Pentachares Li & Guo, 2022

Li, Hai-Tao, Jin, Dao-Chao, Yi, Tian-Ci & Guo, Jian-Jun, 2022, Contributions to the knowledge of Eylaoidea (Acari: Hydrachnidiae) from China, European Journal of Taxonomy 787 (1), pp. 53-70 : 61

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.