Children's python
Children's python is a species of nonvenomous snake in the family Pythonidae. The species is named after John George Children. It is a nocturnal species occurring in the northern half of Australia and generally found on the ground, although it often climbs trees. Usually growing to about in length or more depending on the polymorphic variant, it is typically a reddish-brown colour, darker on the upper surface, and with many darker blotches, especially on younger specimens. The Stimson's python variant has much stronger and more variable colours; often being adorned with reddish-brown to chocolate blotches against lighter tan. It feeds mostly on small mammals and birds, and as with other pythons, it constricts its prey before swallowing it whole. It is a popular pet among reptile enthusiasts.
Taxonomy and naming
Antaresia childreni is one of four species in the genus Antaresia, a genus in the family Pythonidae. The genus is named after the star Antares. John Edward Gray published the original description of the species in 1842, naming it Liasis childreni. Both the common name and the specific epithet, childreni, are in honour of Gray's mentor, John George Children, a curator of the zoological collection at the British Museum around that time. As of 2020 no subspecies are recognised as being valid. Some species of the genus Antaresia were formerly assigned to the genus Morelia. Studies published in 2020 on the members of the genus Antaresia concluded that Stimson's and Children's pythons are synonymous species with different polymorphism. As a result, Stimson's python is now considered a polymorphic variant of Children's python.Children's python is known by other common names such as banded rock python, small-blotched python, and eastern small-blotched python.
Description
Adults of A. childreni grow to a total length around depending on locality and polymorphic variant. The scales on the top of the head are enlarged, while those on the upper surface of the body are small and smooth, with a rainbow sheen that can be seen when exposed to direct sunlight. The upper surface of the snake is brown with darker spots in five or six longitudinal series in the type variant. A dark streak on each side of the head passes across the eye. The lips are yellowish, spotted with brown. The lower surface of the snake is uniformly yellowish. The head of the snake is distinct from the neck. The nostril is superolateral, pierced in a large semidivided nasal scale. The eye is moderate in size, with a vertical pupil. The body is slightly laterally compressed. The tail is short. About 41 to 45 rows of dorsal scales cross the snake's back, and 257 to 287 ventral scales are seen along the lower surface. A single undivided anal scale is found immediately in front of the anus, and 38 to 53 subcaudal scales are on the lower surface between the anus and the tip of the tail, all or mostly in two rows. The polymorphic variant known as the Stimson's python has much stronger and more variable colours; often being adorned with reddish-brown to chocolate blotches against lighter tan.The rostral is broader than high, barely visible from above. The internasals are slightly longer than broad and are shorter than the anterior prefrontals. The second pair of prefrontals is in contact at the midline, or is separated by a small shield. These posterior prefrontals are sometimes broken into several shields. The frontal is one and a half times as long as broad, slightly shorter than its distance from the end of the snout, longer than the small parietals. Three to 10 small loreal shields are present, some almost granular, with 11 to 13 upper labials. Three or four of the posterior lower labials have deep pits. The anterior maxillary teeth and anterior mandibular teeth are very long, gradually decreasing in size posteriorly. The premaxillary bone also has teeth.[Image:Childreni sheen.jpg|right|thumb|A. childreni: rainbow sheen]
[Image:Children's Python.jpg|right|thumb|A. childreni, young male]
Geographic range
A. childreni is found in Australia in the extreme north of Western Australia, the northern third of the Northern Territory, and northern Queensland, and also on the islands of the Torres Strait. The Stimson's python variant is found throughout an even greater range; it occupies much of the interior of Australia, from Queensland to Perth.The type locality is given by Gray as "—?", is listed as "N.W. Australia" by Boulenger in his Catalogue of the Snakes in the British Museum. Volume I., and is listed as "unknown" in Stimson.
A. childreni occurs specifically in the region spanning the coast between the Kimberleys in Western Australia to Mount Isa in northwestern Queensland.
Habitat
Children's python is found in a variety of natural habitats, including forest, savanna, shrubland, desert, grassland, and freshwater wetlands. In Alice Springs the cosmopolitan tick Amblyomma limbatum has been collected from a Children's python.The peak activity period for the Children's python, as determined from callouts by members of the public to professional snake catchers, in the Darwin region is during the later part of the wet season. During this period the species is significantly more likely to be encountered in and around open grassland and plains habitats than during other months of the year.