Two new genera and four new species of jumping spiders (Araneae: Salticidae: Dendryphantini)

Abstract

The new genera Ahijuna gen. n. and Lumptibiella gen. n. (Araneae, Salticidae) including four new species, A. patoruzito sp. n., L. camporum sp. n., L. chacoensis sp. n. and L. paranensis sp. n., are described from specimens recently discovered in areas endangered by wildfires in Argentina. The species of these new genera share the typical structure of the genitalia with many Dendryphantini Menge. However, the combination of a distinct atrium on the anterior half of epigynal field for both genera, a small body size, flattened carapace shape, and a distinctive dorsal coloration pattern in the case of Ahijuna gen. n., and the possession of a lump-shaped process on the middle of the male tibia retrolateral side in the case of Lumptibiella gen. n., are not found in other Neotropical dendryphantine. Available ecological data suggests that most of these species inhabit grasslands. Full colored photographs are provided.