''Synsphyronus tenuis'' is a

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), ...

pseudoscorpion Pseudoscorpions, also known as false scorpions or book scorpions, are small, scorpion-like arachnids belonging to the order Pseudoscorpiones, also known as Pseudoscorpionida or Chelonethida. Pseudoscorpions are generally beneficial to humans bec ...

in the

Garypidae Garypidae is a family of pseudoscorpions, first described by Eugène Simon in 1879. Genera , the ''World Pseudoscorpiones Catalog'' accepts the following eleven genera: * '' Ammogarypus'' Beier, 1962 * '' Anagarypus'' Chamberlin, 1930 * '' Anc ...

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 ...

. It 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 Australia. It was described in 2022 by Australian

arachnologist Arachnology is the scientific study of arachnids, which comprise spiders and related invertebrates such as scorpions, pseudoscorpions, harvestmen, ticks, and mites. Those who study spiders and other arachnids are arachnologists. More narrowly ...

Mark Harvey Mark Harvey (born 11 June 1965) is a former Australian rules football player and coach. He played over 200 games during fourteen seasons with the Essendon Football Club, winning three premierships, and was senior coach of Fremantle from 2007 t ...

. The

specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

''tenuis'' (

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

: 'thin') refers to the species’ extremely slender appendages.

Description

Body lengths of males are 3.44–3.74 mm; those of females 3.66–4.29 mm. Colouration is generally yellowish-brown.

Distribution and habitat

The species occurs in south-west

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 ...

in the

Geraldton Sandplains Geraldton Sandplains is an Interim Biogeographic Regionalisation for Australia, interim Australian bioregion of Western Australia. It has an area of . The Geraldton Sandplains is part of the larger Southwest Australia savanna ecoregion, as asses ...

bioregion A bioregion is a geographical area, on land or at sea, defined not by administrative boundaries, but by distinct characteristics such as plant and animal species, ecological systems, soils and landforms, Human settlement, human settlements, and ...

. The type locality is

Kalbarri National Park Kalbarri National Park is located north of Perth, in the Mid West region of Western Australia. The major geographical features of the park include the Murchison River gorge which runs for nearly on the lower reaches of the Murchison River. S ...

, where the pseudoscorpions were found beneath

sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...

rocks.

Behaviour

The pseudoscorpions are

terrestrial Terrestrial refers to things related to land or the planet Earth, as opposed to extraterrestrial. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on o ...

predators Predation is a biological interaction in which 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 ...

References

tenuis Endemic fauna of Australia Pseudoscorpions of Australia Arthropods of Western Australia Animals described in 2022 Taxa named by Mark Harvey {{pseudoscorpion-stub