Yllenus

Yllenus is a genus of jumping spiders that was first described by Eugène Louis Simon in 1868.^[2] Until 2019,^[3] it was considered a senior synonym of Pseudomogrus, and many of the species formerly placed here were transferred to new genera Logunyllus and Marusyllus by Jerzy Prószyński in 2016.^[4]

Yllenus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Araneomorphae
Family:	Salticidae
Subfamily:	Salticinae
Genus:	Yllenus Simon, 1868[1]
Type species
Y. arenarius Simon, 1868
Species
18, see text

Y. arenarius is peculiar in building silken nests under the sand surface of sandy dunes it inhabits.^[5]

Species

As of September 2019^[update] it contains eighteen species, found from central Europe to China:^[1]

• Yllenus arenarius Simon, 1868 (type) – Central, Eastern Europe
• Yllenus baltistanus Caporiacco, 1935 – India
• Yllenus charynensis Logunov & Marusik, 2003 – Kazakhstan
• Yllenus desertus Wesolowska, 1991 – Mongolia
• Yllenus dunini Logunov & Marusik, 2003 – Azerbaijan, Kazakhstan
• Yllenus erzinensis Logunov & Marusik, 2003 – Russia, Mongolia
• Yllenus flavociliatus Simon, 1895 – Russia, Central Asia, Mongolia, China
• Yllenus gajdosi Logunov & Marusik, 2000 – Mongolia
• Yllenus horvathi Chyzer, 1891 – Hungary, Bulgaria, Romania, Ukraine
• Yllenus karakumensis Logunov & Marusik, 2003 – Turkmenistan
• Yllenus kononenkoi Logunov & Marusik, 2003 – Kyrgyzstan
• Yllenus kulczynskii Punda, 1975 – Mongolia
• Yllenus lyachovi Logunov & Marusik, 2000 – Russia (Europe), Kazakhstan
• Yllenus marusiki Logunov, 1993 – Mongolia
• Yllenus rotundiorificus Logunov & Marusik, 2000 – Mongolia
• Yllenus turkestanicus Logunov & Marusik, 2003 – Central Asia
• Yllenus uiguricus Logunov & Marusik, 2003 – Kazakhstan
• Yllenus zyuzini Logunov & Marusik, 2003 – Russia (Caucasus), Kazakhstan, Turkmenistan