Calamyzinae

Watson, Charlotte, Gunton, Laetitia M. & Kupriyanova, Elena K., 2024, Three new species of bacterivorous Chrysopetalidae and Microphthalmidae (Annelida) inhabiting a whale fall off eastern Australia, Records of the Australian Museum 76 (5), pp. 249-264 : 254-255

Sub-family Calamyzinae

Hartmann-Schröder, 1971

Diagnosis (from Watson et al., 2016). Very small to large-bodied. Prostomium a shallow lobe fused with anterior segments, two digitiform lateral antennae, palps ventral or ventrolateral; median antenna absent, eyes mostly absent. Segment I generally with dorsal cirri, ventral cirri absent in symbiotic genera; chaetae absent or present. Segment II with dorsal cirri and notochaetae; neurochaetae compound with ‘whip-like’ spinigerous blades or simple hooks, ventral cirri present or absent. Strongly muscularised foregut, large terminal papillae absent or present; jaws present or absent; mouth cover absent. Simple notochaetae present or absent; neurochaetae compound falcigers or simple hooks. Internally camerated chaetae present or absent. Pygidium rounded, with or without anal appendages.

Remarks. Bold text indicates characters present in all taxa within the subfamily Calamyzinae . The subfamily comprises four species in three free-living genera ( Boudemos , Micospina , and Vigtorniella ) and 25 species in 15 ecto- and endo- symbiont genera (Watson, 2022). All members of the Calamyzinae lack a median antenna, as well as modification of chaetal types and ontogenetic jaw change (Dahlgren et al., 2004; Aguado et al., 2013; Watson et al., 2016).