Belongs within: Plectida.
The Aphanolaimidae are a family of nematodes characterised by the distinctive structure of the ventral secretory-excretory gland (Holovachov et al. 2002).
Characters (Holovachov et al. 2002): Medium-sized nematodes. Cuticle annulated with narrow ridge-like lateral field. Lateral epidermal glands present, opening through prominent pores. Somatic setae present in male only. Four cephalic setiform sensilla. Amphid unispiral or derived therefrom, located on unstriated labial region. Stoma barrel-shaped or cylindrical, weakly or heavily sclerotised. Pharynx cylindrical. Cardia glandular. Secretory-excretory system well developed with large gland and cuticularised duct extending to lip region and opening into stoma. Female reproductive system didelphic, amphidelphic or monodelphic, prodelphic. Ovary branches reflexed antidromously. Each branch with two lateral sack-like spermathecae or spermathecae undeveloped. Vagina encircled by single sphincter muscle. Male reproductive system monorchic with outstretched glandular anterior part and reflexed functional posterior testis. Spicules paired and symmetrical. Gubernaculum present. Tubular supplements present. Alveolar supplements present or absent. Tail conical. Caudal glands present, opening via a spinneret on tail tip.
Aphanolaimidae
|--Anonchus Cobb 1913 (see below for synonymy)HZ02
| |--A. coomansi Eyualem 1996HZ02
| |--A. laureatus (Gerlach 1957) [=Assia laureata]HZ02
| |--A. maculatus (von Daday 1905) (see below for synonymy)HZ02
| |--A. mangrovi Gerlach 1957HZ02
| |--A. millelacunatus (Andrássy 1973) [=Haconnus millelacunatus]HZ02
| |--A. mirabilis (Hofmänner in Hofmänner & Menzel 1914) [=Bathylaimus mirabilis, Dadayia mirabilis]HZ02
| |--A. palaeotropicus Tsalolikhin 1989HZ02
| |--A. pulcher Zullini, Loof & Bongers 2002HZ02
| |--A. venezolanus Holovachov, Zullini et al. 2002HZ02
| `--A. winiszewskae Holovachov, Zullini et al. 2002HZ02
`--AphanolaiminaeHZ02
|--Aphanonchus Coomans & Raski 1990HZ02
| `--A. intermedius Coomans & Raski 1991HZ02
|--Paraphanolaimus Micoletzky 1922HZ02
| |--P. anisitsi (von Daday 1905)HZ02
| |--P. behningi Micoletzky 1923HZ02
| |--P. embryonophorus (Alekseev & Naumova 1977)HZ02
| |--P. latescens Raski & Coomans 1991HZ02
| |--P. tahoensis Raski & Coomans 1991HZ02
| `--P. terrestris Raski & Coomans 1991HZ02
`--Aphanolaimus de Man 1880HZ02
|--A. aymarae de Waele & Coomans 1993HZ02
|--A. chilensis Raski & Coomans 1990HZ02
|--A. elegans Raski & Coomans 1990HZ02
|--A. fuegoensis Raski & Coomans 1990HZ02
|--A. spiriferus Cobb 1914HZ02
|--A. tudoranceai Zullini 1988HZ02
`--A. yamani Raski & Coomans 1990HZ02
Anonchus Cobb 1913 [incl. Assia Gerlach 1957, Dadayia Micoletzky 1922, Haconnus Andrássy 1973, Pseudobathylaimus Filipjev 1918; Anonchinae]HZ02
Anonchus maculatus (von Daday 1905) [=Bathylaimus maculatus, Dadayia maculata, Pseudobathylaimus maculatus; incl. A. monohystera Cobb 1913]HZ02
*Type species of generic name indicated
References
[HZ02] Holovachov, O., A. Zullini, P. A. A. Loof & T. Bongers. 2002. Morphology and systematics of the genus Anonchus Cobb, 1913 (Nematoda: Leptolaimina) and reappraisal of the family Aphanolaimidae Chitwood, 1936 n. rank. Nematology 4 (6): 725–757.