''Bertrana'' is a

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 ...

Central Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known as ...

and

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...

n orb-weaver spiders first described by

Eugen von Keyserling Eugen von Keyserling (22 March 1833 in Pockroy, Lithuania – 4 April 1889 in Dzierżoniów, Silesia) was a Baltic-German arachnologist. He studied in the University of Tartu. He was the author of ''Die Spinnen Amerikas'', and completed ''Die Ara ...

in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. The eight eyes are in two rows. The abdomen is white on top and on the sides, with multiple hieroglyphic-like lines and bars of many different shapes and length. In females, these are red, in males, black.

Species

it contains twelve species: *''

Bertrana abbreviata ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' (Keyserling, 1879) – Colombia *''

Bertrana arena ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Levi, 1989 – Costa Rica *'' Bertrana benuta'' Levi, 1994 – Colombia *''

Bertrana elinguis ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' (Keyserling, 1883) – Ecuador, Peru, Brazil, French Guiana *''

Bertrana laselva ''Bertrana'' is a 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 bel ...

'' Levi, 1989 – Costa Rica *''

Bertrana nancho ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Levi, 1989 – Peru *''

Bertrana planada ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Levi, 1989 – Colombia, Ecuador *''

Bertrana poa ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Levi, 1994 – Ecuador *''

Bertrana rufostriata ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Simon, 1893 – Venezuela, Brazil *''

Bertrana striolata ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Keyserling, 1884 – Costa Rica to Argentina *''

Bertrana urahua ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Levi, 1994 – Ecuador *''

Bertrana vella ''Bertrana'' is a genus of Central and South American orb-weaver spiders first described by Eugen von Keyserling in 1884. It includes some of the smallest known araneid orb-weavers. ''Bertrana striolata'' females are 4.5 mm long or less. Th ...

'' Levi, 1989 – Panama, Colombia

References

Araneidae Araneomorphae genera Spiders of Central America Spiders of South America Taxa named by Eugen von Keyserling {{Araneidae-stub