Lampshade-spider
Guides
Hypochilus kastoni
Hypochilus kastoni is a species of lampshade spider in the family Hypochilidae, described by Norman Platnick in 1987. It is one of several species in the genus Hypochilus, a group of spiders notable for their distinctive web architecture and relictual distribution in North America. The species is known from the western United States, where it inhabits rocky habitats. Like other Hypochilus species, it constructs characteristic flat, circular webs with a conical retreat, resembling a lampshade in appearance.
Hypochilus petrunkevitchi
lampshade spider
Hypochilus petrunkevitchi is a lampshade spider endemic to the southern Sierra Nevada of California. It exhibits extreme intraspecific genetic divergence, with nuclear and mitochondrial lineages corresponding directly to drainage basins. Populations show >15% CO1 divergence between river basins despite striking male morphological stasis. The species is a textbook example of a short-range endemic with naturally limited dispersal ability.