Myxicola Koch

Darbyshire, Teresa, 2023, Designation of a neotype for Myxicola infundibulum (Montagu, 1808) (Annelida: Sabellidae) and a new species from the UK, European Journal of Taxonomy 900 (1), pp. 106-137 : 115

Genus Myxicola Koch in Renier, 1847

Type species

Amphitrite infundibulum Montagu, 1808 .

Diagnosis (modified from Capa et al. 2019)

Medium- to large-sized sabellids, with variable number of pairs of radioles in semicircular radiolar lobes, each radiole with two rows of vacuolated cells. Basal membrane and radiolar flanges present, basal flanges absent; radiolar eyes present or absent. Dorsal lips with radiolar appendages, pinnular appendages absent; ventral radiolar appendages present or absent, ventral lips developed, extending dorso-ventrally along inner surface of base of radiolar lobes; parallel lamellae and ventral sacs absent. Anterior peristomial ring with narrow ventral lobe. Posterior peristomial ring collar absent. Peristomial vascular loops absent. Peristomial eyespots absent. Thorax with up to eight chaetigers, abdomen with variable number. Glandular ridge on chaetiger 2 present. Ventral shields absent. Interramal eyespots may be present. Thoracic notochaetae and abdominal neurochaetae in irregular bundles, arranged in low, circular tori, groups within fascicles not differentiated. Thoracic uncini acicular, with similarly sized teeth above main fang on transverse rows, hood absent, long handle; neuropodial companion chaetae absent. Abdominal notopodial tori forming almost complete cinctures around body (feature unique among sabellids); uncini avicular, handle absent, breast developed and several rows of shorter teeth above main fang. Abdominal neurochaetae elongate, narrowly hooded. Pygidial eyespots present or absent. Pygidial cirrus absent.