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Key to species identification
1a– Body length very long, 6 mm <italic>latus</italic>

1b – Body length shorter, less than 3.5 mm 2

2a – Stoma barrel-shaped or tubular; bursa peloderan (unknown in O<italic>. tereticorpus</italic> and <italic>O. saproxylicus</italic> sp. n.) 3
2b – Stoma tubular; bursa leptoderan or pseudopeloderan 16
3a – Each spicule visibly with different size <italic>sechellensis</italic>

3b – Both spicules with similar size 4
4a – Female rectum scarcely longer than the anal diameter 5
4b – Female rectum ca. 2 to 3 times longer than the anal diameter 6
5a – Body length less than 750 µm; spicules 29 µm long <italic>debilicauda</italic>

5b – Body length more than 750 µm; spicules 32 to 48 µm long <italic>zarinae</italic>

6a – Female tail short conoid (<italic>c</italic>′ &lt; 4) 7
6b – Female tail longer, elongate (<italic>c</italic>′ > 4, rarely 3) 9
7a – Lip region slightly offset by depression; female rectum longer, 3 times anal body diam. <italic>dolichura</italic>

7b – Lip region not offset; female rectum shorter, 2 times anal body diam. 8
8a – Males as frequent as females; spicules longer, 35 µm, exceeding the GP1 <italic>janeti</italic>

8b – Males very rare; spicules shorter, 22 to 30 µm, not reaching the GP1 <italic>dux</italic>

9a – Lip region visibly narrower than adjacent part of body; spicules longer, more than 40 µm 10
9b – Lip region equal or wider than adjacent part of body; spicules shorter, less than 30 µm (unknown in <italic>O. tereticorpus</italic> and <italic>O. saproxylicus</italic> sp. n.) 11
10a – Male body more than 1mm long; spicules longer, 41 to 48 µm <italic>dolichuroides</italic>

10b – Male body less than 1 mm long; spicules shorter, 50 to 52 µm <italic>karachiensis</italic>

11a – Gymnostom anteriorly narrower, with convex walls 12
11b – Gymnostom with parallel walls 14
12a – Lip region offset by constriction; metacorpus slightly swollen <italic>pseudodolichura</italic>

12b – Lip region not offset or slightly offset by depression; metacorpus not swollen 13
13a – Lip region slightly offset by depression; gymnostom as long as promesostegostom; pharynx with metacorpus with sclerotized walls, valves-like; spermatheca differentiated in a sac <italic>tereticorpus</italic>

13b – Lip region not offset; gymnostom slightly shorter than promesostegostom; pharynx with metacorpus without sclerotized walls; spermatheca not differentiated in a sac <italic>saproxylicus</italic> sp. n.
14a – Lip region slightly offset; female rectum ca. two times longer than ABW; GP1 very anterior, outside of the range of the spicules <italic>guentheri</italic>

14b – Lip region not offset; female rectum ca. three times longer than ABW; GP1 at spicules level 15
15a – Body length slightly larger (584-801 µm long); neck slightly shorter relative to the body length (<italic>b</italic> = 4.4-6.0); female tail slightly shorter (63-81 µm, <italic>c</italic> = 8.6–11.8, <italic>c</italic>′ = 3.5-5.0) <italic>onirici</italic>

15b – Body length slightly smaller (505-691 µm long); neck slightly longer relative to the body length (<italic>b</italic> = 3.9-4.9); female tail slightly longer (70-95 µm, <italic>c</italic> = 6.2-8.5, <italic>c</italic>′ = 4.2-6.4) <italic>tipulae</italic>

16a – Female rectum ca. as long or slightly longer than anal body width 17
16b – Female rectum longer than body width 22
17a – GP1 very reduced 18
17b – All GPs with similar size 20
18a – Spicules distally straight <italic>wohlgemuthi</italic>

18b – Spicules distally slightly hook-like 19
19a – Female body less than 1.7 mm long <italic>cynodonti</italic>

