Rondeletiola Naef, 1921

Bello, Giambattista, 2020, Evolution of the hectocotylus in Sepiolinae (Cephalopoda: Sepiolidae) and description of four new genera, European Journal of Taxonomy 655, pp. 1-53: 42

publication ID

https://doi.org/10.5852/ejt.2020.655

publication LSID

lsid:zoobank.org:pub:0042EFAE-2E4F-444B-AFB9-E321D16116E8

persistent identifier

http://treatment.plazi.org/id/03968791-BD33-FFD8-91E2-9112FB77FAC6

treatment provided by

Valdenar

scientific name

Rondeletiola Naef, 1921
status

 

Rondeletiola Naef, 1921  

Figs 16–17 View Fig View Fig

Rondeletiola Naef, 1921: 536   .

Type species

Sepietta minor Naef, 1912   , by monotypy.

Diagnosis

Sepiolinae   with fins bluntly angled laterally; their length about half mantle length. Suckers biseriate on all arms. Tentacle club suckers in 16 longitudinal rows. Mantle-head occipital band narrow (not reaching over the ocular globes). Ventral mantle margin slightly sinuate, without any deep funnel indentation. Gladius absent. Unpaired visceral photophore on ventral surface of ink sac, slightly oval, clearly derived from paired light organs joined in sagittal plane. Hectocotylus (male left arm I) tripartite: basal part with three suckers, two ventral and one dorsal; copulatory apparatus with transverse formation of two ventral and two dorsal modified suckerless pedicels all four of them fused at their bases, ventral-most strongly developed hook-like, others hardly developed, dorsal pedicels forming most part of transverse crest; distal part lacking first two ventral suckers, some proximal suckers enlarged in both rows. Female bursa copulatrix roughly ear-shaped, devoid of cover.

Included species

Rondeletiola minor (Naef, 1912)   and R. capensis (Voss, 1962)   .

Remarks

This genus is widely distributed from the NE Atlantic and Mediterranean, throughout the E Atlantic, to the South African part of the Indian Ocean. It is characterized among the sepiolines of this area by its unique visceral light organ, that differs from that of Boletzkyola   gen. nov. (compare with the description of the latter genus). Rondeletiola   is sister genus to Sepietta (Bello 1998)   . The species Inioteuthis capensis   is re-assigned to Rondeletiola   fide Vecchione & Young (2004) and Reid (pers. com.).

Kingdom

Animalia

Phylum

Mollusca

Class

Cephalopoda

Order

Sepiolida

Family

Sepiolidae

Loc

Rondeletiola Naef, 1921

Bello, Giambattista 2020
2020
Loc

Rondeletiola

Naef A. 1921: 536
1921