Echiodon atopus Anderson, 2005, new species

• Main Author: M. Eric Anderson
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2005
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Ophidiiformes; Carapidae; Echiodon; Echiodon atopus; Inaccessible Island
• Online Access: https://doi.org/10.5281/zenodo.6265015

Echiodon atopus, new species (Figs. 1-2) Holotype: USNM 380406 (male, 176 mm TL), north of Inaccessible Island; RVIB NATHANIEL B. PALMER sta. 91/OT 60; 37° 16.1'S, 12° 42.2'W to 37° 16.6'S, 12° 43.1'W; 10 m otter trawl; 0- 139 m; 19:49- 20:06 hr; 9 July 2004. Diagnosis. A species of Echiodon as defined by Markle and Olney (1990), with the following combination of characters: PCV 38; D30 46; A30 46; ARDO 7; P1 18; posterior swim bladder tunic ridges ventral. Description. Meristics: PCV 38; D30 46; A30 46; P1 18; ARDO 7; DRAO 0; MAO 7; MDO 8; VAO 6; VDO 8; VPB 6; IO 8; SO 5; LT 3; MD 5; POP 2; ST 2; branchiostegal rays 7. Proportions as percent HL: body depth 48.8; bony interorbital width 13.7; eye diameter 20.3; head depth 48.8; head width 34.3; lower jaw length 52.0; upper-jaw length 46.4; prepectoral length 96.4; preanal length 118.1; predorsal length 129.3; pectoral-fin length 65.2; snout length 17.0; distance snout to anus 111.8. Head elongate-ovoid; eye circular, entering dorsal profile of head when viewed laterally. Cephalic pores small, rounded, difficult to observe, pored lateral line mediolateral, extending posteriorly to anterior quarter of tail; pores becoming more widely spaced posteriad. No sensory papillae on head or along seismosensory canals. First gill arch with three elongate, tooth pads on upper limb, three slender, developed rakers and four rounded, toothed pads on lower limb. Posterior portion of maxilla unsheathed. Dorsal portion of gill opening extending forward about 3/4 eye diameter. Branchiostegal membrane free of isthmus, joined on vertical about 1 1/2 eye diameters posterior to rear margin of eye. Single enlarged caniniform tooth near symphysis in premaxilla, dentary with two. Vomer with three smaller canines in a row surrounded by 25 tiny denticles. Palatine teeth in four irregular rows anteriorly blending into single, posterior row. Outer flap of upper lip at symphysis with single, furcate, ventrally-directed lobe fused to a broad, inner flange with a larger, conical lobe on either ...