Enchodelus decraemerae sp n. and Enchodorus dolichurus Vinciguerra, 1976 (Dorylaimida: Nordiidae), two rare species from Iran

摘要

A new species of Enchodelus is described in this study. It belongs to the group of species with very long odontostyle (61-67 mu m) and conical tail and is also characterised by having a 1.49-1.72 mm long body, 25-36 mu m long tail and presence of abundant males in the population with 45-52 mu m long spicules and 10-12 irregularly spaced ventromedian copulatory supplements. The new species is compared with E. maximus Bawl and Jairajpuri, 1974 and E. nepalensis Zullini, 1973, from which it differs from E. maximus by its shorter body (1.49-1.72 vs 2.48-2.60 mm), smaller a value (23.0-30.5 vs 41-45), longer odontostyle (61-67 vs 54-57 mu m), posteriorly located guiding ring (45-51 vs 35-36 mu m from anterior end), much shorter female tail (c' 0.9-1.3 vs about 2) and having functional males in population vs absence of males. It also can be differentiated from E. nepalensis by having shorter body (1.49-1.72 vs 2.1-2.3 mm), smaller b value (5.0-5.7 vs 6.4-6.5), shorter female tail (c' 0.9-1.3 vs 1.7) and by having 10-12 ventromedian copulatory supplements vs 5. Enchodorus dolichurus Vinciguerra, 1976, a rare species of a rare genus, found so far only in Italy, is also redescribed and illustrated for the first time from Iran.