''Nigma'' 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 below family. In binomial n ...

cribellate Cribellum literally means "little sieve", and in biology the term generally applies to anatomical structures in the form of tiny perforated plates. In certain groups of diatoms it refers to microscopically punctured regions of the frustule, or ...

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

Dictynidae Dictynidae is a family of cribellate, hackled band-producing spiders first described by Octavius Pickard-Cambridge in 1871. Most build irregular webs on or near the ground, creating a tangle of silken fibers among several branches or stems of one ...

, and was first described by

Pekka T. Lehtinen Pekka T. Lehtinen (born 1934) is a Finnish arachnologist and taxonomist. He is known for his works in systematics and for the many expeditions in which he has participated. Biography Lehtinen was born on 5 April 1934 in a small village, Pargas, ...

in 1967. They have a wide distribution, including

Eurasia Eurasia (, ) is the largest continental area on Earth, comprising all of Europe and Asia. Primarily in the Northern and Eastern Hemispheres, it spans from the British Isles and the Iberian Peninsula in the west to the Japanese archipelag ...

, North America, and

Northern Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...

. ''N. walckenaeri'' is one of the biggest members of the Dictynidae, growing up to long. They are translucent green and sometimes have red or black markings on the

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 ...

Species

it contains fourteen species: *''

Nigma conducens ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' ( O. Pickard-Cambridge, 1876) – North Africa *''

Nigma flavescens ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' (Walckenaer, 1830) (

type Type may refer to: Science and technology Computing * Typing, producing text via a keyboard, typewriter, etc. * Data type, collection of values used for computations. * File type * TYPE (DOS command), a command to display contents of a file. * Ty ...

) – Europe, Caucasus, Iran *''

Nigma gertschi ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' (

Berland Berland is a surname. Notable people with the surname include: * Bjørn Berland (born 1977), Norwegian footballer * Eliezer Berland (born 1937), Israeli Breslov rabbi * François Berland (born 1958), French actor * Gary Berland (1950–1988), Ame ...

& Millot, 1940) – Senegal *''

Nigma gratiosa ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' (

Simon Simon may refer to: People * Simon (given name), including a list of people and fictional characters with the given name Simon * Simon (surname), including a list of people with the surname Simon * Eugène Simon, French naturalist and the genus ...

, 1881) – Portugal, Spain, North Africa *''

Nigma hortensis ''Nigma hortensis'' is a spider species found in Portugal, Spain, France and Algeria. See also * List of Dictynidae species This page lists all described species of the spider family Dictynidae accepted by the World Spider Catalog : A ''Ad ...

'' (Simon, 1870) – Portugal, Spain, France, Algeria *''

Nigma laeta ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' (Spassky, 1952) – Azerbaijan, Iran, Tajikistan *''

Nigma linsdalei ''Nigma linsdalei'' is a species of mesh web weaver in the spider family Dictynidae. It is found in the United States. References Dictynidae Articles created by Qbugbot Spiders described in 1958 {{dictynidae-stub ...

'' (

Chamberlin The Chamberlin is an electro-mechanical keyboard instrument that was a precursor to the Mellotron. It was developed and patented by the American inventor Harry Chamberlin from 1949 to 1956, when the first model was introduced. There are several ...

& Gertsch, 1958) – USA *''

Nigma longipes ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' (Berland, 1914) – East Africa *''

Nigma nangquianensis ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' (Hu, 2001) – China *''

Nigma puella ''Nigma puella'' is a species of spider belonging to the family Dictynidae. It is found in Europe, Azores, Madeira, Canary Islands and parts of North Africa. Like most members of the family, this is a small spider but the female is striking ...

'' (Simon, 1870) – Europe, Azores, Madeira, Canary Is. *''

Nigma shiprai ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' ( Tikader, 1966) – India *''

Nigma tuberosa ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' Wunderlich, 1987 – Canary Is. *''

Nigma vulnerata ''Nigma'' is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. ''N. walckenaeri' ...

'' (Simon, 1914) – Mediterranean *''

Nigma walckenaeri ''Nigma walckenaeri'' is a green cribellate spider up to five millimetres long, the largest of the family Dictynidae. While most of the body is a somewhat yellowish, the abdomen is a shining green, which makes it rather distinct and hard to co ...

'' ( Roewer, 1951) – Europe, Turkey, Caucasus

References

External links

Nigma
at

BugGuide BugGuide (or BugGuide.net) is a website and online community of naturalists, both amateur and professional, who share observations of arthropods such as insects, spiders, and other related creatures. The website consists of informational guide p ...

Araneomorphae genera Cosmopolitan spiders Dictynidae Taxa named by Pekka T. Lehtinen {{Dictynidae-stub