Table 1 in Delimitation of Ophioderma teres (Lyman, 1860) and Ophioderma unicolor H. L. Clark, 1940 stat. nov. (Echinodermata: Ophiuroidea), including the description of two new species

Table 1. Main external and internal morphological characters that distinguish the studied species/morphotypes of Ophioderma Müller & Troschel, 1840. The number of DAP pieces is given as an interval, followed by the mean in parentheses. A dash (–) indicates no data are available due to lack of material. Abbreviations: AL = arm length; DAP = dorsal arm plate; DD = disc diameter.
Species/morphotypeO. sodipallaresiO. teresO. teres unicolorOphioderma sp. AOphioderma sp. BExternal morphologyMorphological charactern = 6 9.9–20.9 mm DDn = 43 11.6–33.8 mm DDn = 7 17.1–35.7 mm DDn = 142 6.5–26.7 mm DDn = 56 9.1–33.2 mm DDAL:DD ratio3.43.43.42.73.7Radial shieldscovered/nakedcovered/nakednakednakedcoveredDistal genital slit ornamentationgranule-bearing scalesnaked and granulebearing scalesnaked and granulebearing scalesnaked and granule-bearing scalesgranule-bearing scalesNo. of DAP pieces1–5 (2)1–13 (3)1–6 (2)1–9 (3)1–9 (2)Maximum no. of arm spines1012131012Color patternbrown speckled with creambrown speckled with creamuniform browndark brown with darker, sinuous rings on the discuniform brownInternal morphology–n = 2 26.9–27.8 mm DD–n = 2 26.2–26.4 mm DDn = 2 28.0–28.1 mm DDRadial shields–distal half with a swollen center and scattered pores–distal half with a central raised oval-shaped section without poresdistal half with a swollen center and scattered poresOral plates–robust, compact–lower, elongatedrobust, compact