''Sia ferox'' (also known as Riokku (リオック, loanword from the Indonesian name) or Obakekorogisu (オバケコロギス, "

Obake and are a class of '' yōkai'', preternatural creatures in Japanese folklore. Literally, the terms mean ''a thing that changes'', referring to a state of transformation or shapeshifting. These words are often translated as "ghost", but prima ...

raspy cricket") in Japan) is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

cricket Cricket is a bat-and-ball game played between two teams of eleven players on a field at the centre of which is a pitch with a wicket at each end, each comprising two bails balanced on three stumps. The batting side scores runs by str ...

that lives in Indonesia. It belongs to the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Stenopelmatidae and the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

Sia Sia Kate Isobelle Furler ( ; born 18 December 1975) is an Australian singer and songwriter. Born and raised in Adelaide, she started her career as a singer in the acid jazz band Crisp in the mid-1990s. In 1997, when Crisp disbanded, she rel ...

''.''Sia ferox''
/ref>

Appearance

The length is . Although its basic form is similar to other

Stenopelmatoidea Stenopelmatoidea is a superfamily of insects in the order Orthoptera; in some older classifications this group was referred to as Gryllacridoidea. Classification The classification and constituency of Stenopelmatoidea is an ongoing source of ...

, it is relatively elongated. Its body-color is brown. The female has a rudimentary ovipositor, unlike true

Gryllacrididae Gryllacrididae are a family of non-jumping insects in the suborder Ensifera occurring worldwide, known commonly as leaf-rolling crickets or raspy crickets. The family historically has been broadly defined to include what are presently several oth ...

Anostostomatidae Anostostomatidae is a family of insects in the order Orthoptera, widely distributed in the southern hemisphere. It is named Mimnermidae or Henicidae in some taxonomies, and common names include ''king crickets'' in South Africa and ''wētā'' in ...

species. It is similar to

Jerusalem cricket Jerusalem crickets (or potato bugs) are a group of large, flightless insects in the genera ''Ammopelmatus'' and ''Stenopelmatus'', together comprising the tribe Stenopelmatini. The former genus is native to the western United States and parts ...

s, but it is the only species of Stenopelmatidae that lives in Indonesia, and the related species '' Sia incisa'' occurs in

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...

Ecology

The species is a nocturnal predatory cricket that

preys Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...

on other insects found at the bottom of the rainforest. Like other Stenopelmatidae species, ''Sia ferox'' usually hides in its burrow during the day. At night, it comes out from its burrow and searches for prey like

spider Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species ...

s, grasshoppers, and other crickets. The detailed ecology of ''S. ferox'' is not known due to insufficient research.

References

External links

* * {{Taxonbar, from=Q7506508 Stenopelmatoidea Insects described in 1861