Neochromadora Micoletzky, 1924

Liang, Huixin, Guo, Wen & Wang, Chunming, 2024, Two new species of Hypodontolaiminae (Nematoda, Chromadorida, Chromadoridae) from the Yellow Sea with a phylogenetic analysis in the subfamily, ZooKeys 1190, pp. 281-302 : 281

Genus Neochromadora Micoletzky, 1924

Diagnosis

(based on Venekey et al. 2019). Cuticle ornamentation heterogeneous and complex, with lateral differentiation visible as two or three longitudinal rows of large dots. Six small outer labial setae or papillae and four cephalic setae in separate circles. Inner labial sensilla may be conspicuous in one species ( N. munita ). Presence of somatic setae in some species. Amphidial fovea transverse slit-like and loop shaped. Buccal cavity with a dorsal tooth and two ventrosublateral teeth, in some species the dorsal one being larger than the others. Denticles can be present. Pharynx anteriorly not swollen or swollen next to the dorsal tooth. Pharynx with a single well-developed posterior bulb. Male usually with numerous precloacal supplements.

Remarks.

The genus Neochromadora was erected by Micoletzky (1924) with the type species Neochromadora poecilosoma (de Man, 1893). And six species, Neochromadora aberrans (Cobb, 1930), Neochromadora craspedota (Steiner, 1916), Neochromadora edentata (Cobb, 1914), Neochromadora izhorica (Filipjev, 1929), Neochromadora poecilosomoides (Filipjev, 1918), Neochromadora sabulicola (Filipjev, 1918) have been added to Neochromadora . Gerlach (1951) described N. tecta Gerlach, 1951, redescribed N. poecilosoma , N. izhorica (Filipjev, 1929), and transferred Spiliphera trichophora (Steiner, 1921) to Neochromadora . Later Gerlach (1952, 1953b) described N. attenuate Gerlach, 1952 and N. complexa Gerlach, 1953b. Wieser (1954a) divided Neochromadora into two subgenera Neochromadorina (Wieser, 1954a) and Trichodorina (Wieser, 1954a) based on tooth structure, cervical and somatic setal length, and pharyngeal bulb and described three new species: N. lateralis Wieser, 1954a, N. calathifera Wieser, 1954a, and N. torquata Wieser, 1954a. Later, Wieser (1954b) described another two species N. amembranata Wieser, 1954b and N. brevisetosa Wieser, 1954b. Afterwards, six species, N. bonita Gerlach, 1956, N. coudenhovei Wieser, 1956, N. notocraspedota Allgén, 1958, N. appiana Wieser, 1959, N. pugilator Wieser, 1959 and N. bicoronata (Wieser, 1959) (synonym Endeolophos spinosus (Gerlach, 1957) were described. Wieser (1959) withdrew the subgenus Neochromadora Trichodorina with a redescription of N. poecilosoma found in Puget Sound. Later, 13 species ( N. alatocorpa Hopper, 1961, N. nitida Timm, 1961, N. munita Lorenzen, 1971, N. paratecta Blome, 1974, N. paramunita Boucher, 1976, N. angelica Riemann, 1976, N. bilineata Kito, 1978, N. oshoroana Kito, 1981, N. orientalis Lemzina, 1982, N. papillosa Pastor de Ward, 1985, N. lineata Pastor de Ward, 1985, N. nicolae Vincx, 1986 and N. alejandroi Lo Russo & Pastor de Ward, 2012) were described. Hopper (1963) considered Neochromadora trilineata Schneider, 1943 as incertae sedis due to the unavailability of specimens. Vincx (1986) considered N. paramunita as a synonym of N. munita . Up to now, 33 species are currently considered as valid (based on Venekey et al. 2019):

1. Neochromadora aberrans (Cobb, 1930) (Antarctic, Commonwealth Bay; = Spiliphera aberrans Cobb, 1930)

2. Neochromadora alatocorpa Hopper, 1961 (USA, Alabama)

3. Neochromadora alejandroi Lo Russo & Pastor de Ward, 2012 (Argentina, San Matías gulf)

4. Neochromadora amembranata Wieser, 1954 (Italy, Sampieri)

5. Neochromadora angelica Riemann, 1976b (Germany, Helgoland)

6. Neochromadora appiana Wieser, 1959 (USA, Washington)

7. Neochromadora bilineata Kito, 1978 (Japan, Hokkaido)

8. Neochromadora bonita Gerlach, 1956 (Brazil, Cananeia)

9. Neochromadora brevisetosa Wieser, 1954 (Italy, Sampieri)

10. Neochromadora calathifera Wieser, 1954b (Chile, Seno Reloncavi)

11. Neochromadora complexa Gerlach, 1953a (Chile, Seno Ultima Esperanza)

12. Neochromadora coudenhovei Wieser, 1956b (Greece, Piraeus)

13. Neochromadora craspedota (Steiner, 1916) (Arctic Ocean, Barents Sea; = Chromadora craspedota Steiner, 1916)

14. Neochromadora edentata (Cobb, 1914) (Antarctic, Cape Royds; = Nygmatonchus edentata (Cobb, 1914) Wieser, 1954, Spiliphera edentata Cobb, 1914)

15. Neochromadora izhorica (Filipjev, 1929) (Baltic Sea, Neva Bay; = Chromadorella izhorica Filipjev, 1929)

16. Neochromadora lateralis Wieser, 1954 (Chile, Seno Reloncavi)

17. Neochromadora lineata Pastor de Ward, 1985a (Argentina, Deseado river)

18. Neochromadora munita Lorenzen, 1972 (Germany, Helgoland; = Neochromadora paramunita Boucher, 1976)

19. Neochromadora nicolae Vincx, 1986 (North Sea, Southern Bight)

20. Neochromadora nitida Timm, 1961 (Indian Ocean, Bengal Bay)

21. Neochromadora notocraspedota Allgén, 1958 (Uruguay, Uruguay coast)

22. Neochromadora orientalis Lemzina, 1982 (Kyrgyzstan, Lake Issyk-Kul)

23. Neochromadora oshoroana Kito, 1981 (Japan, Oshoro Bay)

24. Neochromadora papillosa Pastor de Ward, 1985 (Argentina, Deseado River)

25. Neochromadora parabilineata sp. nov. (China, Yellow Sea)

26. Neochromadora paratecta Blome, 1974 (Germany, Sylt)

27. Neochromadora poecilosoma (de Man, 1893) (North Sea, English Channel; = Chromadora poecilosoma de Man, 1893)

28. Neochromadora poecilosomoides (Filipjev, 1918) (Black Sea, Kruglaya Bay and Georgievskii Monastery Bay; = Chromadora poecilosomoides Filipjev, 1918)

29. Neochromadora pugilator Wieser, 1959 (USA, Washington)

30. Neochromadora sabulicola (Filipjev, 1918) (Black Sea, Kruglaya Bay and Georgievskii Monastery Bay; = Chromadora sabulicola Filipjev, 1918)

31. Neochromadora tecta Gerlach, 1951 (Germany, Amrum Island)

32. Neochromadora torquata Wieser, 1954 (Chile, Seno Reloncavi)

33. Neochromadora trichophora (Steiner, 1921a) (Spain, Canary Islands; = Spiliphera trichophora Steiner, 1921, Neochromadora longisetosa Schuurmans-Stekhoven, 1935)