|Synonym: Monohystera of de Man and others
Tachyhodites Bastian, 1865
Theristus Bastian, 1865 (in part)
(Oligomonohystera) Micoletzky, 1922
Diplohystera Onorato-de Cillis, 1928 [1917 nomen nudum]
Allomonhystera Micoletzky, 1923
GEN. CHAR. Body mostly tapering considerably posteriorly.
sucker small, somewhat pointed. Integument unstriated;
setae very few; lateral circular mark on either side near anterior extremity.
Pharyngeal cavity none. Oesophagus uniform, cylindrical.
Intestinal cells not tessellated. Vulva about posterior
third of body. Uterus unsymmetrical. Viviparous or
oviparous. Spicules long and narrow. Accessory piece, when
present, single, small. Ocellus single, often absent.
In all probability, the two species which I have named M. disjuncta
and M. ambigua will hereafter be found to belong to a distinct genus;
but, not having seen the females of either, I was unwilling to describe
them apart, and have therefore placed them temporarily in that genus to
which they seemed to be the most nearly allied.
(Description- Bastian, 1865)
Definition: Monhysterinae. Cuticle plain or with
transverse striae, generally with bristles or setae, irregularly distributed
or in submedian rows. Amphids generally circular. Head not
offset and with indistinct lips but with setae. Stoma shallow and
small, usually unarmed, thin-walled and leading into funnel-shaped
beginning of oesophagus. Latter cylindrical or nearly so. Between
oesophagus and beginning of intestine a cone-like group of gland cells.
Ocelli may be present in aquatic forms. Ovary usually single, anterior,
outstretched. Testis single, outstretched. Spicules paired,
gubernaculum often with a posterior process. Caudal glands present
in tapering tail, terminal duct present. Several species in which
female only is known. The genus is represented in marine, freshwater
and soil forms.
Type Species: Monhystera stagnalis Bastian, 1865
Species found: at: