TABLE 5 in Taxonomic update and new discoveries in Nereididae (Polychaeta: Phyllodocida) of the Persian Gulf and Gulf of Oman: two new species and four new records

TABLE 5. Comparison of selected characters between Nereis species previously recorded in the region (the Persian Gulf, Gulf of Oman, Indo-Pacific and the present material: Nereis (Nereis) gaikwadi Day, 1973, Nereis (Nereis) gilchristi Day, 1967, Nereis (Nereis) neogracilis Mohammad, 1970, Nereis coutieri Gravier, 1899, Nereis (Nereis) ethiopiae Day, 1965, N. falcaria (Willey, 1905), N. filicaudata Fauvel, 1951, N. ghardaqae Hartmann-Schröder, 1960, N. granulata Day, 1957, N. jacksoni Kinberg, 1866, N. longilingulis Monro, 1937, N. pelagica Linnaeus, 1758, N. persica Fauvel, 1911, Nereis cf. persica sensu Bonyadi-Naeini et al. and Nereis quadrata sp. nov, N. sarsoensis Hartmann-Schröder, 1960. This table is based on species information from original descriptions. Features compared include: Pigmentation, Prostomium form (deeply notched or not notched), Paragnath shape, Numbers and arrangement of Paragnaths in areas I (AI), II (AII), III (AIII), IV (AIV), V (AV), VI (AVI) and VII–VIII (AVII–VIII), Posterior notopodial homogomph falcigers (Post NHF) Smooth or one to three teeth or lightly serrated, Shape of dorsal notopodial ligule (Shape DLi) Posteriorly expanded and lamellate or not markedly expanded. SpeciesPigmentationProstomium formParagnath shapeNumbers and arrangement of ParagnathsPost NHFShape (DLi) PosteriorlyAIAIIAIIIAIVAVAVIAVII– VIIINereis (Nereis) gaikwadi Day, 1973Colour pattern faint in holotype, distinct in paratypes; prostomium with intense brown bars; peristomium with rough rectangle; first chaetigers with two brown bars; later chaetigers with paired lateral spotsNot notchedConical black paragnaths in all areas12-3 oblique rows of about 15An oval area of about 15A wedge of about 20 cones1A close-set group of 5-6A broad band of cones 4-5 deepOne or two homogomph falcigers with short, curved blades bearing a single small toothNot markedly expandedNereis (Nereis) gilchristi Day, 1967???1A close-set wedgeA few scattered conesA wedge0A rosette of 8-10 cones,A continuous row two to three deep?Markedly expandedNereis (Nereis) neogracilis Mohammad, 1970The living organism fleshy anteriorly and pale yellow posteriorlyNot notchedHorny paragnaths of various sizes: large and small cones5 large conesOn each side, an irregular clusterA rhomboidal patchOn each side, a wedge-shaped cluster5 large cones; curved transverse row of 8 smaller cones; single cone behind each endOn each side an irregular patch of 11–12 cones,, An anterior row followed by numerous small cones, set in triangular patchA single homogomph falciger with smooth terminal pieceNot markedly expanded or lamellate. Dorsal cirrus long and terminalNereis coutieri Gravier, 1899Second chaetiger dorsally with brown spot; subsequent chaetigers with similar but attenuated pigmentationNot notched?0–14–6 in a lineSmall irregular group of 5–7A triangular group 7–80A close-set cluster about 5–6A single row of 8Short smooth conesExpanded lamellateNereis (Nereis) ethiopiae Day, 1965Completely pale in alcohol; colour pattern absentNot notchedAll paragnats small subequal cones1A triangular group of about 20An oval group of about 25A wedge-shaped group of about 1543-4 in a triangle or small square3-4 rows of numerous irregularly arranged cones1-2 homogomph falcigers with smooth conical bladeThe superior lobe of the notopodium becomes very longNereis falcaria (Willey, 1905)With Pattern of broken brown bars anteriorlyDeeply notchedAll paragnaths pale and very difficult to see0A double row about 8A scattered group of 5–10A wedge-shaped group of 6–100A close-set cluster about 3–4A single row of 8Large homogomph