Species delimitation, biogeography, and natural history of dwarf funnel web spiders (Mygalomorphae, Hexurellidae, Hexurella) from the United States / Mexico borderlands

H. apachea A ♂ palp, retrolateral view, Mule Mtns (SDSU_TAC000684) B ♂ palp, retrolateral view, Cave Creek Canyon (SDSU_TAC000685) C ♂ palp, retrolateral view, Mustang Mtns (SDSU_TAC000686) D ♂ palp, retrolateral view, Redington Pass (SDSU_TAC000687) E habitat, Whetstone Mtns (RWM 21_029) F web, French Joe Canyon (RWM 21_075).