Microspio moorei

• Main Authors: Fonseca-González, Idalyd, Londoño-Mesa, Mario H., Delgado-Blas, Víctor H.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Spionida; Spionidae; Microspio; Microspio moorei; Antarctic; Antarctic Peninsula; King George Island; South Shetland Islands; Fildes; Gravier; Antarc*
• Online Access: https://zenodo.org/record/6391233; https://doi.org/10.5281/zenodo.6391233

Microspio moorei (Gravier, 1911) Figures 2A–G; 3A–K Mesospio moorei Gravier, 1911a: 100–105, Plates VII, figs 80–83, VIII, 84–86.— Gravier, 1911b: 313.— Augener, 1932: 39–40.— Hartman, 1966: 17, Plate IV, figs 1–3.— Bellan, 1975: 789.— Blake, 1983: 241.— Sicinski et al. 2011: 35, Table 1: 37. Microspio moorei Foster, 1971: 35.— Maciolek, 1990: 1113–1115, Table 1. Microspio cf. moorei Petti et al. 2006: 166, Table 1.— Sicinski et al. 2011: 37. Microspio sp. Barbosa et al. 2010: 1158, Table 1. Material examined. All samples collected in Fildes Bay, King George Island, South Shetland Islands, Antarctic Peninsula; 62º12’31,32”S 58º57’45,86”W: UDEA: CEMUA: ANNE:001594 (8 specimens); 0.3 m depth, low tide. Coll. M. Londoño & I. Fonseca. Feb. 24, 2017. UDEA: CEMUA: ANNE:001595 (7); 0.3 m depth, low tide. Coll. M. Londoño & I. Fonseca. Feb. 24, 2017. UDEA: CEMUA: ANNE:001596 (2); 1.3 m depth low tide. Coll. M. Londoño & I. Fonseca. Feb. 26, 2017. UDEA: CEMUA: ANNE:001597 (9); 1.3 m depth low tide. Coll. M. Londoño & I. Fonseca. Feb. 24, 2017. UDEA: CEMUA: ANNE:001598 (3); 1.3 m depth low tide. Coll. M. Londoño & I. Fonseca. Feb. 24, 2017. Description. Complete specimens with 4.1–12.3 mm long and 0.5–1.5 mm wide with 36–62 segments. In life and in alcohol, prostomium, peristomium, caruncle, and dorsum of first five chaetigers dark, subsequent segments with diminishing pigmentation, palps dark (Fig. 2A, B), ventral surface of first five segments with dark pigmentation, subsequent segments with pigmentation decreasing gradually, concentrated along midline up to chaetiger 12 (Fig. 2C); in life, specimens pink with visible blood vessel running inside the branchiae (Fig. 2D); ventral epidermal glands absent. Prostomium broadly rounded and tapered anteriorly (Figs 2A, 3A), posteriorly narrow, tapered in a narrow caruncle reaching the base of chaetiger 2 (Fig. 3A), with slightly elevated keel near base of palps (Fig. 3A). Occipital tentacle absent. Two pairs of black eyespots arranged in trapezoid, anterior ...