Hubrechtella Bergendal, 1902

Kajihara, Hiroshi, 2006, Four palaeonemerteans (Nemertea: Anopla) from a tidal flat in middle Honshu, Japan, Zootaxa 1163, pp. 1-47: 27-28

publication ID

http://doi.org/ 10.5281/zenodo.2645302

publication LSID

lsid:zoobank.org:pub:95608DB2-F9ED-4B68-8E9E-93EE84887227

persistent identifier

http://treatment.plazi.org/id/03825157-FF92-567D-FB3F-9730FD99FC91

treatment provided by

Plazi

scientific name

Hubrechtella Bergendal, 1902
status

 

Genus Hubrechtella Bergendal, 1902 

Hubrechtella Bergendal, 1902b: 9  .

Coeia Takakura, 1922: 422  syn. nov.

Type species Hubrechtella dubia Bergendal, 1902  , by monotypic designation.

Diagnosis As given by Gibson (1979a).

Systematic remarks

The genus Coeia Takakura, 1922  is here considered a subjective junior synonym of Hubrechtella Bergendal, 1902  . Both genera were recently transferred from Hubrechtidae Bürger, 1892  to a new family, Hubrechtellidae, by Chernyshev (2003). Up until Takakura (1922) established the monotypic genus Coeia  , the family Hubrechtidae  had contained two genera, Hubrechtia Bürger, 1892  and Hubrechtella Bergendal, 1902  . However, judging from Takakura’s (1922) statement that the family contained a single genus, Hubrechtia, Takakura  was apparently unaware of Hubrechtella  when he erected Coeia  .

Takakura (1922) used the following criteria to define Coeia  : 1) no excretory system, 2) no inner circular muscle layer, 3) no eyes, 4) shallow lateral intestinal diverticula, and 5) a ‘tail’ region, which lacks both intestine and gonads. The first three characters fully agree with the generic diagnosis of Hubrechtella  . The fourth character state can be formed by the serial arrangement of gonads, which are situated medially and associated with the intestinal wall; this character might vary intraspecifically, depending upon degree of maturity. The last character, which Takakura (1922) pointed out is similar to the caudal cirrus found in certain heteronemerteans, is known in juveniles of Hubrechtella dubia ( Cantell 1969)  ; the presence of the ‘tail’ in adult Coeia ijimai  can be interpreted as a heterochronic retention of this character.

Kingdom

Animalia

Phylum

Nemertea

Class

Palaeonemertea

Family

Hubrechtidae

Loc

Hubrechtella Bergendal, 1902

Kajihara, Hiroshi 2006
2006
Loc

Hubrechtella

Bergendal, D. 1902: 9
Loc

Coeia

Takakura, U. 1922: 422