معرفی گونه جدیدی از جنس (Rhabditida: Ektaphelenchinae) Devibursaphelenchus Kakulia, 1967 از ایران

A popuation of the genus Devibursaphelenchus was collected from the inner part of the decaying Persian oak tree (Quercus brantii) from Lordegan city Chahar Mahal va Bakhtiari province. This population with Females to length 767-1025.5 μm, lip region separated from the rest of body, Uncertainty of the number of lines on lateral fields, Stylet with a length of (19-22.5 µm), lacking basal knobs or swellings, excretory pore posterior to base of metacarpus, postuterine sac 36-66 µm (1.3-3.7 times the vulval body width), absence or vestigial of rectum and anus, posterior end of the body sub-cylindrical with rounded tip, in some specimens with a breast-like protrusion, Males with 677 to 814 µm long, the presence of two pair of caudal papillae (P2 and P3), spicule length (arc) 15-17 µm with rounded condyles and rostrum and small bursa flap at the tail end are described. So far, seven valid species of the genus Devibursaphelenchus described: D. alinae Kanzaki, Hamaguchi & Takeuchi-kaneko, 2021, D. eproctatus (Sriwati, Kanzaki, Plan & Futai, 2008) Braasch, 2009, D. hunanensis (Yin, Fang & Tarjan, 1988) Braasch, 2009, D. kheirii Aliramaji et al., 2014, D. lini Braasch, 2004, D. typographi Kakuliva, 1967 and D. wangi Gu, Wang & Zeng, 2010. The new species was compared with all species of the genus, that by absence or vestigial anus and rectum, sub-cylindrical posterior body, position of excretory pore, and small bursa at the end of the male tail are distinguishable from other species. The molecular phylogenetic relationship was reconstructed using part of the genomic region sequences of the large ribosomal subunit (LSU D2-D3 rDNA).