Pointed-head water flea
| Pointed-head water flea | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Daphnia cristata | ||||||||||||
| Sars , 1861 |
The pointed head water flea ( Daphnia cristata ) is a species from the genus Daphnia ( Daphnia ).
Females are up to 1.5 millimeters long. The body is glass-like and transparent and strongly flattened on the sides. The head armor is pulled back into a corner. There is no nauplius eye . The rostrum is long and pointed. The antennae of the first antennae extend far beyond the tip of the rostrum . The head is very changeable. The tail spine is always thin and long. The compound eye is small.
Daphnia cristata occurs east of the Vistula and in southern Sweden.
supporting documents
- Heinz Streble , Dieter Krauter : Life in a drop of water. Microflora and microfauna of freshwater. An identification book. Franckh-Kosmos Verlag, Stuttgart 2008, ISBN 978-3-440-11966-2 .