Tropical house gecko

The tropical house gecko, Afro-American house gecko or cosmopolitan house gecko (Hemidactylus mabouia) is a species of house gecko native to sub-Saharan Africa. It is also currently found in North, Central and South America and the Caribbean, where it has been inadvertently introduced by humans.

Description
Tropical house geckos are small lizards, having an average total length of 10-12.7 cm (3.9-5 in) and an average mass of 4.6 g (0.16 oz). Females are on average somewhat larger than males, with the male snout-vent length being 51.56 mm (2 in) and the female snout-vent length being 54.47 mm (2.1 in). While normally colored in black and brown bands, these geckos can slowly change their color based on their ambient temperature and lighting; their scales vary in color from dark brown to light grey. Tropical house geckos bear particularly scaley lamellae on their toes, enabling grip onto vertical surfaces.

Diet
Its diet is varied, and includes animals such as isopods, centipedes, spiders, scorpions, cockroaches, beetles, moths, flies, mosquitoes, snails, slugs, frogs, anoles, other geckos and blind snakes, with the most important element being Orthoptera species.

Vocalization
As with many gecko species, it has the ability to vocalize. Its vocalizations range from quiet peeps to rapid short squeaking sounds. They may be heard most easily on a quiet night when they are sitting near an open window.

Habitat
The tropical house gecko can be found predominantly in urban locations.

Behavior
Tropical house geckos are mainly nocturnal and are voracious hunters of nocturnal flying and crawling insects. They have learned to wait near outside wall-mounted lighting fixtures so as to catch the insects that are drawn to the light.

Human impact
In some Caribbean cultures it is considered good luck to have a tropical house gecko residing in one's home, and certainly they do eat a lot of household insect pests. However, the feces of the tropical house gecko are approximately 5 mm long, 2 mm wide, and dark brown (almost black) in color. The gecko will usually confine its feces to one area of a home, but this can present as a problem to humans if that area of the home happens to include a pale-colored carpet, drapes, or any other easily stained surface. The stains are not easily removed, and the droppings have to be physically scooped up as well.

Despite actually being harmless, the common house gecko or 'wood slave' is considered by some in Trinidad & Tobago to be a bad omen, and to have a poisonous touch. This is an old superstition and, in reality the house gecko is not only harmless, but also beneficial due to its hunting prey including mosquitos and cockroaches.