Rev 04/04/2023
Epidorylaimus Andrássy, 1986
Type species of the genus: Epidorylaimus lugdunemsis (de Man, 1880) Andrassy, 1986
Ref. Andrassy, 2009; Ahmad et al., 2016
.
Key to species of the genus Epidorylaimus Andrassy, 1986 (from Ahmad et al., 2016)
1. Female genital system amphidelphic . . . . . . . . . . . . . . . . . . . . . 2
Female genital system mono-opisthodelphic . . . . . . . . . E. monhystera
2. Odontostyle less than 15 µm long . . . . . . . . . . . . . . . . . . . . . . . . 3
Odontostyle more than 15 µm long. . . .. . . . . . . . . . . . . . . . . . . . 9
3. Vulva at 36% of body length; ovaries very short . . . E. muscorum
Vulva at more than 40% of body length; ovaries normally developed . . 4
4. Tail longer; c-= 4.5 -7.0 . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Tail shorter; c - = 2.9 -3.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. Smaller species, with short odontostyle (9 -11 µm) . . .. .E. lugdunensis
Medium size species with odontostyle about 14.5 -15 µm . . . E. andrassyi
6. Tail tip pointed, cuticle near odontostyle distinctly thinner than posteriorly. . . . 7
Tail tip finely rounded, cuticle nearodontostyle as thick as cuticle posteriorly. . . 8
7. Lips well separated, head sharply offset, a = 28. . . . . . . . . . . . . E. muchabbatae
Lips hardly separated, head slightly offset, a = 34 . . . . . . . . . . .E. humilior
8. Tail nearly cylindrical in posterior, body slender, a =40 -63. . . .E. leptosoma
Tail gradually narrowing, body less slender, a = 24 -36 . . . . . . . E. humilis
9. Odontostyle more than 25 µm long. . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Odontostyle less than 25 µm long . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
10. Body robust, a = 20 -35; tail hook-like, tip sharply pointed. . . . .. . E. .rivalis
Body slender, a = 42 -50; tail not hook-like, tip finely rounded . . .E. mellenbachensis
11. Tail shorter, c = 16 -24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Tail longer, c =10 -14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
12. Rectum about two anal body diameters long . . . . . . . . . . . . . . . . .E. consobrinus
Rectum about one anal body diameter long . . . . . . . . . . . . .. . . . . E. filicaudatus
13. Tail 6 -8 times anal body diameters long . . . . . . . . . . . . . . . . . .. . . E. pseudoagilis
Tail 3 -5 times anal body diameters long . . . . . . . . . . . . . . . . . . . . . . . 14
14. Tail rapidly narrowing to its middle, then cylindrical. .. . . . . . .. . . .E. agilis
Tail gradually narrowing to its tip . . . . . . . . . . . . . . . . . . .. . . . .. . . .E. angulosus
Widespread distribution worldwide.
University of Nebraska Nematode Website (Developed by Dr. Tom Powers and colleagues)
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Ahmad, W., Imran, Z., Araki, M. 2016. Epidorylaimus monhystera sp. n., an atypical species of the genus Epidorylaimus Andrassy, 1986 (Dorylaimida: Qudsianematidae) from Japan. Zootaxa 4072:090 -100.
Andrassy, I. 2009. Free-living Nematodes of Hungary III. Hungarian Natural History Museum, Budapest. 608p.
Yeates, G.W., T. Bongers, R. G. M. De Goede, D. W. Freckman, and S. S. Georgieva. 1993. Feeding habits in soil nematode families and genera—An outline for soil ecologists. Journal of Nematology 25:315-331.