Pentachares Li & Guo 2022, gen. nov

Genus Pentachares Li & Guo gen. nov. urn:lsid:zoobank.org:act: 080C87A4-FFE2-459E-AC36-6A414126B7F0 Type species Pentachares sinensis Li & Guo gen. et sp. nov. Etymology Five-segmented palp is the main diagnosis feature of this new genus. “Pent-” means five, just represents the five segments of palp in this new genus. Diagnosis Characters of Rhyncholimnocharinae; palp five-segmented, P-V attached to the middle surface, rather than the distal end of P-IV; dorsalia absent; without swimming setae on legs. Habitat Same as subfamily. Distribution Oriental realm. Remarks The new genus presents the diagnostic features of both two subfamilies in Limnocharidae: a long tube of protrusible integument proves that it belongs to Rhyncholimnocharinae, meanwhile the palp with five segments indicates it is from Limnocharinae. The phylogenetic value of the palp-fused as a character has been questioned (Cook 1974; Gerecke et al. 2020). Therefore, we arrange the new genus in Rhyncholimnocharinae, according to the feature of a tubular extension of integument.