Treadwellphysa Molina-Acevedo and Carrera-Parrai 2017
Creators: name: Molina-Acevedo, Isabel C.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Eunicida
Eunicidae
Treadwellphysa

description: Taxonomic key for species of Treadwellphysa
(based on Molina-Acevedo and Carrera-Parra 2017)
1. With compound falcigers and spinigers .............................................................................. 2 - With only compound falcigers .................................................................................................. 5
2(1). With compound spinifalcigers.................................................................................................... 3 - Without compound spinifalcigers............................................................................................. 4
3(2). Postchaetal lobes longer than chaetal lobe in first 4 chaetigers; compound falcigers with long blades 2 times longer than the short blades in anterior region; compound spinifalciger present in first 22 chaetigers (in specimens with L10 = 5 mm, W10 = 2 mm)......................... ......................... T. amadae (Fauchald, 1977)
- Postchaetal lobes as long as chaetal lobe in first 4 chaetigers; compound falciger with long blades 3 times longer than short blades in the anterior region; compound spinifalciger present in first 46 chaetigers (in specimens with L10 = 5.6 mm, W10 = 2.3 mm)....................................................................................................... .................................................. T. yucatanensis Molina-Acevedo and Carrera-Parra, 2017
4(2). With compound spinigers only in anterior chaetigers; compound falcigers in all chaetigers.................................................................... T. mixta (Fauchald, 1970) comb. nov.
- With compound spinigers in all chaetigers; compound falcigers only on chaetigers 30 – 54.................................... .................................... T. dartevellei (Monro, 1936) comb. nov.
5(1). With compound spinifalcigers.................................................................................................... 6 - Without compound spinifalcigers.............................................................................................. 7
6(5). Subacicular hooks reddish along most of its length, translucent on the distal tip. ................................................................................................................................ T. rizzoae sp. nov.
- Subacicular hooks translucent.............................................................. T. villabolosi sp. nov.
7(5). Postchaetal lobes conical, longer than chaetal lobes in first 4 chaetigers; compound falcigers with long blade 2.5 times longer than short blade in anterior chaetigers.................................................................................... T. languida (Treadwell, 1921)
- Postchaetal lobes rounded, as long as chaetal lobes in first 4 chaetigers; compound falcigers with long blades 3 times longer than short blades in anterior chaetigers.................. T. veracruzensis (de León-González and Díaz-Castañeda, 2006)
description: Published as part of Molina-Acevedo, Isabel C., 2019, Redescription of two species previously regarded as Marphysa de Quatrefagesı 1865 ı with the description of new species of Treadwellphysa Molina-Acevedo and Carrera-Parraı 2017, pp. 517-540 in Journal of Natural History 53 (9) on page 520, DOI: 10.1080/00222933.2019.1596328, http://zenodo.org/record/3675703