Discotylenchus, Rafiq Siddiqi, 1980

Mehrabian, Fatemeh, Azizi, Kourosh, Bazgir, Eadi & Darvishnia, Mostafa, 2017, Morphological and molecular characterisation of Discotylenchus lorestanensis sp. n. (Nematoda: Tylenchidae) from Iran, Zootaxa 4290 (1), pp. 167-176 : 174

Key to the species of Discotylenchus

1. Lateral field with two incisures...........................................................................2

- Lateral field with four incisures..........................................................................5

2. Stylet 8–9 µm........................................................................................3

- Stylet 6–8 µm........................................................................................4

3. Tail 63–78 µm....................................................................... D. lorestanensis sp. n. (L=449–566, Body width= 13–17, V= 63–71, c= 6.2–8.0, c'= 5.8–9.2, spermatheca lobed, basal bulb saccate to elongated)

- Tail 100–105 µm................................ ………………………………………………… D. azadkashmirensis (L=350–460, Body width= 9.5–10.5, V= 57–61, c= 3.5–4.6, c'= 3.5–4.6, spermatheca elongated, basal bulb elongated)

4. Tail 69–90 µm............................................................................ D. discolabialis (L=270–320, V= 56–61, a = 28–35, c'= 12–16, spermatheca rounded,)

- Tail 140–188 µm........................................................................... D. longicauda (L=480–550, V= 51–54, a= 43–53, c'= 20–29, spermatheca elongated,)

5. Tail 35–47 µm........................................................................... D. brevicaudatus (L=320–360, V= 71–73, c=8.1–9.8, c'= 4.5–6.0, tail terminus rounded)

- Tail 68–96 µm.............................................................................. D. attenuatus (L=330–400, V= 60–64, c= 4.1–5.0, c'= 9–12, tail terminus extremely thin)

- Tail 80–115 µm.............................................................................. D. discretus (L=440–610, V=63–67, c= 5.0–6.2, c'= 9–11, tail terminus thin)