Cobb, Janessa C.; Lawrence, John M.; Herrera, Joan C.; Lopez, Karen; Janies, Daniel
Astropecten mcedwardi Cobb & Lawrence & Herrera & Lopez & Janies 2019, n. sp.
A new species of Astropecten (Echinodermata: Asteroidea: Paxillosida: Astropectinidae) and a comparison of the Astropecten species from the Gulf of Mexico and the East Florida Shelf
Cobb & Lawrence & Herrera & Lopez & Janies, 2019
Cobb & Lawrence & Herrera & Lopez & Janies
FIGURE 5. Comparison of Astropecten spp. body shapes where R = 24.3–25.7 mm.A, A. mcedwardi FSBC I 117245, paratype (R:r 2.9, R:SM# 1.6). B, A. duplicatus FSBC I 70285 (R:r 3.4, R:SM# 1.6). C, A. articulatus FSBC I 125180 (R:r 3.5, R:SM# 1.0). D, A. antillensis ZMUC AST-4-23, syntype (R:r 4.4, R:SM# 1.2). E, A. marginatus USNM E18385 (R:r 3.5, R:SM# 0.9). F, A. karankawai FSBC I 134511 (R:r 3.8, R:SM# 1.5). Scale bar 1 cm.
FIGURE 6. Inferomarginal plates with fringe spines (left: distal, right: proximal). A, A. mcedwardi FSBC I 005769 (R = 17 mm). B, A. duplicatus FSBC I 070291 (R = 19). C, A. articulatus FSBC I 125180 (R = 24). D, A. antillensis ZMUC AST-4-22, syntype (R = 29). E, A. marginatus USNM E18385 (R = 22mm). F, A. karankawai USNM E22502, paratype (R = 21mm). Scale bar 0.5 cm.
FIGURE 8. Adambulacral plates and spines (left: proximal, right: distal) of Astropecten spp. A, A. mcedwardi FSBC I 005769 (R = 17 mm). B, A. duplicatus FSBC I 70291 (R = 19 mm). C, A. articulatus FSBC I 125180 (R = 24) with arrows identifying spines offset behind the proximal and slightly enlarged distal spines of the second row. D, A. antillensis ZMUC AST-4-22, syntype (R = 29 mm). E, A. marginatus USNM E18385 (R = 19 mm). F, A. karankawai USNM E22502, paratype (R = 21 mm). Scale bar 0.5 cm.
FIGURE 9. Spination of superomarginal plates along the arms of Astropecten spp. A, A. antillensis ZMUC AST-4-23, syntype (R = 25 mm). B, A. mcedwardi FSBC I 117245, paratype (R = 21 mm). C, A. duplicatus FSBC I 70283 (R = 26 mm). Scale bar 0.5 cm.
FIGURE 1. Astropecten mcedwardi n. sp. A–B, USNM 1551002, holotype (below, largest), USNM 1551004, paratype (upper left) and USNM 1551005, paratype (upper right).A, Abactinal surface. B, Actinal surfaces. C–D, USNM 1551005. Rugose paxillar spinelets (C) and the abactinal surface (D) showing the madreporite (arrow) and large spine on interradial superomarginal plate, paxillar area at the base of an arm, and one interradial superomarginal spine. E–F, USNM 1551002. Actinal surface of the inferomarginal plates (E) and the adambulacral plates (F). Scale bars: A–B, 1 cm; C, 0.2 mm; D, 0.5 mm; E–F, 1 mm.
FIGURE 2. Astropecten mcedwardi color variations. A, USNM 1551002, holotype (left, largest), USNM 1551004, paratype (upper right) and USNM 1551005, paratype (lower right). B, FSBC I 122364, paratype. C, FSBC I 131421, paratype. D, FSBC I 131433, paratype. E–G, FSBC I 131436, paratypes. Scale: 1 cm. Photographs: FWC Fisheries Independent Monitoring staff (A–B), Robert Lasley (C), and Janessa Cobb (D–G).