A Third New Species of Aporcelinus (Dorylaimida, Aporcelaimidae) from Vietnam, with the First SEM Study of a Representative of the Genus.

Thi Anh Duong Nguyen,Michael Bonkowski,Joaquín Abolafia,Reyes Pena-Santiago

doi:10.21307/jofnem-2017-015

Thi Anh Duong Nguyen, Michael Bonkowski + Show 2 more

Open Access

https://doi.org/10.21307/jofnem-2017-015

Copy DOI

Abstract

A new species, the third one from Vietnam, of the genus Aporcelinus is described from natural areas. Aporcelinus falcicaudatus sp. n. is characterized by its 1.28 to 1.63 mm long body, lip region offset by weak constriction and 16 to 18 µm broad, odontostyle 18 to 21 µm at its ventral side, neck 354 to 406 µm long, uterus tripartite and 61 to 95 µm long, V = 50 to 55, tail strongly recurved dorsad and conical (23-31 µm, c = 43-58, c' = 0.7-0.9) with finely rounded tip, and male absent. Scanning electron microscope (SEM) study, the first of a representative of the genus, shows a lip region pattern significantly different from that observed in the typical aporcelaimid taxa.

Highlights

A new species, the third one from Vietnam, of the genus Aporcelinus is described from natural areas
The genus Aporcelinus Andrassy, 2009 is a worldwide distributed, free-living nematode taxon, mainly dwelling soils of both natural and agricultural habitats and, more exceptionally, freshwater sediments too. It hitherto contains 18 valid species, but many of them certainly remain to be discovered. This is the second contribution in a short series devoted to studying the abundant material of this genus collected in Vietnam, the first one (Nguyen et al, 2016) focused on the description of two new species, namely Aporcelinus paramamillatus and Aporcelinus paraseychellensis
Light microscopy: Measurements, line drawings, and pictures were taken using a Nikon Eclipse 80i light microscope provided with differential interference contrast optics, a Nikon Digital Sight DS-U1 camera and a drawing tube

Summary

Introduction

A new species, the third one from Vietnam, of the genus Aporcelinus is described from natural areas. The authors thank the director of Cat Ba National Park (Hai Phong) for issuing relevant permit to collect soil samples and the assistance of Research Technical Services of University of Jaen (Spain) for the SEM study.

Results

Conclusion