Buprorides trilobatus, Kim & Boxshall, 2021

Kim, Il-Hoi & Boxshall, Geoff A., 2021, Copepods (Cyclopoida) associated with ascidian hosts: Ascidicolidae, Buproridae, Botryllophilidae, and Enteropsidae, with descriptions of 84 new species, Zootaxa 1, pp. 1-286 : 42-45

publication ID

https://doi.org/ 10.11646/zootaxa.4978.1.1

publication LSID

lsid:zoobank.org:pub:9C7C1723-73EB-4FBE-A47A-54627DEB8F93

DOI

https://doi.org/10.5281/zenodo.4822448

persistent identifier

https://treatment.plazi.org/id/3729879B-FFCC-FFDB-FA93-F9F4D5B3192B

treatment provided by

Plazi

scientific name

Buprorides trilobatus
status

gen. et sp. nov.

Buprorides trilobatus gen. et sp. nov.

( Figs. 22 View FIG , 23 View FIG )

Type material. Holotype ♀ (MNHN-IU-2018-1949, damaged, dissected and mounted on a slide) and Paratype ♀ (MNHN-IU-2018-1950, damaged, dissected and mounted on a slide) from unidentified Didemnidae ; Mont Jumeaux west, Norfolk Ridge, North of New Caledonia, CHALCAL 2 cruise, RV “Coriolis”, Stn DW 79, depth 243 m, Bouchet, Métivier & Richer de Forges-IRD coll., 30 October 1986 .

Etymology. The specific name refers to the trilobed maxilliped of the new species.

Description of female. Body form and size unknown due to damage to specimens. Cephalosome ( Fig. 22A View FIG ) depressed, subcircular, 126×148 μm, well-defined from trunk by deep constriction. Urosome ( Fig. 24B View FIG ) wider than long, constricted anteriorly; abdomen semicircular, unarmed, shorter than leg 5. Caudal rami absent.

Rostrum ( Fig. 22C View FIG ) strongly tapering, slightly wider than long, rounded apically, not demarcated from cephalosome. Antennule ( Fig. 22D View FIG ) 5-segmented; terminal segment longest; first segment much broader than distal segments, with transverse band of sclerotization, and armed with 2 setae; second to fifth segments armed with 6, 4, 3, and 11+aesthetasc, including insertion scars of setae on terminal segment; all setae naked. Antenna ( Fig. 22E View FIG ) 3-segmented, consisting of basis and 2 endopodal segments, strongly flexed between basis and first endopodal segment; armature formula 1, 4, and 6; basis 33×13 μm; first and second endopodal segments 21×11 and 15×9 μm, respectively: distalmost seta on first endopodal segment larger than proximal 3 setae, bluntly tipped and spinulose distally; all 6 setae on second endopodal segment naked and bluntly tipped.

Labrum ( Fig. 22F View FIG ) wider than long, narrowing distally, with setules laterally on distal margin and 2 rows of minute spinules: 1 row along concave medial part of distal margin and other row on subdistal medial region of ventral surface. Mandible ( Fig. 22G, H View FIG ) consisting of coxa and 1-segmented palp; coxa with well-developed gnathobase bearing on medial margin 2 bifurcate distal teeth, 1 spinulose tooth, and proximally 3 small bifurcate spinules and 1 setule; distal margin bearing 1 small setule; palp 2.6 times longer than wide (13×5 μm), armed distally with 3 setae of unequal lengths, longest about 2.5 times longer than segment. Maxillule ( Fig. 22I View FIG ) bilobed; inner lobe (precoxa) with 7 thick, spinulose spines on medial margin; outer lobe (palp) narrower than inner lobe, armed with 2 longer subdistal and 2 shorter distal setae. Maxilla ( Fig. 22J View FIG ) consisting of syncoxa and allobasis; syncoxa broad, with 1 large mediodistal endite tipped with massive, spinulose, globular proximal element and 1 broad, spinulose distal seta; allobasis with 3 outer subdistal and 2 distal, spinulose setae (proximal of 2 distal setae broad and spiniform). Maxilliped ( Fig. 22K View FIG ) plate-like, narrowing proximally, trilobed along distal margin, unarmed, but densely ornamented with spinules on distal surface.

Legs 1-4 ( Fig. 23 View FIG A-D) biramous with 2-segmented rami, and armed only with naked setae; coxa lacking inner seta; intercoxal sclerite not discernible. Basis of leg 1 lacking inner distal element. Armature formula for legs 1-4 as follows:

Coxa Basis Exopod Endopod

Leg 1 0-0 1-0 1-0; 2, 1, 3 0-1; 1, 2, 3

Legs 2 & 3 0-0 1-0 1-0; 3, 1, 4 0-1; 2, 1, 3

Leg 4 0-0 1-0 1-0; 2, 1, 4 0-1; 1, 2, 2

Leg 5 ( Fig. 22B View FIG ) expanded, lobate, extending beyond posterior margin of abdomen, armed with 5 naked setae on rounded apex. Leg 6 absent.

Male. Unknown.

Remarks. Unfortunately, the two specimens available in this study were damaged, both with a crushed metasome. Therefore the precise body form and size are unknowable, but all the cephalic appendages and the swimming legs remained virtually intact.

RV

Collection of Leptospira Strains

Kingdom

Animalia

Phylum

Arthropoda

Class

Maxillopoda

Order

Cyclopoida

Family

Buproridae

Genus

Buprorides

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