Oncaea waldemari
Bersano & Boxshall (1996)
Download a fact sheet for Oncaea waldemari (PDF 313KB)
Taxonomy
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Class | Maxillopoda |
| Subclass | Copepoda |
| Order | Poecilostomatoidae |
| Family | Oncaeidae |
| Genus | Oncaea |
| Species | waldemari |
Size
- Female: 0.42 – 0.50 mm
- Male: 0.34 – 0.36 mm
Distinguishing characteristics
- Size
- Proportional lengths of urosome somites
- Lack of sclerotization between genital apertures
Male
- Caudal rami about 1.4 times longer than wide, shorter than female
Female
- Exoskeleton well chitinized
- Prosome 2.7 times length of urosome, (excluding caudal rami) or 2.3 times (including caudal rami)
- P2 bearing somite without dorso-posterior projection
- Genital double somite 1.7 times as long as max width, & 1.7 times as long as postgenital somites combined
- Anal somite shorter than caudal rami
- Caudal ramus about 2.3 times as long as wide
Distribution
Ecology
References
- Heron, G. A. and J. M. Bradford-Grieve (1995). "The marine faunaof New Zealand: Pelagic Copepoda: Poecilostomatoida: Oncaeidae." New Zealand Oceanographic Institute Memoir 104.
- Bottger-Schnack, R. (2001). "Taxonomy of Oncaeidae (Copepoda, Poecilostomatoida) from the Red Sea. II. Seven species of Oncaea s.str." Bulletin of Natural History Museum 67(1): 25-84.