Enchodelus, Thorne, 1939

Baqri, Qaiser H. & Jairajpuri, M. Shamim, 1974, Nematodes Of High Altitudes In India V. Five New Species Of The Genus Enchodelus Thorne, 1939 (Dorylaimida), Nematologica 20 (2), pp. 131-146 : 145-146

KEY TO SPECIES OF ENCHODELUS

1. Tail conoid, ventrally arcuate or straight..............................................2 Tail rounded or hemispheroid ...................................................... 14

2. Tail bluntly conoid, straight .........................................................3 3 Tail sharply conoid, ventrally arcuate .................................................4

3. Odontostyle 34>m, 2 head-widths long .................... zonatus Jairajpuri & Loof, 1968 Odontostyle 18 wm*, 1.5- 1.6 head-widths long ... conicaudatus (Ditlevsen, 1927) Thorne, 1939

4. Odontostyle over 1.4 head-widths long ................................................5 5 Odontostyle about one head-width long ....................... brevidentatusThorne, 1939

5. Body cuticle marked by coarse transverse striations .................. striatus Thorne, 1939 Body cuticle without coarse transverse striations .......................................6

6. Tail somewhat digitate; body length 2.8 mm ....... faeroensis (Ditlevsen, 1928) Thorne, 1939 Tail not digitate; body length under 2.6 mm ...........................................7

7. Odontostyle over 40 tcmor more than 3 head-widths long ...............................8 8 Odontostyle 40 fLm orless,lessthan 2.5 head-widthslong ..............................10

8. Odontostyle length 40-46 odontophore as long as odontostyle......................... ..................................................... longidensJairajpuri & Loof, 1968 Odontostyle length over 50 tkm;odontophore less than the odontostyle length ..............9

9. Odontostyle 53-56 jumor 3.5-3.6 head-widths long .......................... maximus n. sp. Odontostyle 66-70 jumor 4.3 head-widths long ...................... nepalensisZullini, 1973

10. Odontostyle about 2 head-widths long ...............................................11 Odontostyle about 1.5 or less head-widths long .......................................12

11. Odontostyle length 23-24 odontophore without basal flanges .......................... .................................................... constrictusJairajpuri & Loof, 1968 Odontostyle length 25-30 jum; odontophore with prominent basal flanges ...... satendri n. sp.

12. Odontophore with basal flanges .......................................... thornei n. sp. Odontophore linear without basal flanges ............................................13

13. Body length 1.8-2.6 mm; female gonads with a peculiar ovoid chamber .................... ................................................ magnificus (Altherr,1952) Altherr, 1963 Body length 1.5 mm; peculiar ovoid chamber absent ................. arcuatus Thorne, 1939

14. Body length 0.59-0.79 mm ............................................ parvus Loof, 1971 Body length 1 mm or more .........................................................15

15. Body length 2.5 mm ......................... groenlandicus (Ditlevsen, 1927) Thorne, 1939 Body length under 2.0 mm ......................................................... 16

16. Odontostyle one head-width long .................................... laevisThorne, 1939 Odontostyle over one head-width long ...............................................17

17. Odontostyle 2 or more head-widths long ............................................. 18 Odontostyle less than 2 head-widths long .............................................22

18. Tail with 10-15 pairs of 'saccate bodies**'........... hopedorus (Thome, 1929) Thorne, 1939 Tail without 'saccate bodies'........................................................ 19

19. Odontostyle length 40 ¡.¿mor more ..................................................20 Odontostyle length less than 40 tcm ..................................................21

20. Body length 1.5- 1.6 mm; odontostyle 2.0-2.5 head-widths long ............................ .............................................. macrodorus (de Man, 1880)Thorne, 1939 Body length 1.09-1.24 mm; odontostyle 3 head-widths long ............. microdoroidesn . sp.

21. Odontostyle 25-27 ttm long ...................... altherri Vinciguerra & de Francisci, 1973 Odontostyle 30-35 am long ....................... analatus (Ditlevsen, 1927) Thorne,1939

22. Tail with 'saccate bodies'........................................................... 23 Tail without 'saccate bodies'........................................................ 24

23. Tail with 50 'saccate bodies'.......................................... teres Thorne, 1939 Tail with about a dozen 'saccate bodies'......................... vestibuliferAltherr, 1952

24. Lip region amalgamated, only slightly set off from the body contour ....................... .................................................. vesuvianus (Cobb, 1893)Thorne, 1939 Lip region not amalgamated, well set off from the body contour........................26

25. Lip region angular; vulva pre-equatorial (V = 46-48) ............. hopedoroidesAltherr, 1963 Lip region hemispheroidal; vulva post-equatorial (V = 50- 54) .............. parateres n. sp.

For synonymiesand departures under this genus see Zullini (1973).