Description of four new species and two populations of Rotylenchus (Nematoda: Hoplolaimidae)

Abstract

Four new species and two populations of Rotylenehus are described and figured. R. aquatleus sp, n. is characterized by an annulated, rounded and set off lip region; it is differentiated from R. robustus, R. unz/ormis, R. buxophilus, R. eximius, R. rugatoeutieulatus and R. asealpi by the number of head annules and by striations on head and body annules, R. helenae sp, n. is characterized by a lip region offset, truncated, bearing 3-4 annules; it is differentiated from R. usitatus; R. geraerti, R. alius and R. eapsieumi by the number of lip annules, the spear and body size and by the longitudinal striations on body. R. ineognitus sp. n. is characterized by a rounded and set off lip region bearing 8-10 annules; it is differentiated from R. quartus, R. pruni, R. eatharinae, R. ivanovae and R. microstriatus by the number of head annules, the longitudinal striations on the body annules and by the body and stylet size, R landii sp. n. is characterized by a conoid, rounded and set off lip region with 5-6 annules; it is distinguished from R. robustus, R. cap en sis, R. asealpi and R. proveneialis by the areolation of lateral field and by striations on head and body annules. R. pumilus (Perry et al., 1959) Sher, 1961 and R. cypriensis Antoniou, 1980 are also reported.