Altiverruca navicula (Hoek, 1913)

Pitriana, Pipit, Jones, Diana S., Corbari, Laure & Rintelen, Kristina von, 2020, New insights gained from museum collections: Deep-sea barnacles (Crustacea, Cirripedia, Thoracica) in the Museum National d'Histoire Naturelle, Paris, collected during the Karubar expedition in 1991, Zoosystematics and Evolution 96 (2), pp. 649-698 : 649

Altiverruca navicula (Hoek, 1913) Figure 30

Verruca navicula Hoek, 1913: 134, figs 4-6. - Nilsson-Cantell 1927: 778, figs a-f.

Altiverruca navicula . - Buckeridge 1994: 100, fig. 5. - Chan et al. 2009b: 280, figs 245-247. - Chan et al. 2010: 29, figs 2E, 21, 22.

Material examined.

- Tanimbar Island: 3 specimens, MNHN-IU-2019-4941, Stn. CP 91, 08°44'S, 131°05'E, 884-891 m depth, 5 November 1991, attached to peduncle of Alcockianum persona (Annandale, 1916).

Diagnosis.

Shell not depressed; carina and rostrum interlocking with single rib from each plate; movable plates large, scutum with four articular ribs, tergum with six articular ribs, growth lines very distinct; caudal appendages long.

Description.

Shell yellowish. Movable scutum elongately triangular, apex distinctly beaked, projecting freely; surface with numerous articular ridges. Movable tergum large, quadrangular; surface with strongly developed, curved axial articular ridge. Carina and rostrum irregular quadrangular, with carina higher, rostrum broader. Fixed tergum with two parts: (1) triangular portion very narrow at apex, slightly broader in its inferior (2) flat and broad part at a rear portion of shell. Fixed scutum pointed with distinctly beaked apex; composed of broader, nearly flat, triangular portion and narrower inflected portion, only widening towards its inferior. Base of shell elongatedly oval-shaped. Cirrus I with rami very unequal (anterior ramus: 12-segmented, posterior ramus: 28-segmented); cirrus VI with caudal appendages. Maxilla bilobed, fringed with setae, except on the notch; maxillule widely notched, horizontally elongated, two large spines above notch, numerous dense setae at notch; mandible with three teeth excluding inferior angle; labrum slightly concave, conical teeth on cutting margin.

Distribution.

Pacific Ocean ( Chan et al. 2010). In this study, Altiverruca navicula was found at Tanimbar Island, Indonesia.

Type locality.

(1) 9°3.4'S, 119°56.7'E; depth 959 m; bottom: globigerina ooze. (2) 3°37.7'S, 131°26.4'E; depth 924 m; bottom: fine grey mud ( Hoek 1913).

Figures

Figure 30. Altiverruca navicula (Hoek, 1913) (MNHN-IU- 2019 - 4941). a. left lateral view; b. right lateral view; c. upper lateral view; d. lower lateral view. Scale bar: 7 mm (a-d).