Neotonchinae

Nara, Bezerra Tania, Ellen, Pape, Freija, Hauquier, Ann, Vanreusel & Jeroen, Ingels, 2013, New genus and two new species of the family Ethmolaimidae (Nematoda: Chromadorida), found in two different cold-seep environments, Zootaxa 3692 (1), pp. 7-27 : 11

Subfamily Neotonchinae Wieser & Hopper, 1966

Diagnosis. Ethmolaimidae (originally Cyatholaimidae ): buccal cavity elongate, depth greater than width; armed with very small to medium or large dorsal tooth located midway in the buccal cavity and with or without small subventral teeth. Cephalic sense organs 6+6+4. Pharynx with well-developed terminal bulb. Spicula of highly characteristic shape, proximal two-thirds fairly straight and nearly uniform thickness, distal third narrowed, cylindroid and with a slight S-shaped curvature. Precloacal supplements large, well-developed, cup-shaped. Tail plump, conoid, with bluntly rounded terminus.

Marine. (Platt, 1982; Lorenzen 1994) (Type genus: Neotonchus Cobb, 1933 )

Genera belonging to Neotonchinae : Comesa Gerlach, 1956 , Dystomanema gen. nov., Filitonchoides Jensen, 1985 , Filitonchus Platt, 1982 , Gomphionchus Platt, 1982 , Gomphionema Wieser & Hopper, 1966 , Nannolaimus Cobb, 1920 , and Neothonchus Cobb, 1933. ( Fig 3 )

Figures

FIGURE 3. Genera of the family Ethmolaimidae. Adapted from Warwick et. al. (1998), Jensen (1985, 1994). Subfamily Ethmolaiminae: A— Ethmolaimus, B— Paraethmolaimus; Subfamily Neotonchinae: C— Comesa, D— Dystomanema, E— Filitonchoides, F— Filitonchus, G— Gomphionchus, H— Gomphionema, I— Nannolaimus, J— Neotonchus.