| Issoca | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Order: | Tricladida |
| Family: | Geoplanidae |
| Subfamily: | Geoplaninae |
| Genus: | Issoca Froehlich, 1955 |
| Type species | |
| Geoplana rezendei Schirch, 1929 | |
Issoca is a genus of land planarians from Brazil.
Description
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]
Etymology
The name Issoca comes from Tupi içoca (worm, maggot).
Species
There are five described species in the genus Issoca:
- Issoca assanga Araujo & Carbayo, 2018
- Issoca jandaia Froehlich, 1955
- Issoca piranga Froehlich, 1955
- Issoca potyra Froehlich, 1957
- Issoca rezendei (Schirch, 1929)
- Issoca spatulata (Graff, 1899)
References
- ↑ Froehlich, C. G. (1955). Sobre Morfologia e Taxonomia das Geoplanidae. Boletim da Faculdade de Filosofia, Ciências e Letras da Universidade de São Paulo, Série Zoologia. 19: 195-279.
- ↑ Carbayo, F. (2010). A new genus for seven Brazilian land planarian species, split off from Notogynaphalia (Platyhelminthes, Tricladida). Belgian Journal of Zoology. 140: 91-101.
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