Asteroschema

Baker, Alan N., Okanishi, Masanori & Pawson, David L., 2018, Euryalid brittle stars from the International Indian Ocean Expedition 1963 - 64 (Echinodermata: Ophiuroidea: Euryalida), Zootaxa 4392 (1), pp. 1-27: 2

publication ID

https://doi.org/10.11646/zootaxa.4392.1.1

publication LSID

lsid:zoobank.org:pub:B6A80A66-E868-4578-A5E5-655E0F18AA84

persistent identifier

http://treatment.plazi.org/id/03D88782-FFDD-FFA9-7896-FAFA661BF8B1

treatment provided by

Plazi

scientific name

Asteroschema
status

 

Asteroschema  cf arenosum Lyman, 1878 

( Fig. 1A –DView FIGURE 1)

Asteroschema arenosum Lyman, 1878: 235  , pl. 3 figs. 62–64; Barboza et al., 2010: 242; Frensel et al., 2010: 175.

Material Examined. USNM 1072539View Materials, Pioneer Cruise 17, south of Lombok , eastern Indian Ocean, 10° 50’S, 117° 50’E, 1000 m, 17 March 1964, 3 specimens.GoogleMaps 

Remarks. These specimens were identified as A. arenosum  on the basis of the disc and upper arm covering of flat polygonal plate-shaped external ossicles ( Fig. 1CView FIGURE 1), the lateral arm cover of fine rounded granule-shaped external ossicles ( Fig. 1DView FIGURE 1), and the presence initially of one, then two, arm spines. One complete specimen had a disc diameter of 11 mm and arms 180 mm long ( Fig. 1A –BView FIGURE 1).

The type specimen of A. arenosum  was collected in the Gulf of Mexico and its occurrence in the Indo-Pacific region is thus a very large extension of its range. Given that this species has been recorded from a depth of 1449 m in the western Atlantic ( Pawson et al. 2009), it is likely to be a distinct taxon. However, we here refrain from describing another species here since we examined only 3 specimens. Future morphological observations and molecular analyses based on more specimens are required. 

Kingdom

Animalia

Phylum

Echinodermata

Class

Ophiuroidea

Order

Euryalida

Family

Euryalidae

Loc

Asteroschema

Baker, Alan N., Okanishi, Masanori & Pawson, David L. 2018
2018
Loc

Asteroschema arenosum

Lyman, 1878 : 235