Annandaleum japonicum (Hoek 1883)

Dataset
An illustrated catalogue of the scalpellid barnacles (Crustacea: Cirripedia: Scalpellidae) collected during the HMS “ Challenger ” expedition and deposited in the Natural History Museum, London: Rank
SPECIES

Classification

kingdom
Animalia: phylum
Arthropoda: class
Maxillopoda: order
Pedunculata: family
Scalpellidae: genus
Annandaleum: species
Annandaleum japonicum

description

Fig. 3

discussion

Remarks. The taxonomic status and morphological variability of A. japonicum and A. j. biramosum are in need of re-evaluation because of significant intraspecific variation in plate morphology, which seems to be dependent on body size. Changes during ontogenetic development include: the loss of the hairs on the external cuticle; the tergum becomes clearly bifurcate; the scutum develops two or three distinct branches; the shape of the carinal latus changes from quadrilateral to triangular or v-shaped, the rostral margin may show incipient branching; the shape of the upper latus changes from pentagonal to triangular, the carinal margin becomes branched; and the rostral latus carinal margin may be branched.

distribution

Distribution. Pacific, Northwest and Western Central; Indian Ocean, Eastern. Known depth range 794 to 6810 m. Habitat. Attached to rocks, gastropod shells, and gorgonian corals.

materials_examined

Material examined. Holotype NHM UK 2013.1066, Stn 235: Pacific, Northwest (Off Nagoya, South of Japan); 1017 m. Found attached to an opisthobranch gastropod shell. Supplementary descriptions. Zevina (1981 a) and Chan et al. (2009).

Name

Homonyms: Annandaleum japonicum (Hoek 1883)