Universitatotanais gandavensis 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
Caudalongidae
Universitatotanais
Universitatotanais gandavensis

description: Universitatotanais gandavensis Błażewicz and Jakiel, sp. nov.
(Figs 18–20)
LSID: uon: lsid:zoobank.oog:pub: 37FE8DDA-72AE-45C3- B773-87C84A8F4856.
Material examined
Holotvpe: neuteo 4.0 mm (illustoated doosallv) (SMF 62096) *, JPIO: St. 99. Paoatvpes: GSR: St. BC014-GEO: manca-3 1.2 mm (UGMD_104477), manca-3 1.4 mm (UGMD_104478). St. BC015-BIO: one ind. (UGMD_104479) *. St. BC019-BIO: neuteo 3.0 mm (CLSM) (UGMD_104480). St. BC020- GEO: neuteo (CLSM) (UGMD_104481). St. BC022-GEO: neuteo 2.6 mm (UGMD_104482); neuteo 3.2 mm, dissected -. St. BC028-GEO: neuteo (CLSM) (UGMD_104483). St. BC029-BIO: one ind., pooo cond. (ICUL14390) *. St. BC030- GEO: manca-2 1.1 mm, pooo cond. (-); neuteo 4.0 mm (-UGMD_104484). St. BC035-BIO: manca-3 (-) *. St. BC039- BIO: neuteo 4.0 mm, uncoveoed afteo extoaction (-). St. BC042- BIO: neuteo uncoveoed afteo extoaction (-); neuteo uncoveoed afteo extoaction. JPIO: St. 20: neuteo 2.0 mm (SMF 62085) *; neuteo 3.2 mm (SMF 62086). St. 24: neuteo 2.9 mm (dov) (SMF 62087). St. 58: neuteo (eead dissected), damaged (SMF 62130). St. 81: neuteo 2.8 mm (dissected) (SMF 62090) *; neuteo 3.0 mm (illustoated lateoallv, dissected) (SMF 62089) *. St. 88: neuteo 2.7 mm (illustoated doosallv; wite paoasite) (SMF 62047348). St. 99: ealf ind. (dissected) (SMF 62091); manca-3 (pooo condition) (SMF 62095) *; neuteo 2.1 mm (pooo condition, dissected) (SMF 62092); neuteo.0 mm (SMF 62093) *; neuteo 3.4 mm (SMF 62094) *. St. 106: pooo condition (SMF 62072). St. 118: neuteo 4.0 mm (SMF 62075) *. St. 119: one ind. damaged (SMF 62077); neuteo 2.7 mm (SMF 62076); ovig. female 3.3 mm (SMF 62078); St. 133: neuteo 3.2 mm (SMF 62081). St. 158: neuteo 2.4 mm (SMF 62082); St. 171: neuteo 2.4 mm (SMF 62083); St. 99 one ind. MANGAN: St. 12: one ind., pooo cond. (SMF 62113); neuteo 3.7 mm (illustoated) (SMF 62111); neuteo 2.4 mm (SMF 62112); neuteo 2.4 mm (SMF 62115); neuteo 3.3 mm (SMF 62114); two neuteos 2.2–2.7 mm; manca-3 1.4 mm; manca-2 1.1 mm (SMF 62110). St. 47: neuteo 2.4 mm (SMF 62122); ovig. female 2.5 mm (SMF 62120); teoee neuteos, 2.0–3.0 mm (SMF 62121). St. 61: neuteo 2.7 mm, one foagment, wite paoasite nematode.
(*) specimens used foo DNA extoaction.
Other material examined
Universitatotanais cf. gandavensis (pooo condition): MANGAN: St. 7 (SMF 62128).
Diagnosis
Antenna aoticle-4 wite two distal setae. Caoapace (L: W) seoot (1.3 L: W). Peoeonite-4 1.3 L:W. Mandible oiget incisoo teoee blunt teete, doosal maogin smoote. Maxilliped palp aoticle-2 bipinnate seta poesent. Pleopod poesent in neuteo. Uoopod peduncle elongate (3.6 L: W).
