TABLE 1 in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972

TABLE 1. Comparative table of the valid species of Sthenolepis Willey, 1905 (Read & Fauchald 2024), including the geographical and bathymetrical distribution. The number of times in sizes relationships between wide and length is given by ‘×’.
S. fimbriarum (Hartman, 1939)S. grubei (Treadwell, 1901)S. Japonica (McIntosh, 1885)S. Javanica (Horst, 1917)S. kuekenthali Augener, 1922S. melanocephala (Horst, 1917)S. oculata (Hartman, 1942)S. spargens Fauchald, 1972Leanira izuensis Takahashi, 1938Leanira vulturis Horst, 1917S. ruffi n. sp.Type localityEscondido Bay, off Carmen Island, Baja California, MexicoPuerto RicoKobe, JapanN coast of JavaKingston, JamaicaMolo Strait, IndonesiaOff Cayo Fragoso, CubaMazatlán, MexicoIzu Peninsula, JapanMakassar, IndonesiaW of Farallon Islands, California, USADepth (m)Shore–18.2191.4330–69–914381,750–3,40030–13030.6–562,350–3,253Median antenna style size compared to prostomiumSlightly longerShorter2× as long4× as long–Slightly longer––Slightly longer, biarticulateHalf as long, biarticulate4× as longAuricle size compared to median ceratophoreSimilar lengthSlightly larger½ as longSimilar length–Similar length½ as long½ as longSimilar length½ as long½ as longEyesPresentPresentPresentAbsentPresentPresentPresentAbsentAbsentPresentAbsentPalps size (reach segment)–Segment 9Approx. Segment 16Segment 10–Segment 12Segment 13Segment 20Segment 14Approx. Segment 18Segment 12Tentacular cirri size compared to parapodiaSimilar–Slightly longer2× as long–3× as long–12× as longSlightly longer6× as long5× as longNeurochaetae canaliculateAbsentAbsentPresentPresentPresentPresentPresentPresentPresentPresentPresent, may be absent in lowest neurochaetaeNeurochaetal handles (distal section)Slightly spinoseSmoothSmoothSubdistal tooth–SmoothSmoothEnlarged subdistal toothSmoothSmoothSmall subdistal toothFirst branchiaeSegment 7––Segment 5–Segment 5–Segment 2Segment 13Segment 13Segment 2Elytral surface/Smooth/Smooth/Smooth/Granular/Smooth/Granular/SmoothSmooth/–Smooth/Smooth/Smooth/MarginFimbriaeFimbriaeFimbriaeFimbriaeAnterior ones with fimbriae, posterior ones smoothSmoothSmoothSmoothSmoothReferenceHartman 1939Treadwell 1901McIntosh, 1885; Uschakov & Wu 1959; Imajima 1997Horst 1917Augener 1922Horst 1917Hartman 1942Fauchald 1972; this studyTakahashi 1938Horst 1917This study
Sthenolepis gracilior Augener, 1927 was deliberately kept out of this table due to the lack of morphological details in the original description, which may agree or disagree with Sthenolepis but to other morphologically close genera such as Horstileanira or Labiosthenolepis. Currently, Leanira izuensis and L. vulturis are junior synonyms of Ehlersileanira incisa (Grube, 1877); however, here they are considered in the table due to the past combination under the genus-group name Sthenolepis and the current unclear specific status (Hartman 1965; Cruz-Gomez 2022b).