Table 6 in High diversity and new species of meiofaunal Nerillidae (Annelida) in subtidal sediments and anchialine caves of the East China Sea

Table 6 (continued on next page). Selected morphological characters comparison of Mesonerilla Remane, 1949 with brooding hood, hermaphroditic Mesonerilla and Nipponerilla irabuensis Worsaae, Hansen & Fujita, 2021. All measurements are in µm. Asterisk (*) indicates measurements of species obtained from scanning electron microscopy (SEM). Measurements of new species are based on available specimens, including type material and live observations. Abbreviations: A = absent; ant = antenna; G = gonochoristic; H = hermaphroditic; L = length; max = maximum; med = median; segm = segment; P = present; para = parapodial; I–IX = segments I–IX;? = unknown. References: 1 = Lévi 1953; 2 = Swedmark 1959; 3 = Westheide 2008; 4 = Wilke 1953; 5 = Worsaae et al. 2019a; 6 = Worsaae et al. 2021b. SpeciesBodyAntennaePalpsParapodial cirriPygidial cirriChaetaeReproductionMax LTrunk segm, relative sizeShapeDistinctly shorter med antMax LSize along bodyMax LShapeMax LSegm lacking chaetaeSegm I, max no.Segm I, max LSegm II–IX, max no.Segm II–IX, max LBrooding hoodMax no. embryosSpermioducs openingM. harubangi sp. nov. *725EqualCylindrical?56Increasing152Cylindrical; tapering70–1210926191GP2?M. intermedia 3,41645EqualCylindrical; taperingYes210Increasing360Bottle-shaped330–1319516345GP4V + VI (fused)M. laerkae 61170EqualBottle-shaped; taperingNo70Equal90Bottle-shaped170–48015180GP6?M. gamaglandulata sp. nov.785Segment VII–IX smallerCylindrical; slightly swollen?82Equal59Cylindrical; tapering216–875*8120*HA?VI + VIIM. dannyi sp. nov.875EqualCylindrical; slightly swollen??Equal65Cylindrical; tapering?I––12180HA?VI + VIIM. armoricana 2,31100EqualCylindrical; slightly swollenYes80Equal50Cylindrical225I––980HA?VI + VIIM. fagei 2,31000EqualCylindricalYes175Equal100Cylindrical240–910010160HA?VI + VIIM. roscovita 1,3800EqualCylindricalYes100Equal in segm II–VIII; longer in segm IX45Cylindrical200I––17140HA?VI + VIINipponerilla irabuensis 5616Segment IV–V widestCylindricalNo117Slightly increasing85Cylindrical28 (broken)–10?12141HA?VII + VIII