Sericosura bamberi ? Arango & Linse 2015
- Dataset
- First record and a new species of Sericosura Fry & Hedgpeth, 1969 (Arthropoda: Pycnogonida: Ammotheidae) from a hydrothermal vent of Southwestern Indian Ridge
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Pycnogonida
- order
- Pantopoda
- family
- Ammotheidae
- genus
- Sericosura
- species
- Sericosura bamberi
discussion
Remarks. It is difficult to determine species identity of juvenile stages in this genus (as in general in pycnogonids), especially as most of the species descriptions lack the description of the juvenile. However, the characters of this specimen agreed mostly with those of S. bamberi. Apart from the weak chelae with smooth fingers and not fully developed ovigers, the juvenile is tentatively assigned to S. bamberi based on the sevensegmented palps, bent bulky proboscis, funnel-shaped cephalon and an overall setose appearance (Arango and Linse 2015) (Fig. 2). The morphological differences between the juvenile and the type specimen of S. bamberi were the height of ocular tubercle and length ratio of palp articles (Fig. 2 - C, E, F). The ocular tubercle was not visible from dorsal view, and is lower than that of the type specimen. The length ratio of seventh palp article and fifth is nearly 3 / 5.
distribution
Distribution. The type material for this species was collected from hydrothermal vents in the East Scotia Ridge, Southern Ocean, at 1399 – 1462 m depth. This locality is thousands of kilometers away from the location where this juvenile specimen was obtained.
materials_examined
Sericosura bamberi. Arango and Linse, 2015, pp. 39 – 42, Figs. 2 – 3. Material examined: juvenile (34 IV-TVG 0801), Station 34 IV-SWIR-S 035 - TVG 08, SWIR, 37.66 ° S 50.47 ° E, TV- Grab, 1732 m depth, 13 Apr 2015.