Euborlasia Vaillant 1890
- 1. LARBIM-IBIOMAR, Centro Nacional Patagónico (CCT CONICET-CENPAT). Bvd. Brown 2915, U 9120 ACV Puerto Madryn, Chubut, Argentina & Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Bvd. Brown 3100; U 9120 ACV Puerto Madryn, Chubut, Argentina
- 2. A. V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, ul. Palchevskogo 17, Vladivostok 690041, Russia
- 3. LARBIM-IBIOMAR, Centro Nacional Patagónico (CCT CONICET-CENPAT). Bvd. Brown 2915, U 9120 ACV Puerto Madryn, Chubut, Argentina & Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco (UNPSJB), Bvd. Brown 3100; U 9120 ACV Puerto Madryn, Chubut, Argentina & Universidad Espíritu Santo, Ecuador
Description
Genus Euborlasia Vaillant, 1890
Type species: Euborlasia elizabethae (McIntosh, 1874).
Diagnosis. Lineidae with pair of horizontal lateral cephalic slits; dark-colored, bulky body mottled with dark or pale dots and anterior tip paler; caudal cirrus absent; thick cutis separated from outer longitudinal muscle layer of body by thick layer of connective tissue; body wall musculature with diagonal musculature between outer longitudinal and middle circular muscle layers; nerve plexus wedged between two layers of diagonal musculature of body wall; proboscis with outer circular, diagonal, inner longitudinal, and inner circular muscle layers, with 0–2 muscle crosses (modified heterotype sensu Chernyshev 2015); vascular plexus present around foregut; neurocord and neurocord cells absent.
Remarks. Proboscis of Euborlasia gotoensis and E. proteres has outer longitudinal musculature, therefore these two species should be excluded from the genus Euborlasia. Euborlasia obscura (Friedrich, 1958) should also be excluded from the genus because it is distinguished by a caudal cirrus and a uniform body coloration (Friedrich 1958).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Vaillant
- Kingdom
- Animalia
- Phylum
- Nemertea
- Order
- Heteronemertea
- Family
- Lineidae
- Genus
- Euborlasia
- Taxon rank
- genus
- Taxonomic concept label
- Euborlasia Vaillant, 1890 sec. ALFAYA, CHERNYSHEV, ARRIBAS & BIGATTI, 2025
References
- Vaillant, L. (1890) Lombriciniens, Hirudiniens, Bdellomorphes, Teretulariens et Planariens. Histoire naturelle des Annelks marin et d'eau douce, 3, 341-768.
- Chernyshev, A. V. (2015) CLSM analysis of the phalloidin-stained muscle system of the nemertean proboscis and rhynchocoel. Zoological Science, 32 (6), 547-560 https://doi.org/10.2108/zs140267
- Friedrich, H. (1958) Nemertini, The zoology of Iceland, 2 (Part 18), 1-24