Abstract
The new genus and species Campydoroides manautei Holovachov gen. et sp. nov. is placed in the suborder Campydorina and is characterised by a transversely striated cuticle without lateral alae, body pores or epidermal glands; somatic sensilla only on pharyngeal region and on tail; a truncate labial region with papilliform inner labial, outer labial and cephalic sensilla; a stirrup-shaped amphid with transverse slit-like opening; a conoid stoma with strongly cuticularised walls and large protrusible dorsal tooth; a cylindrical pharynx with distinct basal bulb but without valves; a large ovoid cardia; didelphic, amphidelphic female gonads with antidromously reflexed ovaries and without spermatheca; a transverse vulva; a straight vagina without pars refringens vaginae or epiptygmata; an elongate tail with caudal glands and spinneret. The new genus is similar to the genera Campydora Cobb, 1920 and Udonchus Cobb, 1913 in having papilliform labial and cephalic sensilla, a stirrup-shaped amphid with a transverse slit-like opening, a stoma with a well-developed protrusible dorsal tooth, and a muscular pharynx with a strongly developed basal bulb, but can be easily separated from both in details of a stoma morphology. The systematics of the suborder Campydorina is revised. Halirhabdolaimus Siddiqi, 2012 is synonymised with Syringolaimus de Man, 1888.
Highlights
Due to the remarkable geological history of New Caledonia, the flora and fauna of the archipelago has a high proportion of endemism, which has attracted the attention of taxonomists and biogeographers (Grandcolas et al 2008)
Overall morphology of the anterior end is similar to that found in the members of the order Mononchida Jairajpuri, 1969 (Peña-Santiago 2014)
The genus Halirhabdolaimus was proposed by Siddiqi (2012) for a single species, Syringolaimus loofi, and was only compared with the genus Rhabdolaimus
Summary
Due to the remarkable geological history of New Caledonia, the flora and fauna of the archipelago has a high proportion of endemism, which has attracted the attention of taxonomists and biogeographers (Grandcolas et al 2008). This paper is the first in a series describing new nematode taxa found during these sampling trips
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