''Haplopharynx'' is a genus of small, free living marine
flatworms found in the North Atlantic and the Mediterranean. It is the only genus in the
monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...
family Haplopharyngidae.
Species
The following species are recognized in the genus ''Haplopharynx'':
* ''
Haplopharynx quadristimulus
''Haplopharynx'' is a genus of small, free living marine flatworms found in the North Atlantic and the Mediterranean. It is the only genus in the monotypic family Haplopharyngidae.
Species
The following species are recognized in the genus ''Hap ...
''
Ax, 1971
* ''
Haplopharynx rostratus
''Haplopharynx'' is a genus of small, free living marine flatworms found in the North Atlantic and the Mediterranean. It is the only genus in the monotypic family Haplopharyngidae.
Species
The following species are recognized in the genus ''Ha ...
''
Meixner, 1938
* ''
Haplopharynx papii
''Haplopharynx'' is a genus of small, free living marine flatworms found in the North Atlantic and the Mediterranean. It is the only genus in the monotypic family Haplopharyngidae.
Species
The following species are recognized in the genus ''Ha ...
''
Schockaert, 2014
Anatomy
Subterminal mouth leads to the simple pharynx, which subsequently continues as an intestine with terminal anal pore. A short retractable proboscis is present anteriorly to the pharynx. Variable number of glands producing
rhabdites open at the surface of proboscis. Nervous system built similarly as in
Macrostomida
Macrostomidaevan Beneden, E. 1870. Étude zoologique et anatomique du genre ''Macrostomum'' comprenant la description de deux especes nouvelles. Bulletin de l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique 30:116-133, on ...
. ''Haplopharynx'' are hermaphroditic, with separate male and female gonopores. Male copulatory organ is equipped with hard, sclerotised stylet and set of needles.
Reproduction and development
Copulation lead to the internal fertilization. Egg is entolecithal and show spiral
cleavage pattern.
References
External links
Taxonomy Database
Turbellaria
Rhabditophora
Platyhelminthes genera
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