Description of Ruehmaphelenchus asiaticus sp. n. (Nematoda: Aphelenchoididae) and remarks on the genus Ruehmaphelenchus

Jaen

2006

S. 39-48

Bandaufführung

9924S

135351

Ruehmaphelenchus asiaticus sp. n. isolated from wood (Sterculariaceae) imported from the Republic of Korea to China is described. It is characterized by its bodv length of 737 (571-817) μm and 778 (710-888) μm of males and females, respectively; robust body (a = 29 and 25 ot males and females, respectively); stylet 14,0 and 15,5 μ long for males and females, respectively; lateral field with three lines; mean value of vulva position 81%; long postuterine branch; female tail a ventral flange, a pointed rostrum and the apex elongate and extending the line of the dorsal limb; male tail bluntly convex-conoid in shape and with a short claw-like hyaline process; three pairs ot ventro-sublateral papillae (one pair preanal, two pairs postanal) and a single preanal papilla present; and bursa absent The new species is the second known species of the genus. It can be distinguished from R. martinii by the round medium bulb, the different shape of the male tail (vs lacking the spike-like process) and the different shape of spicules The characters used for definition of the genus are discussed. ITS-RFLP patterns of R. asiaticus sp. n. and sequencing results are shown.