Farranula gibbula
Giesbrecht (1891)
Download a fact sheet for Farranula gibbula (PDF 389KB)
Taxonomy
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Maxillopoda |
| Subclass | Copepoda |
| Order | Cyclopoida |
| Family | Corycaeidae |
| Genus | Farranula |
| Species | gibbula |
Size
- Female: 0.83 – 1.10 mm
- Male: 0.80 – 0.96 mm
Distinguishing characteristics
- Cuticular lenses
- Genital somite form
Male
- Very difficult to identify
- Usually determined from C. concinna by size, i.e. C. gibbula are bigger
Female
- 2 plumose or spiny setae at base of A2
- Prosome 2 segmented
- Prosome points < half genital somite
- Dorsal hump on second prosome segment
- Prosome 2.5 times longer than urosome
- Beak like keel on ventral surface
- P4 with no trace of endopod, 1 naked seta at the base
- Urosome 1 segmented
- Urosome somites 1.7 times as long as caudal rami
- The middle part of genital somite swollen, fattest part of somite is below the mid portion
- Genital somite with a lot of hairs on the proximal ventral part
- Caudal rami >3 times longer than wide
Distribution
Ecology
References
- Bradford-Grieve, J. M., E. L. Markhaseva, et al. (1999). Copepoda. South Atlantic Zooplankton. D. Boltovskoy. Leiden, The Netherlands, Backhuys Publishers. 1: 869-1098.
- Dahl, M. (1912). "Die Copepoden der Plankton-exhibition: I. Die Corycaeinen, mit berucksichtigen aller bekannten Arten."
- Tanaka, O. (1957). "On copepoda of the family Corycaeidae in Japanese waters." Journal of the Faculty of Agriculture, Kyushu University 11(1): 77-97.