Kings' monitor (''Varanus kingorum''), also known commonly as Kings' goanna, Kings' rock monitor, and the pygmy rock monitor, is a small

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

monitor lizard Monitor lizards are lizards in the genus ''Varanus,'' the only extant genus in the family Varanidae. They are native to Africa, Asia, and Oceania, and West African Nile monitor, one species is also found in south America as an invasive species. A ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Varanidae The Varanidae are a family of lizards in the superfamily Varanoidea and order Anguimorpha. The family, a group of carnivorous and frugivorous lizards, includes the living genus '' Varanus'' and a number of extinct genera more closely related ...

. The species is native to

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

Geographic range

''V. kingorum'' is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the northwestern part of the

Northern Territory The Northern Territory (abbreviated as NT; known formally as the Northern Territory of Australia and informally as the Territory) is an states and territories of Australia, Australian internal territory in the central and central-northern regi ...

, and the adjacent northeastern part of

Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust ...

Taxonomy

The original description of ''V. kingorum'' as a species new to science was published in 1980, the result of a revision of Western and Central Australian

varanid The Varanidae are a family of lizards in the superfamily Varanoidea and order Anguimorpha. The family, a group of carnivorous and frugivorous lizards, includes the living genus '' Varanus'' and a number of extinct genera more closely related ...

taxa. Kings' monitor belongs to the

subgenus In biology, a subgenus ( subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the ge ...

''Odatria'' along with the

peacock monitor The peacock monitor (''Varanus auffenbergi)'', also known Common name, commonly as Auffenberg's monitor, is a species of small monitor lizard in the Family (biology), family Varanidae. The species, which belongs to the subgenus ''Odatria'', is En ...

and the Pilbara monitor. Comparatively little is known about this species. The

holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ...

was collected beneath rocks in 1978 at Timber Creek in the Northern Territory by Max King.

Etymology

The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

, ''kingorum'' (genitive plural), is in honour of Canadian-born Australian

ecologist Ecology () is the natural science of the relationships among living organisms and their environment. Ecology considers organisms at the individual, population, community, ecosystem, and biosphere levels. Ecology overlaps with the closely re ...

Richard Dennis King (1942–2002) and Australian

geneticist A geneticist is a biologist or physician who studies genetics, the science of genes, heredity, and variation of organisms. A geneticist can be employed as a scientist or a lecturer. Geneticists may perform general research on genetic process ...

Max King (born 1946), honouring their contributions to the understanding of Australia varanids.

Habitat

Kings' goanna inhabits rocky outcrops of the

Kimberley Kimberly or Kimberley may refer to: Places and historical events Australia Queensland * Kimberley, Queensland, a coastal locality in the Shire of Douglas South Australia * County of Kimberley, a cadastral unit in South Australia Ta ...

region and adjacent areas. It is usually found in areas with rock exfoliations or slopes with open

bushland In Australia, bushland is a blanket term for land which supports remnant natural area, remnant vegetation or land which is disturbed but still retains a predominance of the original floristics and structure. Human survival in bushland has a wh ...

and

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

s, where boulders and outcrops provide its required

microhabitat In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...

. ''V. kingorum'' is also found in

grasslands A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge ( Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes such as clover, and other herbs. Grasslands occur ...

Description

''V. kingorum'' is one of the smallest species of its

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

, reaching a total length (including tail) of up to . It is reddish brown in colour with a black

reticulum Reticulum is a small, faint constellation in the southern sky. Its name is Latin for a small net, or reticle—a net of crosshairs at the focus of a telescope eyepiece that is used to measure star positions. The constellation is best viewed b ...

in the juvenile that breaks down with age to form dark flecks. Small blackish spots appear at most parts of the dark upper body, and at the throat and near the vent against the creamy colour of the underparts.

Behaviour

Kings' monitor retreats into holes, rock fissures, and small crevices when it is approached, being extremely shy. This species has a long tail that is sometimes used to prod prey out of tight, inaccessible crevices. Such is a behaviour demonstrated by both adults and hatchlings alike, and as such is likely instinctual rather than learned.

Reproduction

''V. kingorum'' is

oviparous Oviparous animals are animals that reproduce by depositing fertilized zygotes outside the body (i.e., by laying or spawning) in metabolically independent incubation organs known as eggs, which nurture the embryo into moving offsprings kno ...

. The incubation period of the eggs ranges from 89 to 126 days at a temperature of 29 +/- 2 °C.

Diet

''V. kingorum'' appears to feed exclusively on

insect Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, ...

s, including

locust Locusts (derived from the Latin ''locusta'', locust or lobster) are various species of short-horned grasshoppers in the family Acrididae that have a swarming phase. These insects are usually solitary, but under certain circumstances they b ...

termite Termites are a group of detritivore, detritophagous Eusociality, eusocial cockroaches which consume a variety of Detritus, decaying plant material, generally in the form of wood, Plant litter, leaf litter, and Humus, soil humus. They are dist ...

s, and insect eggs.

References

External links

Photo of ''Varanus kingorum'' at Varanus.nl