falcigers with two to three large teethAlways small and decreased in sizeNereis filicaudata Fauvel, 1951Colourless in alcoholNot notchedSmall and large cone0One or two rows, rather large conesA small, irregular transverse groupOne or two rows, rather large cones0VI = 2 + 2, 1 + 2, 3 + 2, most often 2 + 2A single row of large conesNo homogomph falcigerNot expandedNereis ghardaqae Hartmann-Schröder, 1960No pigmentationNot notchedCones1 or 02 one above the other14 in a curved row016One homogomph falciger with short, slender, smooth blade?Nereis granulata Day, 1957The colour is creamy-white, Anterior chaetigers banded with brown markingNot notchedParagnaths minute, pale, granularA small patch of about 6Wedge-shaped areas of numerous minute coneAn oval patch of a few specksWedge-shaped areas of numerous minute cone0About 6 in a rosetteVII and VIII form a very broad ventral band of almost colourlessOne or two homo-gomph falcigers with smooth bladeNot markedly expandedNereis jacksoni inberg, 1865?Not notchedAll paragnaths pale and very difficult to see0A double rowAn oval patch of 4–6 sometimes lackingA wedged-shaped group0A small close-set cluster about 3–6A single row of 7–8Stout falcigers with two to three large teethAlways smallNereis longilingulis Monro, 1937No colour - markingsNot notched?0 Small crescentic patchesA transverse row of 4 relatively large paragnathsSmall crescentic patches0A single small paragnathVII=a single small paragnath VIII=0?Not markedly expandedNereis pelagica Linnaeus, 1758??Large and small cones2–3An oblique double rowAn oval patchA wedged-shaped group04–5 large cones in a cross1–2 irregular rows of large cones, followed by several irregular rows of smaller onesShort, smooth bladeNot expandedNereis persica Fauvel, 1911On 10 to 12 anterior chaetigers traces of transverse brownish bands??0–1A double row of 8–10A few scattered cones2–3 rows0A close-set cluster about 6–10A broad band with an anterior row of large cones and two or three posterior rows of fine conesWith one to two blunt teethNot expandedNereis cf. persica sensu Bonyadi-Naeini et al.No pigmentationNot notchedConical paragnaths09 conical paragnaths arranged in triangle10 scattered cones24-25 conical paragnaths arranged in 2-3 rows0A close-set cluster about 11A broad band with a mixture of large cones and fine conesWith one to two blunt teethNot expandedNereis quadrata sp. nov.Colour of body in alcohol creamy without any pigments from anterior part to the most posterior of the bodyNot notchedMinute and large horny paragnaths2–6 conical paragnaths arranged in triangle9–16 minute and large horny paragnaths arranged in wedge shapeGroup of 20–31 minute conical paragnaths28–39 minute and large horny paragnaths arranged in a wedge shape4–9 minute conical paragnaths arranged in tri-angle shape6–10 minute conical paragnaths arranged in wedge shapeWide band of fine and coarse conical paragnaths; Area VII with fine paragnaths in hollow squares toward jaws; band narrows in Area VIII with coarse paragnathsShort smooth conesDorsal notopodial ligule larger and longer than ventral notopodial lobe but not markedly expanded or lamellate. Dorsal cirrus long and terminalNereis sarsoensis Hartmann-Schröder, 1960Prostomium with two winding brown longitudinal bands; buccal segment and anterior chaetigers evenly brown, with dense narrow transverse bands; remaining chaetigers and appendages paleNot notched?14 in a curved row04 in a slanted row3 arranged vertically4–6 in a round to elongated cluster7One homogomph, falciger with an almost straight, toothed terminal bladeNot markedly expanded ......continued on the next page ......continued on the next page ......continued on the next page ......continued on the next page ......continued on the next page