Redescription of <i>Ehlersileanira vulturis</i> (Horst, 1917) n. comb. reinst. and description of two new species of <i>Ehlersileanira</i> (Annelida, Sigalionidae) from Indonesia and the Philippines

<i>Ehlersileanira</i> Pettibone, 1970 was proposed to include sigalionids (Annelida, Sigalionidae) with a median antenna with basal auricles and biarticulated style. <i>Sthenelais incisa Grube, 1877</i> described from Congo is its type species, together with a few junior synonyms, such as <i>Sthenelais simplex Ehlers, 1887</i> from the Gulf of Mexico, <i>Leanira vulturis</i> Horst, 1917 from Indonesia and <i>Leanira izuenzis Takahashi, 1938</i> from Japan. However, in a previous study, it was shown that <i>S. incisa</i>, now <i>Ehlersileanira incisa</i>, included valid species that were once considered its junior synonyms, as in the case of <i>S. simplex</i>, which is now considered distinct from <i>E. incisa</i>. Therefore, a re-examination of its junior synonyms is needed to clarify their status. Type material of <i>Leanira vulturis</i> was studied, as well as non-type specimens of the genus from the same region. The main results include the reinstatement of <i>L. vulturis</i>, which is shown to be distinct from but congeneric with <i>E. incisa</i>. <i>Ehlersileanira vulturis</i> n. comb. reinst. differs from <i>E. incisa</i> in having larger auricles and style in the median antenna, middle region segments bearing sinuous elytra, and the tubular nephridia start from segment 25; whereas <i>E. incisa</i> has smaller auricles, style, middle region elytra are uniform, and the tubular nephridia start from segment 9. Two new species of the genus from the Indo-Pacific are also described: <i>Ehlersileanira longistyla</i> n. sp. and <i>Ehlersileanira marinduquensis</i> n. sp. <i>Ehlersileanira longistyla</i> n. sp. can be distinguished from the rest of its congeners in having a long median antennal style, large inner palpal sheaths and the lowest neurochaetae unit with non-canaliculate blades. On the other hand, <i>E. marinduquensis</i> n. sp. resembles <i>E. vulturis</i>, but can be recognized by the former's robust body shape, small style, and tentacular cirri and neurochaetal blades. A key to all <i>Ehlersileanira</i> species is also included.