Spilophorella Filipjev, 1918

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 : 45

Genus Spilophorella Filipjev, 1918

The genus Spilophorella was erected by Filipjev (1918) to accommodate Spilophora paradoxa de Man, 1888 (erected as type species), Spilophora ceylonensis Cobb, 1890 and the new species S. euxina Filipjev, 1918 . Later, 12 species were described ( S. tasmaniensis Allgén, 1927 ; S. campbelli Allgén, 1928 ; S. papillata Kreis, 1929 ; S. candida Gerlach, 1951 ; S. paradoxoides Timm, 1952 ; S. meyerabichi Gerlach, 1955 ; S. tollenifera Wieser, 1955 ; S. aberrans Timm, 1961 ; S. furcata Murphy, 1963 ; S. bidentata Platonova, 1971 ; S. unidentata Platonova, 1971 and S. intermedia Gagarin & Lemzina, 1982 ). S. simplex is cited by Wieser (1959) but this species was never described, consequently it is considered nomen nudum. More recently S. bidentata and S. unidentata were transferred to Panduripharynx by Dashchenko (1989).

Diagnosis (modified from Tchesunov 2014): Cuticle with complex heterogeneous punctated ornamentation and lateral differentiation of larger dots arranged in longitudinal rows. Six small outer labial setae or papillae and four cephalic setae in separate circles. Presence of somatic setae in some species. Amphideal fovea transverse slitlike shaped. Buccal cavity deep with a long hollow dorsal tooth and, in some species, a smaller ventral tooth is present (e.g. S. aberrans and S. euxina ). Peribuccal pharyngeal tissue swollen slightly and nearly symmetrical. Elongated posterior double bulb present. Males without supplements. Tail ending with a very conspicuous pointed caudal tube (spinneret). It is a largely marine genus, but two species ( S. intermedia and S. meyerabichi ) were recovered in brackish water habitats.

Number of valid species: 13

Genus Spilophorella Filipjev, 1918

VALID SPECIES

1. Spilophorella aberrans Timm, 1961 (Indian Ocean, Bengal Bay)

2. Spilophorella campbelli Allgén, 1928 ( New Zealand, Campbell Island)

3. Spilophorella candida Gerlach, 1951 ( Germany, Amrum island)

4. Spilophorella ceylonensis ( Cobb, 1890) Filipjev, 1918 (Indian Ocean, Arabian Sea and Ceylon)

Syn. Spiliphera ceylonensis Cobb, 1890

5. Spilophorella euxina Filipjev, 1918 (Black Sea)

6. Spilophorella furcata Murphy, 1963 ( USA, Depoe Bay)

7. Spilophorella intermedia Gagarin & Lemzina, 1982 ( Kyrgyzstan, Lake Issyk-Kul)

8. Spilophorella meyerabichi Gerlach, 1955 (San Salvador)

9. Spilophorella papillata Kreis, 1929 (English Channel)

10. Spilophorella paradoxa (de Man, 1888) Filipjev, 1918 (North Sea)

Syn. Spiliphera paradoxa de Man, 1888

Spilophorella tenuicaudata de Man, 1922

Spilophorella mediterranea Micoletzky, 1924

11. Spilophorella paradoxoides Timm, 1952 ( USA, Chesapeak bay)

12. Spilophorella tasmaniensis Allgén, 1927 ( Australia, Tasmania)

13. Spilophorella tollenifera Wieser, 1955 ( Japan, Shirahama-cho)

NOMEN NUDUM

1. Spilophorella simplex Wieser, 1959 (Chesapeake Bay)