Four new Australo-Oriental species of Paraneseuthia (Coleoptera: Staphylinidae: Scydmaeninae)
Acta Entomologica Musei Nationalis Pragae 59(2): 491-498, 2019
Published online: 30th October 2019
Published in print: 31st December 2019
Abstract: Four new species of the eutheiine genus Paraneseuthia Franz, 1986 are
described: P. luzonica sp. nov. (the Philippines), P. kaibesariana sp. nov.
(Indonesia: Kai Besar Is.), P. tanimbariana sp. nov. (Indonesia: Yamdena Is.),
and P. morobensis sp. nov. (Papua New Guinea). Externally, these species share
many characters with members of the SE Asian, Sundaland group within the genus.
However, male genitalic structures of some of them resemble aedeagi of
Australian Paraneseuthia, supporting previous phylogeographic hypotheses that
assumed the origins of both north-eastern (Far Russian and Japanese) and
south-eastern (Australian and Melanesian) Paraneseuthia from a Sundaland
ancestor. The aedeagus of P. morobensis sp. nov. shows intermediary shape and
structures between those of P. quadrifoveata Jałoszyński, 2010 of Borneo,
Sabah, and that of P. levigata Jałoszyński, 2010 of eastern Papua New Guinea.
The aedeagus of P. tanimbariana sp. nov., in turn, shows a striking similarity
to that of the northern Australian P. angustifurculata Jałoszyński, 2013 and
other species known to occur in Australia. The male genitalia of P. luzonica sp.
nov. (the first species discovered in the Philippines), and especially of P.
kaibesariana sp. nov., add unique features to the already known, great
morphological diversity of the SE Asian members of Paraneseuthia that occupy the
presumable evolutionary cradle of this genus.
Key words: Coleoptera, Scydmaeninae, Cephenniitae, Eutheiini, Paraneseuthia, taxonomy, Australian Region, Oriental Region