Cumanotidae Odhner, 1907

Korshunova, Tatiana, Fletcher, Karin & Martynov, Alexander, 2025, The endless forms are the most differentiated-how taxonomic pseudo-optimization masked natural diversity and evolution: the nudibranch case, Zoological Journal of the Linnean Society 204 (4) : -

publication ID

https://doi.org/10.1093/zoolinnean/zlaf057

publication LSID

lsid:zoobank.org:pub:D09886E-5D7C-40D1-B86A-118A3ADE5773

persistent identifier

https://treatment.plazi.org/id/03EF87FE-FF9E-FFFE-FF1D-FA16FB03FCCF

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scientific name

Cumanotidae Odhner, 1907
status

 

Family Cumanotidae Odhner, 1907 View in CoL

( Figs 1, 2; Table 4)

Odhner 1907: 26. Korshunova et al. 2017a: 67, 72, 73, supplementary materials. Martynov et al. 2020: 1, 3, 12–15.

Diagnosis: Body moderate. Notal edge completely reduced. Ceratal rows regular, numerous cerata on elevations per row. Rhinophores smooth. Anus acleioproctic in anterior/middle part of body. Masticatory edges of jaws bear a single to several rows of denticles, rarely smooth. Radula formula 1.1.1. Central teeth with cusp not compressed by adjacent lateral denticles. Lateral teeth narrow or with moderately attenuated process basally, usually denticulated, rarely smooth. Commonly two proximal receptaculum seminis. Special clasping organ in female part of reproductive system with small hooks may present. Vas deferens moderate in length, prostate moderately distinct. Supplementary and accessory glands absent. Massive external permanent penial collar absent. Penis internal, narrow, rolled, armed or unarmed.

Genera included: Cumanotus Odhner, 1907 .

Remarks: The family Cumanotidae shows a highly peculiar combination of complete reduction of the notal edge, regular ceratal rows, acleioproctic anus in the anterior to middle parts of the dorsal side with a triserial radula, and a special clasping organ, not in the male, but in the female reproductive system in several representatives. No one superfamily and family of the suborder Aeolidacea can approach that very special combination found within the family Cumanotidae . The reduction of the notal edge and acquisition of the regular ceratal rows proceeded in the family Cumanotidae , and in the superfamily Cumanotoidea , independently from other superfamilies ( Figs 1, 2; Table 3, Table 4). The family Cumanotidae also has a highly unusual ‘double’ life mode, which combines both burrowing behaviour with partial swimming, and includes a body shape with a peculiar arrangement of cerata that mimics the large tubulariid hydroids on which it feeds, which in total contributes to a bizarre combination of morphology and molecular patterns.

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