Comanthus wahlbergii ( Müller, 1843 )

Mohammednowshad, B., Idreesbabu, K. K., Parameswaran, Usha V., Messing, Charles G. & Sureshkumar, S., 2020, The Shallow-water Crinoid Fauna of Lakshadweep Atolls, North-western Indian Ocean, Zootaxa 4789 (1), pp. 247-265 : 251-252

publication ID

https://doi.org/ 10.11646/zootaxa.4789.1.9

publication LSID

lsid:zoobank.org:pub:376263E2-07B2-4B4B-A8E3-C718FE0FC969

persistent identifier

https://treatment.plazi.org/id/03C887FD-FFC3-FFED-F2A9-5A8AD82AFBB3

treatment provided by

Plazi

scientific name

Comanthus wahlbergii ( Müller, 1843 )
status

 

Comanthus wahlbergii ( Müller, 1843)

Alecto wahlbergii Müller, 1843:131 .

Actinometra wahlbergii: Dujardin & Hupé, 1862:211 .

Comanthus samoana: A.H. Clark, 1911b:181 (part); 1913a:17 (part).

Comanthus wahlbergii: A.H. Clark, 1912:95 ; 1913a:16; 1931:531, 588–593, pl. 65 (fig. 183). Rowe et al. 1986:204, 225 (fig. 6D–H), 228–32; Summers et al., 2017:182 (fig. 15D), 183 (fig. 16).

Comanthus samoanus: A.M. Clark & Rowe, 1971:6 , 16 (part).

Material examined.— Eastern outer reef of Agatti I., 10.860N & 72.202E, 17 m, 11 Nov 2018, Mohammed Nowshad, coll. (1, MTRLDST E0231).

Diagnosis.— A species of Comanthus with 10–38 arms to ~ 110 mm long; anterior arms usually longer than posterior arms; cirri XIII-XL, 12–18 cirrals; radials mostly hidden by well-developed, discoidal centrodorsal; IIBr and following division series usually 4(3+4), sometimes 2; proximal pinnules decreasing in length from P1 to P3. PD comb of 5–13 teeth; bases of adjacent teeth usually in contact; smaller secondary teeth present or absent; distal pinnule segments smooth or with abambulacral spines (A.H. Clark, 1931; Rowe et al., 1986).

Habitat.— The specimen was found in a crevice.

Description of survey specimen ( Figure 2G View FIGURE 2 ).— Arms 26, to 90 mm long; centrodorsal a thin, circular disc, 2.5 mm across, with aboral surface flat or slightly concave. Cirri well developed, XII, 10 mm long, with 11 segments. First cirral very short; those following gradually increasing in length, so that c5 or c6 is twice as long as its proximal width; those succeeding decreasing in length; c8 or c9 with L:W 1.0 or slightly less. C5, c6, or c7 (usually c6) a wellmarked transition segment; middle and following cirrals with aboral edge slightly everted, becoming a transverse ridge on distal few segments; opposing spine blunt and forked. Radials concealed, but IBr series visible. IIBr series all 4(3+4). Proximal pinnules decreasing in length from P1 to P3. Color: rays orange with dark brown articulations and pinnules; cirri brown, becoming paler distally, with white tips; centrodorsal dark brown with most of the aboral pole white.

Distribution.— From South Africa in the west to Samoa in the east, including Lakshadweep, ANI, Indonesia, Philippines, Papua New Guinea, northern Australia (Garden Island, WA, to Mooloolaba, QLD), Lord Howe Island, New Zealand, Admiralty Islands, New Caledonia, Guam and southern Japan ( Rowe et al.1986; Rowe & Gates, 1985; Messing 1998a; Kogo 1998). Depth range: shoreline to 103 m (A.H. Clark, 1931; A.M. Clark, 1972; Rowe, et al., 1986).

Remarks.— This is the first record of this species from Lakshadweep waters. A.M. Clark (1972) distinguished two subspecies from its western range: C. w. tenuibrachia A.M. Clark, 1972, from Madagascar, and C. w. serrata ( Gislén, 1938) from South Africa.

Kingdom

Animalia

Phylum

Echinodermata

Class

Crinoidea

Order

Comatulida

Family

Comasteridae

Genus

Comanthus

Loc

Comanthus wahlbergii ( Müller, 1843 )

Mohammednowshad, B., Idreesbabu, K. K., Parameswaran, Usha V., Messing, Charles G. & Sureshkumar, S. 2020
2020
Loc

Comanthus samoanus: A.M. Clark & Rowe, 1971:6

A. M. Clark & Rowe 1971: 6
1971
Loc

Comanthus wahlbergii: A.H. Clark, 1912:95

: A. H. Clark 1912: 95
1912
Loc

Comanthus samoana: A.H. Clark, 1911b:181

A. H. Clark 1911: 181
1911
Loc

Actinometra wahlbergii: Dujardin & Hupé, 1862:211

Dujardin & Hupe 1862: 211
1862
Loc

Alecto wahlbergii Müller, 1843:131

Muller 1843: 131
1843
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