Ancistrosyllis McIntosh 1878

• Main Authors: Plathong, Jintana, Dean, Harlan K., Plathong, Sakanan
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Phyllodocida; Pilargidae; Ancistrosyllis; Arctic; Arctic Ocean; Greenland; Pacific; McIntosh; Gardiner
• Online Access: https://zenodo.org/record/5727716; https://doi.org/10.5281/zenodo.5727716

Key to the species of Ancistrosyllis McIntosh, 1878 1A Prostomium with only a median antenna with two pairs of eyespots and one pair of small, subulate tentacular cirri. A. quellina Wesenberg-Lund, 1962 Chile, SE Pacific 1B Prostomium with both a median antenna and two lateral antennae. 2 1C Prostomium with two lateral antennae, median antenna absent. 9 2A(1B) Eyespots present, one pair. 3 2B(1B) Eyespots absent. 4 3A(2A) Two pairs of short, subequal tentacular cirri; dorsal cirri from chaetiger 1 and ventral cirri from chaetiger 3; first notopodial hooks from chaetiger 3. A. hartmanae Pettibone, 1966 Chesapeake Bay to Gulf of Mexico, Western Atlantic 3B(2A) Two pairs of tentacular cirri, both dorsal and ventral cirri from chaetiger 1; first notopodial hooks from chaetiger 5. A. cingulata Korschelt, 1893 Adriatic Sea 4A(2B) First notopodial hooks from chaetiger 3. 5 4B(2B) First notopodial hooks from other chaetigers. 6 5A(4A) Dorsal and ventral cirri from chaetiger 1; neurochaetae 2 types, bifid tips. A. nakkaritae sp. nov. Gulf of Thailand, Western Pacific 5B(4A) Dorsal cirri from chaetiger 1; ventral cirri from chaetiger 2. A. fioronii Fiege & Böggemann, 1999 North Sea, Atlantic Ocean 5C(4A) Dorsal cirri from chaetiger 1; ventral cirri from chaetiger 3; neurochaetae 2 types unidentate tips. A. kornkanokae sp. nov. Gulf of Thailand, Western Pacific 6A(4B) Dorsal and ventral cirri from chaetiger 1. 7 6B(4B) Dorsal cirri from chaetiger 1; ventral cirri from chaetiger 3, first notopodial hooks from chaetiger 6. A. jonesi Pettibone, 1966 Maryland, Atlantic Ocean 7A(6A) First notopodial hooks from chaetiger 4–6. 8 7B(6A) First notopodial hooks from chaetiger 13. A. breviceps Hartman, 1963; Southern California, Pacific Ocean 8A(7A) First dorsal cirri twice as long as following ones. A. groenlandica McIntosh, 1878 off Greenland, Arctic Ocean 8B(7A) First notopodial hooks from chaetiger 6. A. commensalis Gardiner, 1976 North Carolina, Atlantic Ocean 9A(1C) Eyespots present. 10 9B(1C) Eyespots ...