| Abstrakt: |
Due to the extreme scarcity of specimens, little is known about the biodiversity and biogeography of the barnacles of the genusWaikalasmaBuckeridge, 1983 (Thoracica: Waikalasmatidae Ross and Newman, 2001), which inhabit the deep sea of the Southwest Pacific. Previous studies reported only a single living species,W. bouchetiBuckeridge, 1996, from Vanuatu. In the present study, the collections by French deep-sea expeditions off New Caledonia (NORFOLK 1 & 2, EBISCO, SMIB 2, SMIB 4, SMIB 8, BIOCAL, MUSORSTOM 6, MUSORSTOM 4, MUSORSTOM 5, BATHUS 2), the Solomon Islands (SALOMON 1), Vanuatu (BOA1) and Papua New Guinea (BIOPAPUA) yielded specimens ofWaikalasmaspecies from 500 to 800 m depth. From molecular (DNA barcode region cytochrome c oxidase subunit I (COI) and 12S gene) and morphological analysis, a new speciesWaikalasma dianajonesaesp. nov., andW. bouchetiwere identified. From molecular phylogenetic analysis, sequence divergence in the DNA barcode region betweenW. dianajonesaesp nov. andW. bouchetireached > 10%.Waikalasma dianajonesaesp. nov. differs fromW. bouchetiin the number and size of imbricating plates on the shell and the shape of the tergum.Waikalasma dianajonesaesp. nov. andW. bouchetiexhibit sympatric biogeographical distributions in the Southwest Pacific.Waikalasma dianajonesaewas found in the waters of Papua New Guinea and Solomon Island, whilstW. bouchetiwas collected from Papua New Guinea, Vanuatu and New Caledonia waters. http://zoobank.org/urn:lsid:zoobank.org:pub:713013C7-677A-478F-B5DF-FD4690A7C6A9 [ABSTRACT FROM AUTHOR] |
