Angursa abyssalis Renaud-Mornant, 1981

N= 238 specimens occurrence: ANDEEP I, II, III, ANDEEP-SYSTCO; 1,088–5,213 m bsl.

Fig. 8A–D; Supplementary Table 1.5

Short description

Angursa with slender body (120–180 µm long, 20–35 µm width, n=5) and primary clavae longer than cirri A. Secondary and tertiary clavae are usually clearly visible (Fig. 8A, B, B 2). Distance between both secondary clavae on the dorsal side of the head is 1.5–4.0 μm (Fig. 8B, B 2). Cirrus E short (8.0–12.0 µm, n=5) (Fig. D). The hemispherical sensory organ with a small apical spine on leg IV is sometimes a bit elongated (as in Angursa capsula) (Fig. 8C).

Remarks

The two species A. abyssalis and A. capsula are quite similar in the shape of the sensory organ of leg IV (Hansen and Fujimoto 2019). However, the main identifying trait for this species is the short (less than 4 µm) distance between the secondary clavae and the shorter cirri E (Fig. 8D).