Simonia gen. nov., a new spider genus (Araneae, Theridiosomatidae) from Southeast Asia.

A new theridiosomatid genus, Simonia Yu & Lin, gen. nov. , is described, with Baalzebubyouyiensis Zhao & Li, 2012 (♂♀, China, Vietnam and Laos) as the type species. Three species are included in Simonia gen. nov. , i.e., S.youyiensis (Zhao & Li, 2012) comb. nov. ex. Baalzebub , S.steineri Yu & Lin, sp. nov. (♀, Huapan, Laos), and S.sumatra Yu & Lin, sp. nov. (♀, Sumatra, Indonesia). A key to theridiosomatid genera endemic to the Oriental Realm and a key to species of the new genus are provided, as well as diagnoses, descriptions and a distribution map for the species of Simonia gen. nov.