Longidorus kheirii n. sp. (Nematoda: Longidoridae) from Iran

Abstract

Longidorus kheirii n. sp., a parthenogenetic species, was found in soil samples collected from the rhizosphere of Rosa sp. growing in a natural mountainous region close to Maragheh city, northwestern Iran. It is characterised by having a long body (6.7-9 mm), a 19.5-23 mum wide head continuous with the body contour, a truncate and slightly concave lip region with convex sides between the anterior end and the guide-ring, an odontostyle 113-130 mum long, an odontophore 69-97.5 mum long, a body width of 90.5-117.5 mum at the mid-body, a long, wide oesophageal bulb (149.5-193.5 x 39.5-48 mum), a tail length of 47-72 mum, a male with 11 ventromedian supplements and spicules of 85 mum in length, and four juvenile stages. The ribosomal 18S rDNA gene of L. kheirii n. sp., L. leptocephalus Hooper, 1961, L. profundorum Hooper, 1966 L. euonymus Mali & Hooper, 1973 and two unidentified species listed as Longidorus sp. 1 and Longidorus sp. 2, all recovered from northwestern Iran in the same survey, and the ITS1 of L. kheirii n. sp. and Longidorus sp. 1 were sequenced in order to investigate the phylogenetic relationships with other previously sequenced Longidorus species.

Description of Longidorus cholevae sp. n. (Nematoda, Dorylaimida) from a riparian habitat in the Rila Mountains, Bulgaria

“…Longidorus kheirii by females having differently shaped lip region (rounded vs slightly concave), higher c value (171.2–220.4 vs 119–167.8), smaller pharyngeal bulb (114.5–146.5 × 30–38 vs 149.5–193.5 × 39.5–48 μm), males abundant, functional vs rare and not functional, differently shaped tail of the first stage juvenile as well as different morphometrics concerning the main characters such as body and tail length, functional and replacement odontostyle length (Table 1; Table 2 in Pedram et al 2008). …”

Molecular and morphological characterisation of Paralongidorus iranicus n. sp. and P. bikanerensis (Lal & Mathur, 1987) Siddiqi, Baujard & Mounport, 1993 (Nematoda: Longidoridae) from Iran

“…During 2008-2010, several extensive studies on systematics of Longidoridae were performed in Iran (Pedram et al, 2008a(Pedram et al, , b, 2009(Pedram et al, , 2012Niknam et al, 2010). All identified species belonged to Longidorus and Xiphinema and hitherto no population of Paralongidorus was found.…”

Longidorus carniolensis sp. n. (Nematoda, Longidoridae) from vineyard soil in Slovenia

“…Both structures were reported also for Longidorus fursti (Heyns et al 1987), Longidorus iranicus (Sturhan and Barooti 1983); only hemizonid – for Longidorus litchii , Longidorus henanus (Xu and Cheng 1992). Longidorus carpetanensis Arias, Fé Andres & Navas, 1986, Longidorus pawneensis Luc & Coomans, 1988, Longidorus brevis Swart et al, 1996, Longidorus africanus (Bravo and Roca 1995), Longidorus kheirii (Pedram et al 2008), Longidorus laevicapitatus Williams, 1959 (Heyns and Luc 1987), in a few specimens of Longidorus fagi Peneva, Choleva & Nedelchev, 1997, for one Xiphidorus and some Paralongidorus species (Siddiqi et al 1963, Fisher 1964, Luc and Doucet 1984). …”

“…Longidorus kheirii – by itslonger odontostyle (136–157 vs 111–130 μm); different tail shape in J1 (bluntly conoidal vs mucronated); males abundant vs males rare; longer spicules (122–145 vs 80 μm) (Pedram et al 2008);…”