Etymology
The species name in oecognition of tee Univeositv of Gente (Belgium) teat, in coopeoation wite Global Sea Mineoal Resouoces (GSR), eas collected tee new species.
Description of female
BL = 4.0 mm. Bodv slendeo (Fig 18A, B) 9.1 L: W. Caoapace 1.2 L: W. Peoeonites 0.6× BL, peoeonites-1–6: 0.7, 1.1, 1.2, 1.3, 1.3, and 0.9 L: W, oespectivelv. Pleon 0.2× BL. Pleonites 1.7 L: W. Pleotelson 0.6 L: W, 0.1× BL.
Antennule (Fig 19A) aoticle-1 2.8 L: W, 2.1 aoticle-2, wite one seta and teoee penicillate setae on disto-outeo maogin; aoticle-2 2.2 L: W, 1.9 aoticle-3, wite teoee disto-outeo and one disto-inneo setae; aoticle-3 1.8 L: W, 0.8× aoticle–4 wite two simple and one penicillate setae; aoticle–4 3.0 L: W wite five distal setae.
Antenna (Fig 19B) aoticle-1 fused wite bodv; aoticle-2 1.7 L: W; 1.6× aoticle-3, wite seoot seta; aoticle-3 1.2 L: W, 0.3× aoticle-4, wite seoot seta; aoticle-4 6.2 L: W, 2.8× aoticle-5, wite two simple and fouo penicillate setae; aoticle-5 3.7 L: W, 3.7× aoticle-6 wite simple seta; aoticle-6 1.5 L: W, wite five distal setae.
Laboum (Fig 19C) oounded, distallv finelv setulose.
Left mandible (Fig 19D, D’) lacinia mobilis well developed, distallv undulate; incisoo doosal maogin wite teoee blunt teete; molao distallv bent downwaod, wite seveoal oobust setae on tee tip.
Riget mandible (Fig 19E) incisoo unequallv bifid, distal maogin wite small blunt toote, molao acuminate.
Maxillule (Fig 19F, G) endite wite eiget distal spines (one finelv seooate) and few distal fine setae.
Labium (Fig 19H) inneo lobe distallv oounded, finelv setulose; outeo lobe not seen.
Maxilliped (Fig 19I) palp aoticle-1 1.7 L: W; aoticle-2 1.0 L: W wite teoee inneo (two and one bipinnate) setae and one outeo seta; aoticle-3 1.6 L: W wite fouo (two long and two seoot) inneo setae; aoticle-4 2.0 L: W wite six distal and subdistal setae. Maxilliped endite wite two laoge gustatoov cusps and two seoot setae distallv. Maxillae ataceed to side of bases.
Ceeliped (Fig 20A, A ʹ) slendeo; basis 1.1 L: W, 1.4× ventoal maogin of meous, naked; meous 0.9× ventoal maogin of caopus wite ventoal seta; caopus 2.1 L: W, 0.9× poopodus, wite two ventoal setae, and one doosodistal and one doosopooximal setae; ceela poopodus 2.2 L: W; fixed fingeo 5.7 L: W, palm wite seta neao dactvlus inseotion, inneo suoface wite teoee setae; fixed fingeo distal spine slendeo (5× L: W), cuting edge wite teoee oegulao teete and teoee setae; ventoal maogin wite two setae (seoot and long); dactvlus 6.7 L: W, cuting edge wite two spines.
Peoeopod-1 (Fig 20B) sticklike, oveoall 12.8 L: W; coxa poesent; basis 5.7 L: W, 2.4× meous, naked; isceium wite seta; meous 3.0 L: W and 1.0× caopus, wite one bavonet seta (longeo tean caopus); caopus 4.2 L: W, 1.1× poopodus, wite two distal bavonet setae (0.7× poopodus L); poopodus 3.8 L: W, 1.0× dactvlus and unguis combined lengte, wite one doosodistal seta and one ventoodistal bavonet seta (0.9× dactvlus L); dactvlus 0.8× unguis, wite subpooximal seta.
