Travisia Johnston, 1840

Yang, Deyuan, Wu, Xuwen, Wang, Zhi, Zhao, Xiaoyu, Hwang, Jiangshiou & Cai, Lizhe, 2022, Redescription of a rarely encountered species Travisa chinensis Grube, 1869 (Annelida, Travisiidae), including a description of a new species of Travisa from Amoy, China, ZooKeys 1128, pp. 1-17 : 1

Genus Travisia Johnston, 1840

Type species.

Travisia forbesii Johnston, 1840.

Diagnosis

(based on Rizzo and Salazar-Vallejo 2020). Body subfusiform or grub-like. No obvious ventral or lateral groove. Segments annulated, with integument papillated. Prostomium small, conical or truncate, with no eyes and prostomial processes. Nuchal organs present. Parapodia reduced to two fascicles of capillary chaetae, with no dorsal or ventral cirri. Parapodial lappets or lobes present above and below the fascicles of chaetae in some species. Branchiae present or absent. A series of interramal sensory organs or pores present between dorsal and ventral fascicles of chaetae. Nephridial pores present. Pygidium ovoid or cylindrical.

Remarks.

Three genera ( Dindymenides , Kesunis , and Travisia ) were included in the subfamily Travisiinae Hartmann-Schröder, 1971, and later Dindymenides and Kesunis were synonymized with Travisia by Dauvin and Bellan (1994). Blake and Maciolek (2020) elevated Travisiinae Hartmann-Schröder, 1971 to family Travisiidae , with Travisia as the only valid genus. However, the synonymization of these three genera by Dauvin and Bellan (1994) was only based on the morphological study and a molecular phylogenetic analysis has yet to have been done.