Diastylis andeepae Alberico & Mühlenhardt-Siegel, 2010, n. sp.

• Main Authors: Alberico, Natalia, Mühlenhardt-Siegel, Ute
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Cumacea; Diastylidae; Diastylis; Diastylis andeepae; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.6208582; http://treatment.plazi.org/id/03AE1C51FF86FFF9FF5EF9B4FDFDFA2D

Diastylis andeepae n. sp. (Figures 1−4) Material examined. R/V “Polarstern”. ANDEEP I (ANT XIX/3). West Weddell Sea, Sta. 46−7, 60º38.35´S, 53º57.36´W, 2893.6 m, 30 January 2002: 1 manca (ZMH K- 42178). ANDEEP III (ANT XXII/3). East Weddell Sea, Sta. 80−9, 70º39.07´S, 14º43.36´W, 3103 m, 23 February 2005: 1 preparatory ♀ (with an isopod on basis of pereopod 1) (holotype ZMH K −42179). Diagnosis. Carapace with small tubercles all over, inferior margin serrated; anterior part with an arched row of teeth on each side of the pseudorostrum, an oblique row of three teeth on each side of the frontal lobe fissures, and two middorsal rows of small teeth. Pereopod 2, ischium with four strong teeth. Pereopods 3 and 4 without rudimentary exopods. Telson with five cuspidate setae on each side. Uropod endopod of two articles. Description of the preparatory female (based on the holotype ZMH K −42179) Total length: approximately 11.75 mm. Carapace (Figures 1 A, B) approximately 1.3 times as long as wide, surface with small tubercles all over, inferior margin serrated; anterior part with: (1) an arched row of teeth, extending from each side of the pseudorostrum and disappearing a short distance before reaching the inferior margin of the carapace, (2) an oblique row of three teeth on each side of the frontal lobe fissures, and (3) two rows of small teeth in the middle of the frontal lobe, running posteriorly from ocular lobe and reaching approximately middle of the carapace. Ocular lobe approximately as long as wide, without lenses. Pseudorostrum approximately 4 times as long as the ocular lobe. Antennal notch shallow and smooth. Pereon (Figures 1 A, B) approximately 0.4 times as long as the carapace. Pereonites 1, 2, 3 subequal in length, pereonite 4 the longest, postero −lateral angles of the pereonite 5 rounded in dorsal view. Pereonites 2−5 with dorso −lateral teeth: pereonite 2 with four, pereonites 3 and 5 with two, and pereonite 4 with two rows of four. Pleon (Figure 1 A) approximately 0.8 times as long as the ...