Discotylenchus discretus Siddiqi, 1980

Ghaemi, Razieh, Pourjam, Ebrahim, Atighi, Mohammad Reza, Pedram, Majid & Karssen, Gerrit, 2012, First record of the genus Discotylenchus Siddiqi, 1980 (Nematoda: Tylenchidae) from Iran, with description of one new and data on two known species, Zootaxa 3493, pp. 72-82 : 81

Discotylenchus discretus Siddiqi, 1980

( Figs 4 , 5 )

Measurements. See Table 3 .

This species was recovered from the rhizosphere of apple ( Malus domestica L. Borkh. ) trees in the city of Bojnourd, Northern Khorasan province, Iran, during July 2009. The morphological and morphometric characters (see Table 3 ) are in full agreement with those in original description. The Iranian population of D. discretus is characterized by having a smooth lip region, tapering to an offset, distinct labial disc, lateral field with four incisures, body length 0.54–0.60 mm, stylet 8–9 μm long, spermatheca round, filled with sperm and tail filiform, 102–112 μm long.

Figures

FIGURE 4. Discotylenchus discretus. A, B: Female and male entire body; C: Anterior end in detail; D: Male posterior end; E: Female tail; F: Female pharyngeal region.

FIGURE 5. Discotylenchus brevicaudatus (A – E) and Discotylenchus discretus (F – I). A: Anterior end; B: Female tail; C: Male posterior end; D: Bursa; E: Neck region showing bottle shaped terminal bulb; F: Anterior end; G: Vagina and spermatheca; H: Male posterior end; I: Female tail (all scale bars = 10 µm).