Prochromadora Filipjev, 1922

Venekey, Virag, Gheller, Paula F., Kandratavicius, Noelia, Cunha, Beatriz Pereira, Vilas-Boas, Ana Carolina, Fonseca, Gustavo & Maria, Tatiana F., 2019, The state of the art of Chromadoridae (Nematoda, Chromadorida): a historical review, diagnoses and comments about valid and dubious genera and a list of valid species, Zootaxa 4578 (1), pp. 1-67: 14-15

publication ID

https://doi.org/10.11646/zootaxa.4578.1.1

publication LSID

lsid:zoobank.org:pub:CE27CD48-70BB-4979-9C67-A1A2E1BAAFFD

persistent identifier

http://treatment.plazi.org/id/52215C67-FFFC-FF8C-FF21-FAED821AFD64

treatment provided by

Plazi

scientific name

Prochromadora Filipjev, 1922
status

 

Genus Prochromadora Filipjev, 1922  

This genus was established with P. orleji (de Man, 1880)   as the type species ( Filipjev, 1922) and it is unique within Chromadorinae   in having homogenous cuticle without transversal rows of dots or lateral differentiation. Filipjev (1930) reviewed the genus and transferred three species from Chromadora   to Prochromadora   : P. orleji   , P. erythrophthalma   and P. minor   . These latter two species were regarded as Chromadorina   in the review of Wieser (1954), who also transferred Chromadorita   and Chromadora   species to Prochromadora   [ P. magna ( Schulz, 1935)   and P. exigua ( Ditlevsen, 1928)   , respectively]. In this review, a key based on the length of nematodes was also proposed, in which P. magna   is distinguished from the other species based on its relatively large body length (2- 2.5mm). Tarjan et al. (1991) redescribed P. orleji   and proposed a key for the nine species valid at that time. Based on this key, males of this genus can be easily separated in two groups based on the presence ( P. argentinensis Pastor de Ward, 1984   ; P. exigua   ; P. megodonta Filipjev, 1922   ; P. orleji   ; P. spiltzbergensis Gerlach, 1965   and P. trisupplementa Murphy, 1963   ) and absence ( P. asupplementa Hopper, 1961   and P. bulbosa Galtsova, 1976   ) of precloacal supplements. When precloacal supplements are present they can range from 3 to 20. P. helenae   was the most recent species described in this genus by Tchesunov (2015) and it can be included in the group of species without precloacal supplements.

Diagnosis (modified from Tchesunov 2014): Homogeneous punctated cuticle without transversal rows of dots and without lateral differentiation. Amphideal fovea transverse slit-like, but not visible in several species. Single large dorsal tooth opposed by a ventrosublateral pit or at most by a small elevation of the buccal wall or small ventrosublateral teeth. Posterior pharyngeal bulb well developed. Precloacal supplements usually present in males. It is mainly marine genus, but C. orleji   is also recorded in freshwater.

Number of valid species: 10

Genus Prochromadora Filipjev, 1922  

VALID SPECIES

1. Prochromadora argentinensis Pastor de Ward, 1984   (Puerto Deseado, Argentina)

2. Prochromadora asupplementa Hopper, 1961   (Alabama, USA)

3. Prochromadora bulbosa Galtsova, 1976   (White Sea)

4. Prochromadora exigua ( Ditlevsen, 1928) Wieser, 1954   ( Greenland)

Syn. Chromadora exigua Ditlevsen, 1928  

5. Prochromadora helenae Tchesunov, 2015   (Mid-Atlantic Ridge)

6. Prochromadora magna ( Schulz, 1935) Wieser, 1954   (Mediterranean)

7. Prochromadora megodonta Filipjev, 1922   (Black Sea)

8. Prochromadora orleji (de Man, 1880) Filipjev, 1922   (North Sea)

Syn. Chromadora orleji de Man, 1880  

9. Prochromadora spitzbergensis Gerlach, 1965   ( Svalbard)

10. Prochromadora trisupplementa Murphy, 1963   (Oregon, USA)

Kingdom

Animalia

Phylum

Nematoda

Class

Chromadorea

Order

Desmodorida

Family

Chromadoridae

Loc

Prochromadora Filipjev, 1922

Venekey, Virag, Gheller, Paula F., Kandratavicius, Noelia, Cunha, Beatriz Pereira, Vilas-Boas, Ana Carolina, Fonseca, Gustavo & Maria, Tatiana F. 2019
2019
Loc

Prochromadora

Filipjev 1922
1922