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First discovery of S tephanus J urine ( H ymenoptera: S tephanidae) in J apan, with description of a new species from A nijima I sland of O gasawara I slands
Author(s) -
Watanabe Kyohei,
Achterberg Cornelis
Publication year - 2014
Publication title -
entomological science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 28
eISSN - 1479-8298
pISSN - 1343-8786
DOI - 10.1111/ens.12065
Subject(s) - biology , hymenoptera , fauna , genus , zoology , ecology
The genus S tephanus J urine (in P anzer) is newly recorded from J apan and is represented by a new species. S . anijimensis sp. nov. from A nijima I sland of the O gasawara Islands. This species resembles S . tridentatus van A chterberg & Y ang from the O riental part of C hina, but can be distinguished by the combination of following characters: pronotum with a cavity under pronotal fold (cavity absent in S . tridentatus ); hind femur comparatively slender, 4.8–5.1 times as long as maximum width (about 4.1 times in S . tridentatus ); apical 0.5 of hind femur black or blackish‐brown (more or less yellowish in S . tridentatus ). This new species was not found from other islands of the O gasawara I slands, in which fauna is being severely endangered mainly due to predation by the introduced green anoles. Recently, it was introduced into A nijima I sland in March 2013 and thus the extinction risk of this species is very high on this island.