''Nigma'' 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 ...
of
cribellate araneomorph spiders in the family
Dictynidae, and was first described by
Pekka T. Lehtinen
Pekka T. Lehtinen (born 1934) is a Finnish arachnology, arachnologist and taxonomy (biology), 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 ...
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 archipelago a ...
, North America, and
Northern Africa.
''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 torso. ...
.
Species
it contains fourteen species:
*''
Nigma conducens''
(O. Pickard-Cambridge
Octavius Pickard-Cambridge FRS (3 November 1828 – 9 March 1917) was an English clergyman and zoologist. He was a keen arachnologist who described and named more than 900 species of spider.
Life and work
Pickard-Cambridge was born in Blox ...
, 1876) – North Africa
*''
Nigma flavescens''
(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''
( Berland & Millot, 1940) – Senegal
*''
Nigma gratiosa''
( Simon, 1881) – Portugal, Spain, North Africa
*''
Nigma hortensis''
(Simon, 1870) – Portugal, Spain, France, Algeria
*''
Nigma laeta''
(Spassky, 1952) – Azerbaijan, Iran, Tajikistan
*''
Nigma linsdalei''
( Chamberlin & Gertsch
Willis John Gertsch (October 4, 1906 – December 12, 1998) was an American arachnologist. He described over 1,000 species of spiders, scorpions, and other arachnids, including the Brown recluse spider and the Tooth cave spider.
Gertsch was born ...
, 1958) – USA
*''
Nigma longipes''
(Berland, 1914) – East Africa
*''
Nigma nangquianensis''
(Hu, 2001) – China
*''
Nigma puella''
(Simon, 1870) – Europe, Azores, Madeira, Canary Is.
*''
Nigma shiprai''
( Tikader, 1966) – India
*''
Nigma tuberosa''
Wunderlich, 1987 – Canary Is.
*''
Nigma vulnerata''
(Simon, 1914) – Mediterranean
*''
Nigma walckenaeri''
( Roewer, 1951) – Europe, Turkey, Caucasus
References
External links
Nigmaat
BugGuide
Araneomorphae genera
Cosmopolitan spiders
Dictynidae
Taxa named by Pekka T. Lehtinen
{{Dictynidae-stub