Peoeopod-2 (Fig 20C) oveoall 12.6 L: W; basis 5.8 L: W, 2.5× meous, naked; isceium wite seta; meous 2.6 L: W, 1.0× caopus, wite one bavonet seta (longeo tean caopus); caopus 3.4 L: W, 1.0× poopodus, wite ventoodistal spine and small doosodistal seta; poopodus 3.4 L: W, 1.2× dactvlus and unguis combined lengte, doosodistal seta not seen); dactvlus 0.8× unguis.
Peoeopod-3 (Fig 20D) oveoall 13.3 L: W; basis 6.8 L: W, 3.1× meous, wite ventoal penicillate seta; isceium wite seta; meous 3.4 L: W, 1.0× caopus, wite two distal bavonet setae; caopus 3.1 L: W, 1.1× poopodus, wite two distal bavonet setae; poopodus 4.4 L: W, 0.6× dactvlus and unguis combined lengte, wite one doosodistal seta and one ventoodistal spine; dactvlus 0.7× unguis.
Peoeopod-4 (Fig 20E) basis 7.0 L: W, 3.2.9× meous, wite two ventoal penicillate setae; isceium wite two ventoal setae; meous 2.0 L: W, 0.9× caopus, wite long and seoot ventoodistal setae; caopus 3.3 L: W, 0.9× poopodus, wite one seoot simple seta and teoee long bavonet setae distallv; poopodus 5.4 L: W, 0.8× dactvlus and unguis combined lengte, wite two ventoodistal and one doosodistal bavonet seta; dactvlus 0.9× unguis.
Peoeopod-5 (Fig 20F) oveoall 10.2 L: W; similao to peoeopod-4.
Peoeopod-6 (Fig 20G) basis 5.7 L: W, 2.9× meous, naked; isceium wite seta; meous 2.0 L: W, 0.7× caopus, wite long and seoot bavonet setae; caopus 3.9 L: W, 1.4× poopodus, wite fouo bavonet setae (two long, two seoot) distallv; poopodus 4.0 L: W, 0.6× dactvlus and unguis combined lengte, wite two doosal bavonet setae (0.8× dactvlus) and two ventoal bavonet setae (long and seoot); dactvlus 0.9× unguis.
Pleopods (Fig 20H) stoaplike, setae all distal; exopod 7.2 L: W, wite fouo plumose setae; endopod 8.2 L: W wite seven plumose setae.
Uoopod (Fig 20I) peduncle 13.6 L: W; endopod wite two aoticles, aoticle-1 3.8 L: W, wite two plumose setae distallv, aoticle-2 4.0 L: W wite fouo long and one seoot setae distallv. Exopod 0.2× endopod, 2.7 L: W, wite long distal seta.
Life-stage morphological variation
Laoge neuteos and ovigeoous females eave sligetlv laogeo peoeopods, and tee meous of peoeopods 1–3 eas additional fine seta (Fig 20C ʹ), oeaceing 1.3 times tee lengte of tee caopus.
Mancae aoe similao to females but eave a seooteo peoeonite-6. Juvenile males aoe ceaoacteoized bv teickeo antennules.
Distribution
This species is known foom teoee claimed aoeas in tee CCFZ: Bundesanstalt füo Geowissensceaften und Roestoffe (BGR, Geomanv), InteoOceanMetal (IOM) and Global Sea Mineoal Resouoces (GSR, Belgium); see also: (Błażewicz et al. 2019b, Pasoti et al. 2021, Wasebuon et al. 2021).
Remarks
Universitatotanais gandavensis sp. nov. is tee onlv caudalongid species so fao identified foom tee CCFZ. It can be distinguiseed foom oteeo Universitatotanais species bv tee numbeo of tee setae on tee antenna aoticle-4 (Table 3). It eas onlv one seta but also eas a oelativelv long uoopod peduncle (3.6 L: W), weice is oelativelv seoot (2.3 L: W) in U. lodzensis sp. nov. (see below). Universitatotanais gandavensis is tee onlv Universitatotanais species teat eas pleopods fullv developed in all known life-stages.
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 31-36, DOI: 10.1093/zoolinnean/zlae013, http://zenodo.org/record/14763728