Bitentaculate Cirratulidae (Annelida: Polychaeta) from the northwestern Pacific Islands with description of nine new species Author Magalhães, Wagner F. Author Bailey-Brock, Julie H. text Zootaxa 2013 3630 1 80 116 journal article 10.11646/zootaxa.3630.1.3 1b52af07-214d-42f1-ae87-d66d081c5c3e 1175-5326 247341 4D83BB98-9426-4138-B945-22B99034E791 Genus Aphelochaeta Blake, 1991 Type Species : Tharyx monilaris Hartman, 1960 designated by Blake, 1991 Diagnosis (modified after Doner & Blake 2009). Prostomium conical; peristomium elongate with 1–4 achaetigerous annulations, with pair of grooved dorsal tentacles arising either on or anterior to chaetiger 1; first pair of branchiae arising either on or anterior to chaetiger 1; thoracic region frequently expanded, with crowded segments; abdominal segments variable, sometimes moniliform; chaetae simple capillaries, with distinct serrations or sawtooth edge not visible in light microscopy, but fibril endings sometimes seen with SEM; far posterior segments may be expanded or not, with or without dorsal and/or ventral grooves , tapering to simple pygidial lobe.