Characteristics
apex of lips ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) partially fused (three lips) not fused fused
buccal cavity armature ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) 18 - with three teeth 37 - denticulate 16 - with small denticle at base of buccal cavity
buccal cavity shape ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) subdivided (pharyngostom) in two parts non-divided, V-shaped
cheilostome weakly sclerotized and small ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
copulatory bursa ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
cristalloid bodies ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
gubernaculum slipper shaped ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
gubernaculum without apophyse ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
inner labial sensillae papilliform ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
ocelli ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
ovary reflexed ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
peri-oral plates ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
pharyngeal lumen sclerotized ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
pharynx with posterior bulbus ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
protrusion of the labial cuticle surrounding the inner labial sensilla ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
rectum well developed ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
small oral aperture, posterior buccal cavity part tube-like ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
somatic setae (length < 30% of the cbd) ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
spicules ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) arcuate and robust long none of the above
spinneret shape ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) with a hyaline plug-like structure long
strong sexual dimorphism in shape of amphidial fovea and buccal cavity ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
tail shape ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) long and filiform with swollen tip conoid none of the above
two lateral setae posterior to the amphidial fovea ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
vagina sclerotized ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
ventral gland opening at anterior neck region ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
ventral gland well developed ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
vulva close to the anus (V% = 75) ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
well developed postcloacal genital papillae ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
well developed second chamber of buccal cavity ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent
well sclerotized cheilostome (except in Monhystrella), weakly or nonsclerotized second chamber ![Pictorial key](https://www.marinespecies.org/aphia/images/idkeys/camera1.gif) present absent | Remaining taxa: Anguimonhystera Andrássy, 1981
Cryonema Tchesunov & Riemann, 1995
Diplolaimella Allgén, 1929
Diplolaimelloides Meyl, 1954
Eumonhystera Andrássy, 1981
Gammarinema Kinne & Gerlach, 1953
Geomonhystera Andrássy, 1981
Halomonhystera Andrássy, 2006
Hieminema Tchesunov & Portnova, 2005
Monhystera Bastian, 1865
Monhystrella Cobb, 1918
Odontobius Roussel del Vauzème, 1834
Sinanema Andrássy, 1960
Thalassomonhystera Jacobs, 1987
|