Corresponding author: Benny K.K. Chan (
Academic editor: Niel Bruce
The present study has identified a new species from the previously monotypic genus
The coral-inhabiting barnacles of the genus
In the present study, we collected a large number of
Sampling of
Collection sites of coral-inhabiting barnacle
Total genomic DNA was extracted from soft tissue of 110
The genealogical relationships of specimens based on 12S and COI were inferred using K2P model and 1000-replicate Neighbor-Joining (NJ) method implemented in MEGA v5.05 (
HOLOTYPE. NMNS-6878-001, Lobster Cave, Siaoliouciou Island, Taiwan (
Scutum triangular, rostral tooth and obvious adductor plate present, basal margin of adductor plate forming obvious angle. Tergum trapezoid, spur triangular, medial furrow curved.
(Type specimen: 6 mm in basal diameter, rostro-carinal diameter to 5.2 mm). Shell plates fully fused, purple, oval, externally surface with about 24 strip-like projections radiating from subcentral orifice to shell plate margin (
Hard parts of
Scutum and tergum white, fused without junctions (consistent through 3 specimens,
Tergum trapezoid, lateral depressor muscle crests present. Spur triangular, blunt, curved, height reaching more than 1/2 height of tergum, basal margin not obvious due to curved spur. Dorsal surface with medial furrow, curving from basal margin towards the carinal margin (
Maxilla bilobed (
Oral cone of
Oral cone of
Oral cone of
Cirrus I with rami unequal, anterior ramus long, slender, 14-segmented, posterior ramus 6-segmented (
Line drawing of
Cirri of
Cirri of
Cirri and penis of
Penis long (1.9 times length of Cirrus VI), annulated, some dark spots present, scattered short simple setae (
At present only recorded from Taiwan.
The name
External shell morphology and arthropodal characters of
CEL-RYU-28-1, Dafu Fishing Harbor, Siaoliouciou Island, Taiwan (
Scutum subtriangular, rostral tooth and obvious adductor plate present. Adductor plate angle not obvious. Tergum subtriangular, lateral depressor muscle crests, medial furrow and spur present. Spur triangular, long, curved and sharp.
Shell (8 mm in maximum basal diameter, rostro-carinal diameter to 6 mm) plates fully fused, purple, oval, externally surface with about 25 strip-like projections differing in length and radiating from nearly subcentral orifice to plate margin (
Hard parts of
Scutum and tergum white, fused without any junctions (
Tergum subtriangular, lateral depressor muscle crests present. Spur triangular, long, curved and sharp, height reaching more than 1/2 height of tergum, basal margin not obvious due to the curved spur. Dorsal surface with medial furrow, curving from basal margin towards the carinal margin of tergum, width of furrow increased gradually from apex to base (
Maxilla oval (
Oral cone of
Oral cone of
Oral cone of
Cirrus I with rami unequal, anterior ramus long and slender, with 17-segmented, posterior ramus 7-segmented (
Line drawing of
Cirri of
Cirri of
Cirri and penis of
Penis long (1.2 times length of Cirrus VI), annulated, some dark spots present, scattered short simple type setae (
South China Sea: Singapore, Mainland China (Hong Kong), Vietnam (Nhatrang Bay).Pacific Ocean: Taiwan (Green Island, Turtle Island, Siaoliouciou Island, Kenting, Suao), Japan, Australia (Western Australia & Great Barrier Reef),Philippine.Indian Ocean: Mauritius (Albion), Bay of Bengal, Thailand (Gulf of Siam), Sri Lanka,Red Sea.
After trimming and aligning the sequences, 472bp of 12S rDNA and 642bp of COI were obtained from 107 and 92
Neighbor-Joining method inferred genealogical relationships of
In the present study, a new species is identified from the previously monotypic genus
Based on molecular analyses, the sequence distance of mitochondrial DNA markers 12S and COI within the two
Both
We would like to thank Pei-Chen Tsai, I-Han Chen, Huai-Chen Hsieh, Hsin-Ying Lee (Academia Sinica) for assisting field collections and DNA analysis; Dr. Ling Ming Tsang (The Chinese University of Hong Kong) and Dr. Chi Chiu Cheang (Academia Sinica) for designing primers for COI. The authors would like to thanks the two reviewers for giving constructive comments on the MS. Thanks to the Yilan, Pingtung, and Taitung County Government, and Kenting National Park of Taiwan R.O.C. for granting permits for collection of corals for research purposes. This project is supported from a grant in National Science Council , Taiwan (NSC-100-2321-B-001-020) and a thematic grant from Academia Sinica, Taiwan (AS-100-TP2-A02-SUB3).