Lacerta bilineata
The western green lizard, scientifically known as Lacerta bilineata, is a vibrant green reptile characterized by its territorial nature and a distinct sexual dimorphism where males possess larger heads and often a blue throat. Found across various European temperate habitats, this lizard primarily feeds on arthropods and has an average lifespan of about 15 years.
Key Facts
- ›The western green lizard's genus and species names, Lacerta bilineata, are Latin for 'lizard' and 'with two lines', referencing the pale flank lines on young individuals.
- ›Adults typically reach an average length of 13 cm (excluding tail), with the tail potentially being twice the body length.
- ›Males are distinguished by larger heads and frequently a blue throat, while juveniles are brown with yellowish bellies and pale longitudinal lines.
- ›These lizards are territorial and exhibit aggressive behavior towards rivals, especially during the mating season.
- ›Females lay between 6 to 25 eggs in warm, humid locations, such as decomposing logs.
- ›Their diet consists mainly of arthropods, including large insects, isopods, and spiders.
Western Green Lizard
Andorra, Croatia, France, Germany, Italy, Monaco, Serbia, Slovenia, Spain, Switzerland, Guernsey, Jersey, United States, United Kingdom
Temperate Forest, Woodland Edges, Shrubland, Open Grassland, Arable Land, Pastureland, Green Humid Areas
- Average Body Length Is About 13 cm, With A Maximum of 40 cm Including Tail.
- Tail Can Reach Up To Twice the Body Length.
- Average Weight Is Approximately 35 Grams.
- Body Is Bright Green.
- Males Have Larger Heads Than Females and Often Display A Blue Throat.
- Juveniles Are Mostly Brown With A Yellowish Belly and Two To Four Pale, Longitudinal Lines On the Flanks.
- Sub-Adults Retain Flank Lines and May Have Small Brown Spots On Their Backs.
Arthropods, Large Insects, Isopods, Spiders
- Territorial Animals
- Males Fight Rivals, Especially During Mating Season.
- Mating Ritual Involves Specific Behaviors, Including Biting the Female's Tail Base.
- Aggressive Towards Rivals During Mating Period.
Habitat Loss
About Lacerta bilineata
Western Green Lizard (Lacerta bilineata)
The western green lizard, scientifically classified as Lacerta bilineata, is a striking reptile belonging to the Lacertidae family. Its common name and scientific designation, derived from Latin, reflect its characteristic bright green coloration and the pale longitudinal lines that adorn the flanks of its younger individuals. This species is known for its territorial nature and displays notable sexual dimorphism, with males typically exhibiting larger heads and a distinctive blue throat, while females and juveniles are more uniformly colored.
Distribution and Habitat
Lacerta bilineata is native to a wide range of European countries, including France, Spain, Italy, and Germany, extending to parts of the Balkans and the Channel Islands. Introduced populations have also been established in the United States and the United Kingdom. The lizard's preferred habitats are varied, encompassing green and humid areas such as temperate forests, woodland edges, shrublands, open grasslands, and agricultural lands like arable fields and pastures. However, habitat loss poses a significant threat to its populations.
Biology and Behavior
Adult western green lizards reach an average body length of about 13 centimeters, excluding their tail, which can extend to twice the body length, bringing the total length to around 40 centimeters. These lizards are primarily insectivores, feeding on a diet of arthropods including large insects, isopods, and spiders. They are territorial animals, and males can become quite aggressive towards rivals, especially during the mating season. The mating ritual is specific, often beginning with a bite to the female's tail base. Females lay between 6 to 25 eggs in warm, humid locations, such as decomposing logs. The average lifespan for Lacerta bilineata is approximately 15 years, with individuals reaching sexual maturity around two years of age.
Source: Wikipedia ↗
Frequently Asked Questions
What does the name Lacerta bilineata mean?
The genus name 'Lacerta' is Latin for 'lizard'. The species name 'bilineata' is also Latin, meaning 'with two lines', which refers to the pale lines seen on the flanks of young individuals.
What is the typical size of a western green lizard?
Western green lizards reach an average body length, excluding the tail, of about 13 centimeters. However, their total length can extend up to 40 centimeters when including the tail, which can be up to twice the length of the body.
How do male and female western green lizards differ?
There are noticeable differences, particularly in size and coloration. Males typically have larger heads than females and often display a blue throat, a feature not seen in females. Juveniles, regardless of sex, are generally brown with pale lines.
What kind of habitat does Lacerta bilineata prefer?
This species thrives in green, humid environments. Their preferred habitats include temperate forests, woodland edges, shrublands, open grasslands, cultivated land, and pasturelands.
What do western green lizards eat?
The diet of Lacerta bilineata primarily consists of arthropods. This includes a variety of prey such as large insects, isopods, and spiders.
What is the lifespan of the western green lizard?
The average lifespan for this species is approximately 15 years. They typically attain sexual maturity around two years of age.
Are western green lizards aggressive?
Yes, they are territorial animals and can be quite aggressive, especially males towards rivals during the mating period. The mating ritual itself involves specific behaviors, including a bite to the female's tail.
Where are western green lizards found?
Lacerta bilineata is native to several European countries including Andorra, Croatia, France, Germany, Italy, Monaco, Serbia, Slovenia, Spain, and Switzerland. They are also found on the Channel Islands of Guernsey and Jersey. Introduced colonies exist in the United States and on the south coast of the UK.
Related Lizards
Western green lizard
The Western green lizard (Lacerta bilineata) is a striking reptile known for its bright green coloration, particularly in adult males who often display a blue throat. Juveniles are typically brown with pale lines along their flanks. This territorial species inhabits various humid environments across Europe and is known to feed on arthropods.
Diplodactylus conspicillatus
The variable fat-tailed gecko (Diplodactylus conspicillatus) is a small to medium-sized lizard endemic to arid and semi-arid regions of Australia. Characterized by its stout body, short limbs, and a broad, flat tail, it typically displays a fawn to reddish-brown coloration with a reticulated pattern and pale speckles. This nocturnal insectivore primarily feeds on termites and is known for its unique burrow-plugging behavior, though much of its ecology remains under-researched.
Teira dugesii
The Madeiran wall lizard (Teira dugesii) is a common species endemic to the Madeira Archipelago, Portugal, notable for its variable coloration that often camouflages it with its surroundings. It inhabits a wide range of environments, from coastal areas to altitudes of 1,850 meters, and has also become naturalized in the Azores. This lizard is characterized by its small size, easily shed tail, and insectivorous-herbivorous diet.