Revision of the intertidal rove beetle genus Bryothinusa from Japan (Coleoptera: Staphylinidae: Aleocharinae)
Liu Tian-tian, Ono Hiroki, Maruyama Munetoshi
Acta Entomologica Musei Nationalis Pragae 61(1): 163-201, 2021
Published online: 7th May 2021
Views: 4496
Abstract: The Japanese species of the intertidal rove beetle genus Bryothinusa Casey,
1904 are revised. Of 17 recognized species in total, six known species (B.
algarum Sawada, 1971, B. gangjinensis Ahn & Jeon, 2004, B. minuta (Sawada,
1955), B. nakanei (Sawada, 1955), B. sakishimana Sawada, 1991, B. tsutsuii
(Sawada, 1955)) are redescribed and nine new species (B. aikoae sp. nov. from
Honshû, B. constricta sp. nov. from Honshû, B. fulvipennis sp. nov. from
Honshû and Shikoku, B. hokkaidensis sp. nov. from Hokkaidô and Kyûshû, B.
itsuroi sp. nov. from Honshû, Kyûshû and Nansei-shotô, B. moriguchii sp.
nov. from Nansei-shotô, B. nigra sp. nov. from Honshû, Shikoku, Kyûshû and
Nansei-shotô, B. okinawana sp. nov. from Nansei-shotô, B. yoshigoui sp. nov.
from Honshû) are described. Additional descriptions and records for the two
species (B. koreana Ahn & Jeon, 2004 and B. japonica Liu, Ono &
Maruyama, 2020) which are currently described/redescribed are given.
Mouthparts and sexual organs of both sexes of all species are illustrated.
A key to the Japanese species and distribution map of these species are
provided. The habitats and behaviour of some representatives are reported, and
the distributional range related to flight ability is discussed.
Key words: Coleoptera, Staphylinidae, Aleocharinae, Myllaenini, new species, taxonomy,
intertidal, seashore, Oriental Region, Palearctic Region
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