Aegophila cappa Williams & Boyko 2021, n. sp.

• Main Authors: Williams, Jason D., Boyko, Christopher B.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Isopoda; Dajidae; Aegophila; Aegophila cappa; Bering Sea; Bowers; Bowers Bank
• Online Access: https://zenodo.org/record/4555505; https://doi.org/10.5281/zenodo.4555505

Aegophila cappa n. sp. (Figs 1; 2) urn:lsid:zoobank.org:act: 4FF870BA-A6D1-4A86-87AE-84160A0EA65F “parasite” – Richardson 1909: 125, figs 49, 50. “eine Form ohne Namen auf dem Isopode Aega symmetrica vom Behring-Meer” – Nierstrasz & Brender à Brandis 1931: 220. “ Aegophila socialis sp. nov.?” – Bresciani 1966: 108-109, fig. 6 (after Richardson 1909) (not A. socialis Bresciani, 1966). TYPE MATERIAL. — Holotype. Bering Sea • USNM 39524; ovigerous female (3.4 mm W, 2.4 mm L); attached to pereopod of Aegiochus symmetricus (Richardson, 1905) (USNM 39293); Sta. 4772; 54°30’30”N, 179°14’E; “Bowers Bank”; 344-372 fathoms (= 629- 680 m); coll. United States Bureau of Fisheries steamer Albatross, taken by 12-foot Tanner beam trawl (Anonymous 1907); 4.VI.1906. Allotype. Bering Sea • USNM 1616634; mature male (920 µm L); same data as for holotype. TYPE LOCALITY. — 54°30’30”N, 179°14’E, “Bowers Bank”, Bering Sea, 629- 680 m. TYPE HOST. — Aegiochus symmetrica (Richardson, 1905) [Crustacea: Isopoda: Aegidae] (originally as Aega symmetrica in Richardson, 1909; see WoRMS 2008b onwards). ETYMOLOGY. — The species name is derived from the Latin for cloak or cape (cappa), in reference to the fused oostegite 5 and lateral body wall of the female’s resemblance to a cloak drawn around the body. The gender is feminine. DISTRIBUTION. — Known only from the type locality and type host. DESCRIPTION Female Body (Fig. 1A, B) semicircular, approximately 1.25 times as wide as maximum length, dorsoventrally flattened, with pair of broad lateral lamellae filled with numerous embryos; lateral lamellae not reaching beyond frontal margin of cephalon. Cephalon (Fig. 1 A-C) indistinctly dorsally separated from pleon, without eyes. Antennules and antennae apparently absent. Oral cone (Fig. 1B, D) with flaring rounded mandibles, extended, distal surface covered with scale-like structures; posterior margin of oral cone with two finger-like projections. Maxillipeds subquadrate (Fig. 1E). Pereon with few faint transverse and longitudinal folds in ...