Cyclaspis variosculpta, Corbera, 2008

Corbera, Jordi, 2008, Deep-sea Bodotriidae (Crustacea: Cumacea) from New Caledonia, Fiji and Indonesia, Zoological Journal of the Linnean Society 152 (2), pp. 227-254 : 228-230

publication ID

https://doi.org/ 10.1111/j.1096-3642.2007.00371.x

DOI

https://doi.org/10.5281/zenodo.10546285

persistent identifier

https://treatment.plazi.org/id/553A7925-FF9A-F10F-9917-FB29FD1AFAF2

treatment provided by

Felipe

scientific name

Cyclaspis variosculpta
status

sp. nov.

CYCLASPIS VARIOSCULPTA View in CoL SP. NOV. ( FIGS 1 View Figure 1 , 2 View Figure 2 )

Type material: Holotype: preadult male dissected in two slides, New Caledonia, BIOCAL, stn CP75, 22°18.65′S, 163°23.30′E, 825 m, 4.ix.1985 (MNHN- Cu1072) GoogleMaps . Paratypes: same station than holotype, 1 adult female, 1 preadult female, 1 juvenile (MNHN- Cu1073).

Diagnosis: Carapace globose with a transversal ridge, some tubercles on the dorsal half, and reticulate below the frontal lobe. Uropod peduncle half length of pleonite 6, with very small simple setae on outer margin. Endopod nearly twice as long as peduncle, with very small simple setae on inner margin; exopod as long as endopod with five simple setae on inner margin.

Description: Preadult male 6.4 mm total length. Carapace ( Fig. 1A View Figure 1 ) slightly shorter than one-third of total length, globose, with a transversal ridge on the dorsal half; this ridge crosses the dorsal line in the middle of carapace and slopes slightly forward on each side; with tubercles dorsally in front of and behind the ridge; hardly reticulate below the frontal lobe. Eyelobe small and triangular, not reaching the tip of pseudorostrum.

Antennule ( Fig. 1B View Figure 1 ), peduncle article 1 shorter than articles 2 and 3 combined length; article 3 longer than article 2; main flagellum 2-articulate, with two aesthetascs and a long, simple seta, accessory flagellum rudimentary. Left mandible ( Fig. 1C View Figure 1 ) with three teeth on the pars incisiva, 13 setae between pars incisiva and pars molaris. Maxillule ( Fig. 1D View Figure 1 ) palp with two unequal filaments, inner endite with four setae, three simple and one trifid. Maxilla ( Fig. 1E View Figure 1 ), endites exceeding the protopod, with simple setae.

Maxilliped 1 ( Fig. 1F View Figure 1 ), basis with six setae on inner margin, distally produced reaching carpus, with a long plumose seta on the prejection; carpus with six bi-dentate flattened setae on the inner margin and a long plumose seta on distal outer corner. Maxilliped 2 ( Fig. 1G View Figure 1 ) basis longer than rest of appendage, with a plumose seta on inner distal corner; carpus longer than merus, with five plumose setae on inner margin and a long plumose seta on distal outer corner; propodus with two long plumose setae on outer margin and three simple setae on the inner. Maxilliped 3 ( Fig. 2A View Figure 2 ), basis expanded distally over mero-carpal articulation, with plumose setae on inner margin of projection; ischium with a plumose seta on inner margin; merus produced distally reaching the carpopropodial articulation with a plumose seta on its tip. Pereopod 1 ( Fig. 2B View Figure 2 ), basis shorter than rest of appendage; ischium and merus of similar length; carpus shorter than propodus; dactylus shorter than carpus. Pereopod 2 ( Fig. 2C View Figure 2 ), basis slightly longer than rest of appendage; ischium short, with a plumose seta; merus twice as long as ischium, with a plumose seta distally; carpus of similar length as merus, with two setae on distal corner; dactylus twice as long as propodus. Pereopod 3 ( Fig. 2D View Figure 2 ), basis slightly longer than rest of appendage, with simple seta on distal margin; ischium half length of merus; merus shorter than carpus; carpus and propodus with three and one long setae on distal corner, respectively. Pereopods 4 and 5 ( Fig. 2E, F View Figure 2 ), basis shorter than rest of appendage; merus shorter than carpus; carpus and propodus with two and one long simple seta on distal corner, respectively.

Uropod peduncle half length of pleonite 6 ( Fig. 2G View Figure 2 ), with four small simple setae on outer margin. Endopod twice as long as peduncle, sharply pointed. Exopod slightly shorter than endopod, with five simple setae on inner margin.

Etymology: From the Latin varius meaning diverse, referring to the different kinds of carapace ornamentation including ridges, tubercles and reticulation.

Remarks: Other two Cyclaspis species have a transverse ridge crossing the carapace at least dorsally, C. cingulata Calman, 1907 and C. adiastolos Corbera, Tirado & Martin, 2005 ; however, neither has the reticulated area below of the frontal lobe.

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Cumacea

Family

Bodotriidae

Genus

Cyclaspis

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF