Socotradelphys unipedata, Kim & Boxshall, 2020

Kim, Il-Hoi & Boxshall, Geoff A., 2020, Untold diversity: the astonishing species richness of the Notodelphyidae (Copepoda: Cyclopoida), a family of symbiotic copepods associated with ascidians (Tunicata), Megataxa 4 (1), pp. 1-6 : 653

publication ID

https://doi.org/ 10.11646/megataxa.4.1.1

DOI

https://doi.org/10.5281/zenodo.5699977

persistent identifier

https://treatment.plazi.org/id/03C487CB-EDDD-38B9-FF4D-F9D1FBE5FC72

treatment provided by

Plazi

scientific name

Socotradelphys unipedata
status

gen. et sp. nov.

Socotradelphys unipedata gen. et sp. nov.

( Fig. 443 View FIGURE 443 )

Typematerial. Holotype (intact ♀, MNHN-IU-2009- 5058 ) , paratype (intact ♀, MNHN-IU-2014-21468), anddissectedparatype (♀, figured) from Didemnum sp. (MNHN-IT-2008-3381 = MNHNA 2/DID.C/581), Socotra Island, Yemen, Monniot coll., September 1996.

Etymology. The specific name refers to the presence of only a single pair of legs in the new species.

Descriptionoffemale. Body ( Fig. 443A View FIGURE 443 ) maggotshaped, graduallybroadeningposteriorly, consistingof unsegmented prosome and small, rudimentary urosome, with thin, soft epidermis. Bodylength 2.12 mm; body width 0.65 mm across widest region in posterior 20% of body. Body surface ornamented with sparsely scattered, fine spinules. Cephalosome ( Fig. 443B View FIGURE 443 ) with pair of swollen, lateral processes; processes bulbous, gradually broadening distally, directed ventro-medially, extending to level of tip of labrum. Urosome ( Fig. 443C View FIGURE 443 ) indistinctly 2-segmented, positionedondorsal surfaceof prosome near posterior end; first somite obscure, fused with prosome; second wider than long (77×94 μm), bilobed posteriorly, with deep posteromedian incision in rear margin; ornamented with scattered spinules. Caudal rami small, lobate, 19×14 μm, indistinctly articulated from abdomen, unarmed but ornamented with several spinules.

Rostrum and antennules absent. Antenna ( Fig. 443D View FIGURE 443 ) extremely small, 2-segmented, positioned between base of labrum and ventrolateral lateral processes ( Fig. 443B View FIGURE 443 ); secondsegment subdivided by lateral constriction, tipped withsmall claw. Labrum ( Fig. 443B View FIGURE 443 ) large, longerthan wide, tapering towards rounded apex. Mouth visible beneath labrum ( Fig. 443B View FIGURE 443 ). Mouthparts absent. Leg 1 represented by paired globular lobes positioned close to each other on mid-ventral surface, posterior to apex of labrum ( Fig. 443B View FIGURE 443 ). Legs 2–5 absent.

Male. Unknown.

MNHNA

Museum National d'Histoire Naturelle

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