Molecular phylogenetics facilitates the first historical biogeographic analysis of the hammerhead worms (Platyhelminthes: Tricladida: Bipaliinae), with the description of twelve new species and two new genera Author Solà, Eduard 0000-0003-1848-4085 eduardsola@ub.edu Author Sluys, Ronald 0000-0002-9776-3471 luys@naturalis.nl Author Riutort, Marta 0000-0003-1848-4085 eduardsola@ub.edu Author Kawakatsu, Masaharu 0000-0003-1848-4085 eduardsola@ub.edu text Zootaxa 2023 2023-08-18 5335 1 1 77 http://dx.doi.org/10.11646/zootaxa.5335.1.1 journal article 276875 10.11646/zootaxa.5335.1.1 93074190-36cb-467e-a6ef-103ac5e13f4b 1175-5326 8261375 E4E9FD1D-1923-416E-A5B5-4AC62A4F5DCD Novibipalium rhynchophorum Solà & Sluys , sp. nov. Material : Holotype , ZMA . V .Pl.3053.a (field number KSL2381.1), Tōkyō , near the Canal , Taitō-Ku, Tōkyō, Kantō Region , Honshū , Japan , 21 November 2003 , coll. Mr. G.-Y. Sasaki , seven portions sectioned at intervals of 8 μm, comprising a total of 151 slides as follows: horizontal sections containing the head on 25 slides; horizontal sections on 15 slides and transverse sections on 6 slides of the portion between the “neck” and the pharynx; sagittal sections on 21 slides containing most of the pharynx; sagittal sections containing part of the pharynx and the copulatory apparatus on 35 slides; sagittal sections of two portions of the segment posterior to the copulatory apparatus on 15 slides and 34 slides. Paratype , ZMA . V .Pl.3053.b (field number KSL2381.2), Tōkyō , near the Canal , Taitō-Ku, Tōkyō, Kantō Region , Honshū , Japan , 21 November 2003 , coll. Mr. G.-Y. Sasaki , five portions sectioned at intervals of 8 μm, comprising a total of 98 slides, as follows: horizontal sections containing the head on 19 slides; horizontal sections on 15 slides and transverse sections on 10 slides containing a portion between the “neck” and the pharynx; sagittal sections containing the pharynx and the copulatory apparatus on 42 slides; sagittal sections of the tail on 12 slides . Paratype , ZMA . V .Pl.3053.c (field number KSL2381.3), Tōkyō , near the Canal , Taitō-Ku, Tōkyō, Kantō Region , Honshū , Japan , 21 November 2003 , coll. Mr. G.-Y. Sasaki , anterior part of a specimen including the head and the “neck” but not containing either the mouth or the copulatory apparatus. A portion was cut off for DNA extraction. Posterior part was lost .