Lampshade spider

Lampshade spiders, family Hypochilidae, are among the most primitive of araneomorph spiders. There are two genera and twelve species currently recognized. Like mygalomorphs, most hypochilids have two pairs of book lungs, but like araneomorphs they have intersecting fangs, with the exception of some species which have chelicerae in an angle that is neither orthognathous or labidognathous. These long-legged spiders build typical "lampshade" style webs under overhangs and in caves. In the United States the fauna is primarily associated with the Appalachian, Rocky and California Mountains. Ten of the known species are found in these ranges, all in the genus Hypochilus. The genus Ectatosticta is found in China.

In one analysis, the Hypochilidae are a sister clade to the Neocribellatae, which contains all other spider species in the Araneomorphae (Coddington & Levi, 1991, p. 576). A more recent study groups them with the Haplogynae.

Species
Ectatosticta Simon, 1892 – China
 * Ectatosticta davidi (Simon, 1889)
 * Ectatosticta deltshevi Platnick & Jäger, 2009
 * Ectatosticta baima Lin & S. Q. Li, 2021 – China
 * Ectatosticta baixiang Lin & S. Q. Li, 2021 – China
 * Ectatosticta bajie Lin & Li, 2021 – China
 * Ectatosticta dapeng Lin & Li, 2021 – China
 * Ectatosticta davidi (Simon, 1889) – China
 * Ectatosticta deltshevi Platnick & Jäger, 2009 – China
 * Ectatosticta furax Wang, Zhao, Irfan & Zhang, 2021 – China
 * Ectatosticta helii Lin & S. Q. Li, 2021 – China
 * Ectatosticta menyuanensis Wang, Zhao, Irfan & Zhang, 2021 – China
 * Ectatosticta pingwuensis Wang, Zhao, Irfan & Zhang, 2021 – China
 * Ectatosticta puxian Lin & S. Q. Li, 2021 – China
 * Ectatosticta qingshi Lin & S. Q. Li, 2021 – China
 * Ectatosticta rulai Lin & Li, 2021 – China
 * Ectatosticta shaseng Lin & S. Q. Li, 2021 – China
 * Ectatosticta shennongjiaensis Wang, Zhao, Irfan & Zhang, 2021 – China
 * Ectatosticta songpanensis Wang, Zhao, Irfan & Zhang, 2021 – China
 * Ectatosticta wenshu Lin & S. Q. Li, 2021 – China
 * Ectatosticta wukong Lin & Li, 2020 – China
 * Ectatosticta xuanzang Lin & Li, 2020 – China
 * Ectatosticta yukuni Lin & Li, 2021 – China
 * Ectatosticta zhouzhiensis Wang, Zhao, Irfan & Zhang, 2021 – China

Hypochilus Marx, 1888 – US
 * Hypochilus bernardino Catley, 1994 – USA
 * Hypochilus bonneti Gertsch, 1964 – USA
 * Hypochilus coylei Platnick, 1987 – USA
 * Hypochilus gertschi Hoffman, 1963 – USA
 * Hypochilus jemez Catley, 1994 – USA
 * Hypochilus kastoni Platnick, 1987 – USA
 * Hypochilus petrunkevitchi Gertsch, 1958 – USA
 * Hypochilus pococki Platnick, 1987 – USA
 * Hypochilus sheari Platnick, 1987 – USA
 * Hypochilus thorelli Marx, 1888 (type) – USA
 * Hypochilus xomote (Hedin & Ciaccio, 2022) – USA