{{Taxobox | name = Wheeler's Knob-tailed Gecko | image = Nephrurus wheeleri.jpg | image_width = 250px | image_caption = ''Nephrurus wheeleri'' | regnum = Animalia | phylum = Chordata | classis = Reptilia | ordo = Squamata | familia = Carphodactylidae | genus = ''Nephrurus'' | species = ''N. wheeleri'' | binomial = ''Nephrurus wheeleri'' | binomial_authority = Loveridge, 1932 }}
Nephrurus wheeleri, commonly known as Wheeler's Knob-tailed Gecko or Wheeler's Thick-tailed Gecko, is a species of gecko endemic to the arid and semi-arid regions of Western Australia. It is notable for its distinctive tail, which terminates in a small, spherical knob.
Taxonomy
''Nephrurus wheeleri'' was first described by Arthur Loveridge in 1932. It belongs to the genus ''Nephrurus'', which comprises a group of geckos often referred to as knob-tailed geckos due to their unique tail morphology. The genus ''Nephrurus'' is part of the family Carphodactylidae, a group of geckos largely confined to Australia. The specific epithet ''wheeleri'' honors an individual named Wheeler, though detailed information on who this refers to is not always readily available in standard species descriptions.Description
''Nephrurus wheeleri'' is a relatively small to medium-sized, robust gecko, typically reaching a snout-to-vent length (SVL) of 6-8 cm, with a total length of up to 12 cm including the tail. Its body is covered in small, rounded tubercles, giving it a somewhat rough texture.A defining characteristic is its short, thick tail, which ends in a distinct, rounded "knob" or "button". This tail can be autotomized (shed) as a defense mechanism, and a regenerated tail typically retains the knob-like appearance, though it may be less perfectly formed.
The coloration of ''N. wheeleri'' varies significantly depending on the individual and its specific habitat. Common patterns include a base color of reddish-brown, yellow-brown, or grey, often adorned with lighter transverse bands or spots, sometimes outlined in darker pigment. The ventral surface is typically paler. This cryptic coloration aids in camouflage against the desert substratum. The eyes are relatively large, with vertical pupils, adapted for nocturnal vision.
Habitat and Distribution
''Nephrurus wheeleri'' is native to Western Australia, primarily found across the Murchison, Gascoyne, and Pilbara regions. Its habitat consists of arid and semi-arid environments, including spinifex grasslands, rocky outcrops, and areas with sandy or loamy soils. These geckos are terrestrial and fossorial, spending their days sheltering in self-dug burrows or under rocks, leaf litter, and other ground debris to escape the harsh desert heat and predators. They emerge at night to hunt.Behavior and Ecology
Like all species in its genus, ''Nephrurus wheeleri'' is strictly nocturnal. It is a terrestrial hunter, actively foraging for prey on the ground surface. Its diet primarily consists of various invertebrates, including insects such as crickets, beetles, and moths, as well as spiders and other small arthropods.When threatened, ''N. wheeleri'' employs several defensive strategies. It may arch its back, inflate its body, and utter a series of hisses. If further provoked, it can rapidly vibrate its tail, creating a rustling sound, and may even bluff-charge or bite. Its cryptic coloration also serves as a primary defense against detection.
Reproduction typically involves the laying of clutches, usually consisting of two soft-shelled eggs. These eggs are buried in moist substrate and hatch after an incubation period that varies with temperature.