Issoca | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Platyhelminthes |
Order: | Tricladida |
Family: | Geoplanidae |
Subfamily: | Geoplaninae |
Genus: | Issoca Froehlich, 1955 |
Type species | |
Geoplana rezendei Schirch, 1929
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Issoca is a genus of land planarians from Brazil.
Species of the genus Issoca are characterized by the presence of a spoon-shaped head having a cephalic retractor muscle, which allows those animals to pull their anterior end upwards and backwards. Associated to the muscle are cephalic glands, forming a so-called cephalic musculo-glandular organ in a way similar to the one found in the genera Choeradoplana and Luteostriata. The copulatory apparatus usually lacks a permanent penis papilla, i. e., the penis is formed during copulation by folds in the male cavity which are pushed outwards.[1][2]
The name Issoca comes from Tupi içoca (worm, maggot).
There are five described species in the genus Issoca: