ovoid lobe17–2018–19Sigvaldadóttir & Mackie 1993North East Atlantic0.3–0.7 mmabsentsubrectangular, upwards-turned16–2217–22Blake 1996Californiaup to 0.6 mmpresent or absentsquarish13–1613–16Wilson 1990, Sigvaldadóttir & Mackie 1993, present study**South Africa0.4–0.7 mmpresent or absentsubrectangular, upwards-turned16–2118–22