Scalibregma Rathke 1843

• Main Authors: Mendes, Samuel Lucas Da Silva Delgado, Rizzo, Alexandra E., Paiva, Paulo Cesar De
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Scalibregmatidae; Scalibregma; Antarc*; Antarctica; East Antarctica
• Online Access: https://doi.org/10.5281/zenodo.10010307; http://treatment.plazi.org/id/1B58878EFF9EFFA7FF35FD5D2FDA0980

Key to species of Scalibregma 1 Branchiae present from chaetigers 2–5. 2 - Branchiae present from chaetigers 3–5. 3 2(1) Lyrate chaetae from chaetiger 2. 4 - Lyrate chaetae from chaetiger 3. S . celticum Mackie, 1991 (Wales, England) 3(1) Lyrate chaetae with equal tynes. S. lanai sp. nov . (Brazil) - Lyrate chaetae with unequal tynes. 7 4(2) Peristomium dorsally uniannulated. 5 - Peristomium dorsally biannulated. S. californicum Blake, 2000 (California, USA) 5(4) Mouth’s upper lip biannulated. 6 - Mouth’s upper lip uniannulated; mouth’s lower lip biannulated. S. australis Blake, 2015 (East Antarctica Peninsula) 6(5) Chaetigers 1–3 triannulated; quadriannulated on mid-body, then pentannulated posteriorly; lower lip uniannulated. S. inflatum (Ashworth, 1901) (Molde, Norway) - Chaetiger 1 triannulated, then quadriannulated from chaetigers 2–5; pentannulated posteriorly; mouth’s lower lip biannulated. S. cynthiae sp. nov . (Brazil) 7(3) Long and slender frontal horns; up to 14 lyrate chaetae per fascicle. S . stenocerum (Bertelsen & Weston, 1980) (Florida, USA) - Short and digitiform horns; up to 12 lyrate chaetae per fascicle. S. hanseni Bakken, Oug & Kongsrud, 2014 (Egga, Norway) Published as part of Mendes, Samuel Lucas Da Silva Delgado, Rizzo, Alexandra E. & Paiva, Paulo Cesar De, 2023, Unravelling the diversity of Scalibregma Rathke, 1843 (Annelida: ' Polychaeta': Scalibregmatidae) from southeast Brazilian coast, pp. 441-454 in Zootaxa 5353 (5) on page 452, DOI:10.11646/zootaxa.5353.5.3, http://zenodo.org/record/10010274