Family Neotonchidae

Revised 03/22/23

Classification:

Nematoda

Chromadorea

Chromadoria

Chromadorida

Chromadorina

Chromadoroidea

Neotonchidae Wieser and Hopper, 1966

free-living marine nematodes

Sometimes considered a subfamily of Ethmolaimidae Filipjev and Schuurmans Stekhoven, 1941

Ethmolaimidae: are primarily genera of fresh and brackish water.

Neotonchidae - are nematodes of marine sediments.

Type genus of the family: Neotonchus Cobb, 1933.

Family Characteristics:

• Cuticle striated with transverse rows of punctations
• Cephalic sensilla arrangement in 3 circles of 6+6+4 (inner and outer labial (six each)  are papilliform and cephalc (four) are setiform.
• Amphid multispiral wuith more than 3 turns.
• Buccal cavity with large dorsal tooth, with or without subventral teeth.
• Esophagus with muscular posterior bulb
• Tail usually conical with rounded tip.
• Male diorchic with cup-shaped precloacal supplements.
• Reported worldwide.

Ref: Bezerra et al., 2013; Tchesunov, 2013

References:

Bezerra, T.N., Pape, E., Hauquier, F., Vanreusel, A., Ingels, J. 2013. New genus and two new species of the family Ethmolaimidae (Nematoda: Chromadorida), found in two different cold-seep environments. Zootaxa 3692 DOI: http://dx.doi.org/10.11646/zootaxa.3692.1.4

Tchesunov, A.V.. 2013. 7.12 Order Chromadorida Chitwood, 1933 In Schmidt-Rheas and de Gruyter, W. Handbook of Zoology.Gastrocticha, Cycloneuralia, Gnatifera. Volume 2: Nematoda

Return to Neotonchidae Menu

Return to Ethmolaimidae Menu        

Return to Chromadorida Menu

 Want more information about nematodes? Go to Nemaplex Main Menu.