''Inthaeron rossi'' is a species of

araneomorph The Araneomorphae (also called the Labidognatha or "true spiders") 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 (taran ...

spider Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and ran ...

endemic to

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

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, buildin ...

, that was described by

Norman I. Platnick Norman Ira Platnick (December 30, 1951 – April 8, 2020) was an American biological systematist and Arachnology, arachnologist. At the time of his death, he was a professor emeritus of the American Museum of Natural History#Richard Gilder Gradua ...

in 1991.

Description

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

is about twice as long as the

carapace A carapace is a 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 tortoises, the unde ...

, and is mostly light brown and hairy with several stripes of various colors. 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 (; : emboli; from the Greek ἔμβολος "wedge", "plug") is an unattached mass that travels through the circulatory system, bloodstream and is capable of creating blockages. When an embolus Vascular occlusion, occludes a blood vess ...

. The species name is derived from one of the specimen's collectors.

Distribution

It was initially found in Mahabaleshwar,

Maharashtra Maharashtra () is a state in the western peninsular region of India occupying a substantial portion of the Deccan Plateau. It is bordered by the Arabian Sea to the west, the Indian states of Karnataka and Goa to the south, Telangana to th ...

, India, though it has also been found in

Betul, Madhya Pradesh Betul () is Municipal Council town in Madhya Pradesh, India. It is the administrative head-quarter of Betul district and forms the southernmost part of the Narmadapuram Division. Name During the early 20th century, Betul was known as Badnur. ...

References

Cithaeronidae Spiders described in 1991 Spiders of the Indian subcontinent {{Cithaeronidae-stub