''Spintharus berniesandersi'' is a species of ''

Spintharus The spider genus ''Spintharus'' occurs from the northeastern United States to Brazil. Nicholas Marcellus Hentz circumscribed the genus in 1850, initially as a monospecific genus containing his newly described species ''S. flavidus''. It is ver ...

'' ("smiley-faced spiders") in the family

Theridiidae Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of Araneomorphae, araneomorph spiders first described by Carl Jakob Sundevall in 1833. This diverse, globally distributed family includes ...

. It is

endemic Endemism is the state of a species being found 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 found els ...

Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea ...

. It was described in 2018 by and Lily Sargeant of the

University of Vermont The University of Vermont (UVM), officially the University of Vermont and State Agricultural College, is a public land-grant research university in Burlington, Vermont. It was founded in 1791 and is among the oldest universities in the United ...

in a revision of the genus by Agnarsson and colleagues. ''S. berniesandersi'' was discovered alongside 14 other species of smiley-faced spiders. This revision is in contrast to

Herbert Walter Levi Herbert Walter Levi (January 3, 1921 – November 3, 2014) was professor emeritus of zoology and curator of arachnology at the Museum of Comparative Zoology, Harvard University. He was born in Germany, educated there and at Leighton Park School, Re ...

's taxonomy, which considered it to be intraspecific variation within ''

Spintharus flavidus ''Spintharus flavidus'' is a species of cobweb spider Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of araneomorph spiders first described by Carl Jakob Sundevall in 1833. This dive ...

''.

Distribution

The specimens mentioned in the original

species description A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have be ...

all came from

. The

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of seve ...

was collected in Mensura-Piloto National Park, near

Mayarí Mayarí is a municipality and town in the Holguín Province of Cuba. History The origins of the city date back to 1757 in Spanish Cuba, when the first farms were established here by immigrant colonists. On 19 January 1879 the city became the s ...

Holguín Province Holguín () is one of the provinces of Cuba, the third most populous after Havana and Santiago de Cuba. It lies in the southeast of the country. Its major cities include Holguín (the capital), Banes, Antilla, Mayarí, and Moa. The province ...

. Additional specimens were collected from El Yunque Mountain, near

Baracoa Baracoa, whose full original name is: ''Nuestra Señora de la Asunción de Baracoa'' (“Our Lady of the Assumption of Baracoa”), is a municipality and city in Guantánamo Province near the eastern tip of Cuba. It was visited by Admiral Christop ...

Guantánamo Province Guantánamo is the easternmost province of Cuba. Its capital is also called Guantánamo. Other towns include Baracoa. The province has the only land border of the U.S. Navy base at Guantánamo Bay. Overview Guantánamo's architecture and cul ...

and

Gran Piedra Gran may refer to: People * Grandmother, affectionately known as "gran" *Gran (name) Places * Gran, the historical German name for Esztergom, a city and the primatial metropolitan see of Hungary * Gran, Norway, a municipality in Innlandet cou ...

Santiago de Cuba Province Santiago de Cuba Province is the second most populated province in the island of Cuba. The largest city Santiago de Cuba is the main administrative center. Other large cities include Palma Soriano, Contramaestre, San Luis and Songo-la Maya. H ...

Description

The species has a lemon-yellow colour and the female

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 tors ...

lacks humps and is nearly oval. On the spider's back is an ornate pattern halfway between a distorted smiley face and grimace.

Measurements

The male's total length is 2.47–2.66 mm, with a

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 ''ceph ...

length of 0.74–0.98 mm and

femur The femur (; ), or thigh bone, is the proximal bone of the hindlimb in tetrapod vertebrates. The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint, while the distal part of the femur articulates wit ...

I length of 1.23–1.90 mm. The female's total length is 2.89–2.40 mm, with a cephalothorax length of 0.91–0.80 mm and a femur I length of 1.75–1.44 mm.

Genetics

Part of the diagnosis of ''S. berniesandersi'' includes the combination of four specific mitochondrial DNA nucleotide substitutions.

Etymology

The specific name honors Vermont senator Bernie Sanders, whom the authors describe as "a tireless fighter for human rights and equality, and environmentally aware social democracy". Due to its name, this species received media attention.

References

External links

* Spiders described in 2018 Arthropods of Cuba Bernie Sanders Theridiidae Spiders of the Caribbean Endemic fauna of Cuba {{Theridiidae-stub