19b – Female body more than 1.8 mm long <italic>rupraekramae</italic>

20a – Female stoma 21 to 28 µm long <italic>colombianus</italic>

20b – Female stoma 12 to 20 µm long 21
21a – Female body 0.9 to 1.3 mm long; female tail more slender (<italic>c</italic>′ = 4.6-5.9) <italic>magbooli</italic>

21b – Female body 1.3 to 1.8 mm long; female tail shorter (<italic>c</italic>′ = 2.9-4.2) <italic>esculentus</italic>

22a – Stomatal tube shorter, ca. 1.0 to 2.0 times longer than wide 23
22b – Stomatal tube longer, ca. 2.5 to 3.0 times longer than wide 30
23a – Cheilostom as long as stomatal tube length <italic>insectivorus</italic>

23b – Cheilostom one third of the stomatal tube length 24
24a – GP1 very separated from GP2, and GP2-3 very close <italic>caulleryi</italic>

24b – GP1-2 distance similar or slightly more than GP2-3 distance 25
25a – Spicules with ventral bent tip 26
25b – Spicules with thin tip, crochet needle-like 28
26a – Spicules 43 to 52 µm, with thin tip; GP1-2 distance similar to GP2-3 distance <italic>niazii</italic>

26b – Spicules 50 to 62 µm, with thick tip; GP1-2 distance slightly more than GP2-3 distance 27
27a – Male tail shorter (20-32 µm long) <italic>cobbi</italic>

27b – Male tail longer (38-45 µm long) <italic>siddiqii</italic>

28a – Female rectum ca. 1.5 times longer than ABW; spicules shorter, 34 to 44 µm long <italic>necromenus</italic>

28b – Female rectum ca. 2.0 to 2.5 times longer than ABW; spicules longer, 45 to 70 µm long 29
29a – Spicules shorter (45-51 µm long) <italic>andrassyi</italic>

29b – Spicules longer (57-70 µm long) <italic>citri</italic>

30a – Spicules ventrad curved, as long as anal body width <italic>esperacensis</italic>

30b – Spicules almost straight, longer than anal body width 31
31a – Spicules ca. 1.5 times longer than the gubernaculum <italic>myriophilus</italic>

31b – Spicules ca. 2–3 times longer than the gubernaculum 32
32a – Spicules with manubrium longer than wide 33
32b – Spicules with manubrium as long as wide 35
33a – Lip region higher, twice wider than high <italic>lucianii</italic>

33b – Lip region lower, three times wider than high 34
34a – Stoma shorter, 9 to 10 µm; female tail shorter, (<italic>c</italic>′ = 3.1-4.8, rarely longer) <italic>chongmingensis</italic>

34b – Stoma longer, 13 to 18 µm; female tail longer, (<italic>c</italic>′ = 5.0-6.6) <italic>indicus</italic>

35a – Female rectum ca. 3.0 to 4.5 times longer than anal body width <italic>shamimi</italic>

35b – Female rectum ca. 1.5 to 2.0 times longer than anal body width 36
36a – Female tail shorter, <italic>c</italic>′ = 2.2 to 3.1 <italic>rugaoensis</italic>

36b – Female tail longer, <italic>c</italic>′ = 3.2 to 6.7 37
37a – Male tail with mucro shorter than gubernaculum; spicules with conoid manubrium <italic>nadarajani</italic>

37b – Male tail with mucro longer than gubernaculum; spicules with rounded manubrium <italic>carolinensis</italic>

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Erratum: Morphological and Molecular Characterization of Oscheius saproxylicus sp. n. (Rhabditida, Rhabditidae) From Decaying Wood in Spain, With New Insights into the Phylogeny of the Genus and a Revision of its Taxonomy. DOI: 10.21307/jofnem-2019-053. Vol. 51

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Erratum: Morphological and Molecular Characterization of Oscheius saproxylicus sp. n. (Rhabditida, Rhabditidae) From Decaying Wood in Spain, With New Insights into the Phylogeny of the Genus and a Revision of its Taxonomy. DOI: 10.21307/jofnem-2019-053. Vol. 51

Published Online: Jul 27, 2020

Page range: 1 - 2

DOI: https://doi.org/10.21307/jofnem-2020-075

© 2020 Zafar Ahmad Handoo published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.