Astroboa nigrofurcata Döderlein, 1927

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: 9

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-FFD4-FFA0-7896-FBBA67FFF92D

treatment provided by

Plazi

scientific name

Astroboa nigrofurcata Döderlein, 1927
status

 

Astroboa nigrofurcata Döderlein, 1927 

( Figs. 6A –EView FIGURE 6, 7DView FIGURE 7)

Astroboa nigrofurcata Döderlein, 1927: 45  , pl. 4 figs. 1–4; Baker, 1980: 60, figs. 23, 28, 30.

Material Examined. USNM 1072537View Materials, Anton Bruun Cruise 1 Station 18A, southern Andaman Sea, 7°34’N, 98° 00’E, 77 m, 21 March 1963, 2 specimens ( Fig. 6A –EView FIGURE 6)GoogleMaps  ; USNM 1234012View Materials, Anton Bruun Cruise 9 Station 465, off NE Somalia, 11° 37’N, 51° 27’E, 67–72 m, 18 December 1964, 2 specimensGoogleMaps  .

Remarks. The specimens range between 17 and 40 mm ( Fig. 6A –BView FIGURE 6) disc diameter. The smallest specimen has a disc cover of dense low granules, 8 in 1 mm on the radial shields ( Fig. 6CView FIGURE 6). One unusual feature of this specimen, possibly related to its small size, is the presence of 2–4 transverse rows of taller granules bridging the pairs of radial shields. In the largest specimen, the arms bifurcate at least 25 times, and are covered with smooth polygonal plates, with prominent girdle bands continuing over the arm—a characteristic of this species ( Figs. 6D –EView FIGURE 6, 7DView FIGURE 7). The colour pattern of this species is distinctive—disc pale green, with contrasting irregular brown or pink freckles; arms with a continuous series of dark freckles, one per segment.

This record, in the southern Andaman Sea, is an extension of the known range from the Western Australian coast, Indonesia and the Philippines ( Baker 1980).

Kingdom

Animalia

Phylum

Echinodermata

Class

Ophiuroidea

Order

Euryalida

Family

Gorgonocephalidae

Genus

Astroboa

Loc

Astroboa nigrofurcata Döderlein, 1927

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

Astroboa nigrofurcata Döderlein, 1927 : 45

Döderlein, 1927 : 45
Baker, 1980 : 60