''Inthaeron'' is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

araneomorph The Araneomorphae (also called the Labidognatha) are an infraorder of spiders. They are distinguishable by chelicerae (fangs) that point diagonally forward and cross in a pinching action, in contrast to the Mygalomorphae (tarantulas and their cl ...

spiders in the family

Cithaeronidae Cithaeronidae is a small family of araneomorph spiders first described by Simon in 1893 Female ''Cithaeron'' are about long, males about . They are pale yellowish, fast-moving spiders that actively hunt at night and rest during the day, building ...

, containing the single species, ''Inthaeron rossi''. It was first described by Norman I. Platnick in 1991, and has only been found in

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

. Females can be distinguished from those of its sister genus, ''

Cithaeron Cithaeron or Kithairon (Κιθαιρών, -ῶνος) is a mountain and mountain range about sixteen kilometres (ten miles) long in Central Greece. The range is the physical boundary between Boeotia in the north and Attica in the south. It is mai ...

'', by the arrangement of cylindrical gland spigots on the posterior median

spinneret A spinneret is a silk-spinning organ of a spider or the larva of an insect. Some adult insects also have spinnerets, such as those borne on the forelegs of Embioptera. Spinnerets are usually on the underside of a spider's opisthosoma, and a ...

s, appearing in two rows rather than in clusters. The name is derived from "

", the country it was first found in, and "Cithaeron", the name of the other genus of ''Cithaeronidae''.

Species

The only species in the genus is ''Inthaeron rossi''. It was initially found in

Mahabaleshwar Mahabaleshwar () is a small town and a municipal council in Satara district, Maharashtra, India. It is a place of pilgrimage for Hindus because Krishna river has its origin here. The British colonial rulers developed the town as a hill station ...

Maharashtra Maharashtra (; , abbr. MH or Maha) is a states and union territories of India, state in the western India, western peninsular region of India occupying a substantial portion of the Deccan Plateau. Maharashtra is the List of states and union te ...

, India, though it has also been found in Betul, Madhya Pradesh. Only the female characters were known until 1994, when a male specimen was finally captured and identified, bearing the distinctive, highly coiled

embolus An embolus (; plural emboli; from the Greek ἔμβολος "wedge", "plug") is an unattached mass that travels through the bloodstream and is capable of creating blockages. When an embolus occludes a blood vessel, it is called an embolism or emb ...

. They are generally around long and wide. They have a greenish-brown

cephalothorax The cephalothorax, also called prosoma in some groups, is a tagma of various arthropods, comprising the head and the thorax fused together, as distinct from the abdomen behind. (The terms ''prosoma'' and ''opisthosoma'' are equivalent to ''cepha ...

and yellowish-brown legs. Their

abdomen The abdomen (colloquially called the belly, tummy, midriff, tucky or stomach) is the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. The abdomen is the front part of the abdominal segment of the torso. ...

is about twice as long as the

carapace A carapace is a Dorsum (biology), dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tor ...

, and is mostly light brown and hairy with several stripes of various colors. The species name is derived from one of the specimen's collectors.

References

Cithaeronidae Monotypic Araneomorphae genera Spiders of the Indian subcontinent {{Cithaeronidae-stub