Description: The Mediterranean gecko is a very small lizard generally measuring between 4–5 inches in length, with sticky toe pads, vertical pupils, and large eyes that lack eyelids. Snout rounded, about as long as the distance between the eye and the ear opening, 1.25 to 1.3 the diameter of the orbit; forehead slightly concave; ear-opening oval, oblique, nearly half the diameter of the eye. Body and limbs moderate. Digits variable in length, the inner always well developed; 6 to 8 lamellae under the inner digits, 8 to 10 under the fourth finger, and 9 to 11 under the fourth toe. Head with large granules anteriorly, posteriorly with minute granules intermixed with round tubercles. Rostrum four-sided, not twice as broad as deep, with medial cleft above; nostril pierced between the rostrum, the first labial, and three nasals; 7 to 10 upper and 6 to 8 lower labials; mental large, triangular, at least twice as long as the adjacent labials, its point between two large chin-shields, which may be in contact behind it; a smaller chin shield on each side of the larger pair. Upper surface of body covered with minute granules intermixed with large tubercles, generally larger than the spaces between them, suboval, trihedral, and arranged in 14 or 16 pretty, regular longitudinal series. Abdominal scales small, smooth, roundish-hexagonal, imbricate. Males with a short angular series of 4 to 10 (exceptionally 2) preanal pores. Tail cylindrical, slightly depressed, tapering, covered above with minute scales and transverse series of large keeled tubercles, beneath with a series of large transversely dilated plates. Light brown or grayish above, spotted with darker; many of the tubercles white, lower surfaces white. They may be completely translucent except for the spotting. Some are darker.
Habitat: Mediterranean house geckos inhabit a wide range of habitats. They can be found in areas near human presence such as university campuses, cemeteries, coastal regions, and shrublands. In these urban or suburban areas, they are typically seen in the cracks of old brick buildings. They can also be found in other areas like mountain cliffs and caves. Their nests can be found in trash piles, attics, or under the baseboards of buildings .
Range: As of 2016 it was known from across the Southern United States including Arizona, California, Nevada, and New Mexico in the southwest, and Alabama, Arkansas, Florida, Georgia, Kansas, Kentucky, Louisiana, Maryland, Mississippi, Missouri, North Carolina, Oklahoma, South Carolina, Texas, and Virginia, being particularly well-established in Gulf Coast states in the east. More recently records have been published from several localities in Pennsylvania, and Tennessee. It was also reported from Indiana in 2019 but, it was unknown at that time if the individual represented an established population or not.
Diet: Mediterranean geckos are insectivorous and can be seen around light sources at night, waiting to eat a passing moth. They also eat other small invertebrates like roaches and spiders. Additionally, they are adept at ambushing prey such as crickets.
Reproduction: Mediterranean house geckos reach sexual maturity within four months to a year. Male house geckos produce clicking sounds to attract a mate, with the female responding in her own squeaks. They also display copulatory biting, with stronger bites resulting in higher fertilization success. Fertilization is internal. Breeding season is typically from April to August each year and eggs are laid mid-May to August in an average clutch size of two. Female house geckos experience delayed fertilization and can store sperm in a funnel shaped organ called the infundibulum for up to five months. Because of this, exact gestation time is unknown but is estimated to be around 40 days. Neither males nor females have been observed providing any parental care, with males going as far as to bite the juveniles.
Status: Listed as Least Concern in view of its wide distribution, tolerance of extensive habitat modification, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. However, it is not a legal authority for statutory or regulatory purposes. While every effort has been made to provide the most reliable and up-to-date information available, ultimate legal requirements with respect to species are contained in provisions of treaties to which the United States is a party, wildlife statutes, regulations, and any applicable notices that have been published in the Federal Register. For further information on U.S. legal requirements with respect to protected taxa, please contact the U.S. Fish and Wildlife Service.
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