Apocuma, JONES, 1973

Haye, Pilar A., 2007, Systematics of the genera of Bodotriidae (Crustacea: Cumacea), Zoological Journal of the Linnean Society 151 (1), pp. 1-58: 23

publication ID

http://doi.org/ 10.1111/j.1096-3642.2007.00322.x

persistent identifier

http://treatment.plazi.org/id/95193848-FFCD-FFF5-FEC1-FB15E02F1672

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Felipe

scientific name

Apocuma
status

 

APOCUMA JONES, 1973  

Type species: Apocuma brasiliense Jones, 1973  

Body: Carapace shorter than abdomen and longer than peraeon; abdomen shorter, equal or longer than carapace and peraeon together.

Cephalothorax: From dorsal view the carapace appears not to be laterally compressed. Carapace may have mid-dorsal, dorso-lateral, lateral and posterior transverse ridges, as well as mid-dorsal serration. Pseudorostral lappets extend beyond frontal lobe and meet in midline. Antennal notch as a depression, subacute or acute incision. Anterolateral corner bluntly rounded or with subacute tooth. Branchial siphons long, extending much beyond pseudorostrum or short, extending just beyond carapace. Frontal lobe 1/4 of carapace length; as wide as long; somewhat extended or anteriorly linguiform; without ocular pigment or eye lenses.

Antenna 1 with basal article of the peduncle arcuate or geniculated; longer than the other two articles together. Main flagellum bi-articulated; with two aes- thetascs in distal-most article. Accessory flagellum uni-articulated, may have a brush of three or more setae. Antenna 2 in males reaching end of pleon. Antenna 2 in females with three articles.

Maxilliped 3 basis arcuate or straight; not projected over ischium. Ischium shorter or same length than merus. Merus slightly expanded laterally. Carpus variable in length with respect to propodus and dactylus together.

Peraeon: Peraeonite 2 with ventrolateral expansion overriding peraeonite 1 and/or carapace and peraeonite 3, or only peraeopod 3. Peraeonite 3 may have ventrolateral expansion extended backwards overlapping peraeonite 4. Peraeonite 4 with ventrolateral expansion overriding peraeonite 5 or peraeonites 3 and 5.

Females with fully developed exopods on peraeopods 1 and 2, and reduced or small exopod on peraeopod 3. Males with fully developed exopods on peraeopods 1– 4. Peraeopod 1 with basis arcuate; carpus with or without row of setae, longer than propodus; dactylus with or without terminal setae. Peraeopod 2 with ischium; dactylus longer than propodus. Peraeopod 4 with ischium.

Pleon: Pleonite 6 as long as or longer than wide, shorter than peduncle of uropod, may have three setae on posterior edge. Wide portion of distal end of pleonite 6 slightly extended between the bases of the uropods and ending in a line or slight point. Anal plates may extend posteriorly beyond distal margin of pleonite six.

Uropod endopod uni-articulated. Uropod exopod with proximal article shorter than distal one. Peduncle of uropods longer than rami; rami approximately same length or endopod slightly shorter. Males with five pairs of pleopods that do not bear a process.

Species included:

1. A. australiense ( Hale, 1949)   (Synonymy: Cumellopsis australiensis Hale, 1949   ; A. australiense Petrescu, 2004   )

2. A. brasiliense Jones, 1973  

3. A. mauritaniense Ledoyer, 1997  

4. A. poorei Petrescu, 2004  

Distribution: Atlantic Ocean (587–2003 m) and New South Wales, Victoria and Tasmania (119–1500 m).