Ancistrosyllis McIntosh 1878
Creators: name: Plathong, Jintana
name: Dean, Harlan K.
name: Plathong, Sakanan
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Phyllodocida
Pilargidae
Ancistrosyllis

description: 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 absent................................................................................... 11
10A(9A) First notopodial hooks from chaetiger 3............................................. A. papillosa Jones, 1961; USA coast of Gulf of Mexico
10B(9A) First notopodial hooks from chaetiger 7................................................ A. falcata Day, 1957; South Africa
11A(9B) Ventral cirri from chaetiger 2........................................................................ 12
11B(9B) Ventral cirri from chaetiger 3; notopodial hooks from chaetigers 4–7..................... A. hamata Hartman, 1960; Southern California, Pacific Ocean
12A(11A) Notopodial hooks from chaetiger 6........................................... A. carolinensis Gardiner, 1976; North Carolina to the Gulf of Mexico, Western Atlantic
12B(11A) Notopodial hooks from chaetiger 7........................................ A. matlaensis Mandal & Deb, 2018; Estuarine System, India, Indian Ocean
description: Published as part of Plathong, Jintana, Dean, Harlan K. & Plathong, Sakanan, 2021, Four new species of Pilargidae (Annelida: Pilarginae) from the Gulf of Thailand, pp. 537-562 in Zootaxa 5071 (4) on page 539, DOI: 10.11646/zootaxa.5071.4.4, http://zenodo.org/record/5726460