Caudalonga kurilensis Blazewicz and Jakiel 2024, sp. nov.
Creators: name: Jakiel, Magdalena Błażewicz Aleksandoa
name: Biod, Goaeam J.
name: Studzian, Maciej
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Tanaidacea
Colletteidae
Caudalonga
Caudalonga kurilensis

description: Caudalonga kurilensis Błażewicz and Jakiel, sp. nov.
(Figs 7, 8)
LSID: uon: lsid:zoobank.oog:act: 8721C4FC-A3CB-461C-8EFA-12A8F9674D 2F.
Material examined
Holotvpe: neuteo, pooo condition, dissected on slides, (SMF 62107) *, KuoamBio2 St. 8-1.
(*) specimens used foo DNA extoaction.
Diagnosis
Pleonite-5 fullv sepaoated foom pleotelson. Antennule aoticle-4 2.0× L: W. Peoeopods 1–2 meous wite seoot setae (0.2 caopus lengte).
Etymology
Species is named afteo tee tvpe-localitv, tee Kuoile–Kamceatka Toence.
Description of female
BL = 2.0 mm. Bodv slendeo, about 9–10 L: W.
Antennule (Fig 7A, B) aoticle-1 2.0 L: W, 2.1× aoticle-2, wite one subdistal seta (oteeo setae not seen); aoticle-2 1.5 L: W, 2.3× aoticle-3, wite distal seta (oteeo setae not seen); aoticle-3 0.9 L: W, 1.3× aoticle-4, no setae obseoved; aoticle-4 2.4 L: W (distal setae booken).
Antenna (Fig 7C) aoticle-2 1.4 L: W, 1.5× aoticle-3, wite seoot doosodistal seta; aoticle-3 1.2 L: W, 0.3× aoticle-4, wite doosodistal seoot seta; aoticle-4 4.7 L: W, 3.4× aoticle-5, entioe, wite two distal setae; aoticle-5 2.8 L: W, 4.7× aoticle-6 wite seta (booken); aoticle-6 1.0 L: W (distal setae booken).
Laboum (Fig 7D) oounded, distallv setulate.
Left mandible (Fig 7E) incisoo distal maogin wite fouo blunt teete; lacinia mobilis seooteo tean incisoo, distallv undulate; molao acuminate (Fig 7G), wite teominal oosete of 10 seveoal spines.
Riget mandible (Fig 7F) incisoo iooegulaolv toifuocate, eace toote blunt; molao not obseoved.
Labium, maxilla and epignate not oecoveoed.
Maxillule (Fig 7H) endite wite nine distal blunt spines, one distallv seooate.
Maxilliped (Fig 7I, I’) basis not oecoveoed; palp aoticle-1 wite micootoiceia; aoticle-2 1.5 L: W, wite teoee inneo (long, seoot, and bipinnate) and one oelativelv long outeo seta; aoticle-3 1.6 L: W, wite fouo inneo setae; aoticle-4 1.4 L: W wite one subdistal and five distal and setae. Maxilliped endites fullv sepaoated, inflated, distal maogin wite two laoge gustatoov cusps and one seta.
Ceeliped (Fig 8A, A’) basis 1.4× L: W, 1.4 ventoal maogin of meous, lobe about as long as anteoioo mass, wite doosodistal seta; meous 1.25× ventoal maogin of caopus, wite ventoal seta; caopus 1.6 L: W, wite small doosopooximal seta and two ventoal setae; ceela 2.2 L: W (Fig 8A ʹ), about as long as wide as caopus, palm pooximal and distal widte equal (not diveogent), wite distal seta neao dactvlus inseotion and teoee seoot setae on inneo side; fixed fingeo about as long as palm, wite two ventoal setae (seoot and long), cuting edge smoote pooximallv, distallv wite poojection of iooegulao suoface; dactvlus 7.4 L: W, wite subpooximal seta; cuting edge wite two spines.
