Adult Newt Identification DescriptionTriturus cristatus Lissotriton vulgaris Lissotriton helveticus Size (snout to tail) LARGEST! Up to 16cm Up to 10cmUp to 9cm (often smaller) Colouring of dorsal side Almost black, granular appearance Brown Crest on maleJagged crest along the back, this dips at the rear of the abdomen with a second crest along the tail Continuous wavy crest along body and tail Very low continuous crest
DescriptionTriturus cristatusLissotriton vulgaris Lissotriton helveticus Belly colourOrange/yellow belly with irregular pattern of black dots Orange belly, roundish black spots Yellowish, sometimes has a few black spots ThroatSpeckling on throatSpeckled, whitish throat Plain pink or yellow FeetToes have yellow rings (striped appearance) In the breeding season, fringes of skin develop on the toes of the hind feet in males. Webbed hind feet almost black (like black gloves)
Most immature newts remain in terrestrial habitat but some great crested newts enter the water before reaching adult size Great Crested Newt: immatures
Egg Identification FeatureT. cristatusL. vulgarisL. helveticus ColourYellowish white Brownish grey/off grey SizeLength c. 4.5 mm Smaller than GCN c. 3mm Egg ShapeOvalRounder than GCN NB: Newly laid eggs (inside the jelly), will be round for all the species.
Newt Eggs: developing Newt eggs are harder to identify when larvae developing
Newt Larvae During the early developmental stages, newt larvae can be difficult to differentiate Newly-hatched great crested newt larva
Larvae Identification CharacteristicT. cristatusL.vulgaris & L. helveticus GillsOften curving forwards & outwards Straight to slightly incurved Tail ‘fins’White border Numerous black blotches No white border Sometimes fine black speckling TailTapers, filament at the tip Tapers, no filament
Larvae Identification CharacteristicT. cristatusL.vulgaris & L. helveticus FingersLong, thin fingersNo obvious long fingers EyeGolden Iris
Photographs Photographs used in this presentation are by Ben Driver, Chris Gleed-Owen, Fred Holmes, Phyl King, John Robinson, Will Watson and John Wilkinson Copyright of all photographs remains with the photographers and ARC. These photographs should not be used for purposes other than NARRS training without the permission of the photographers.