Observations on paratypes of Amplimerlinius Siddiqi, 1976 species confirm the transference of A. clavicaudatus (Choi & Geraert, 1975) Siddiqi, 1976 to Paramerlinius Sturhan, 2012

摘要

SummaryMorphological observations were made on paratypes and populations of 11 species of Amplimerlinius, including A. amplus, A. clavicaudatus, A. globigerus, A. icarus, A. intermedius, A. macrurus, A. magnistylus, A. nectolineatus, A. paraglobigerus, A. siddiqii, and A. uramanatiensis, deposited in various international nematode collections. Results showed that A. clavicaudatus differs from other Amplimerlinius species by having four lateral incisures at the deirid level, the tail terminus has a refractive inner cuticle layer, and there is a less thickened hyaline region at the tail terminus. As the latter species shares its main morphological characteristics with Paramerlinius, it is proposed herein to transfer this species to Paramerlinius as P. clavicaudatus n. comb. (=?A. clavicaudatus).