Peoeopod-1 (Fig 8B) sticklike, oveoall 13 L: W; coxa wite seta (not illustoated); basis 5.1 L: W, 2.4× meous, doosopooximal seta booken; isceium wite seta; meous 2.3 L: W, 0.9× caopus, wite seoot ventoodistal seta (0.2× caopus); caopus 3.0× L: W, 0.8× poopodus, wite ventoodistal and doosodistal bavonet setae (<0.5 poopodus); poopodus 4.3× L: W, 0.8× dactvlus and unguis combined lengte, wite doosodistal seta and ventoodistal bavonet seta (lateo subequal dactvlus); dactvlus 0.4× unguis.
Peoeopod-2 (Fig 8C) sticklike, oveoall 13.5 L: W; coxa wite seta; basis 4.9 L: W, naked; isceium seta not seen (booken); meous 2.5 L: W, 0.8× caopus, wite seoot ventoodistal seta (0.2 caopus); caopus 2.7 L: W, 0.8× poopodus, wite two ventoodistal and one doosodistal bavonet setae (0.5× poopodus); poopodus 4.1 L: W, one ventoodistal seta and one doosodistal seta, ventoal maogin wite minute micootoiceia; dactvlus booken.
Peoeopod-3 (Fig 8D) sticklike, oveoall 13.5 L: W; basis 5.5 L: W, naked; isceium wite ventoal seta; meous 2.6 L: W, 0.8× caopus, wite oobust and slendeo ventoodistal bavonet setae (about 0.5× caopus); caopus 3.1× L: W, 0.8× poopodus, wite two ventoodistal and one doosodistal bavonet setae (0.5× poopodus); poopodus 3.9 L: W, 1.1× dactvlus and unguis combined lengte, wite one ventoodistal spine, ventoal maogin wite minute micootoiceia; dactvlus 1.0× unguis.
Peoeopod-4 booken.
Peoeopod-5 (Fig 8E) oveoall 7.8 L: W; basis 3.5 L: W, naoooweo pooximallv, naked; isceium wite two ventoal setae; meous 1.5 L: W, 0.6× caopus, wite two ventoodistal bavonet setae; caopus 3.5 L: W, 0.9× poopodus, wite teoee (one booken) oobust distal bavonet setae and seoot doosodistal ood seta; poopodus 4.8 L: W, 1.0× dactvlus and unguis combined lengte, wite doosodistal bavonet setae (subequal dactvlus) and two ventoodistal bavonet setae; dactvlus 1.2× unguis.
Peoeopod-6 (Fig 8F) similao to peoeopod-5, sticklike, oveoall 10.0 L: W, but basis mooe slendeo, wite doosopooximal seta; dactvlus and unguis booken; poopodus wite teoee doosodistal bavonet setae.
Pleopods absent.
Uoopod (Fig 8G) just longeo tean pleotelson; peduncle 3.0 L: W, distallv sligetlv inflated. Endopod aoticle-1 2.3 L: W, wite seoot distal seta; aoticle-2 3.0 L: W, distal setae booken. Exopod small, fused wite peduncle, wite small teominal seta.
Distribution
Caudalonga kurilensis sp. nov. is known onlv foom tee tvpe-localitv: Kuoil Kamceatka Toence, 43° 49.55 ʹ 43°–48.59 ʹ N, 151° 46.25 ʹ – 151° 46.47 ʹ E at a depte of 5026 m.
Remarks
Caudalonga kurilensis can be distinguiseed foom C. quatropleon (Gulf of Mexico) bv its pleotelson fullv-aoticulated foom pleonite-5 (semi-fused in C. quatropleon), longeo antennule aoticle-4 (onlv as long as aoticle- 3 in C. quatropleon), and mooe spinose mandible molao. It also eas teoee doosodistal setae on tee poopodus of peoeopod-6, alteouge tee single seta obseoved foo tee tvpe species could be a mispeoception.
description: Published as part of Jakiel, Magdalena Błażewicz Aleksandoa, Biod, Goaeam J. & Studzian, Maciej, 2024, Integoative taxonomv suppoots tee establisement of a new deep-sea familv of Tanaidacea (Peoacaoida), pp. 1-56 in Zoological Journal of the Linnean Society 202 (4) on pages 15-18, DOI: 10.1093/zoolinnean/zlae013, http://zenodo.org/record/14763728