Originally native to the Mediterranean Basin and parts of western Asia including the Middle East and northeastern Africa, Hemidactylus turcicus has now established populations well beyond its native range. In the United States, it is primarily found in the southern states, including widespread areas of Texas, Arizona, Florida, and Southern California, as well as portions of the Southeast and Southwest. It has also been introduced into Mexico, various Caribbean islands, and parts of Central and South America, thriving particularly in urban settings.
This species thrives in urbanized environments and is often found in warm climate regions. In its introduced range, it is commonly seen in and around buildings—especially on walls, window screens, and under eaves—where it takes advantage of artificial lighting to hunt insects. Although most common around human structures, it may also inhabit crevices in rocks, tree bark, or under vegetation like palm fronds. In Arizona, it occupies habitats within the warm desertscrub and Semidesert Grassland communities.
Mediterranean House Geckos are nocturnal and highly adapted to life in close proximity to humans. They climb smooth surfaces using their specialized toe pads and can even scale ceilings with ease. A familiar nighttime sight near porch lights, they remain motionless or slowly stalk insects drawn to the glow. When threatened, they can emit a distinctive squeak, and males produce a clicking sound during mating season as a territorial or courtship call. Their elusive and quiet daytime nature contributes to their stealthy presence in many environments.
Primarily insectivorous, H. turcicus feeds on a variety of small arthropods, including moths, flies, ants, and beetles—many of which are drawn to artificial lighting at night. Their sit-and-wait hunting strategy near light sources makes them efficient urban predators.
In warmer climates like Arizona, breeding can potentially occur year-round. Females typically lay up to three clutches per year, each consisting of one or two rigid, calcareous eggs. Communal nesting is common, with multiple females depositing eggs in shared, sheltered locations such as crevices or under debris. Eggs are often visible through the translucent abdominal skin of gravid females. Hatching success is likely enhanced by the stable, warm microhabitats found around human dwellings.
Though not native to the Americas, the Mediterranean House Gecko has adapted remarkably well to introduced regions, often benefitting from human-mediated dispersal. Its expansion is likely aided by accidental transport of eggs in nursery plants, construction materials, and other cargo. Despite its non-native status, it is not currently considered invasive in most areas, though it competes with native species for food and habitat. Its ability to rapidly colonize new areas has made it a common fixture of urban nightscapes across multiple continents.
