2026-10-28 琉球大学
図1. 上：西表島産シロオビクチカクシゾウムシの成虫（撮影：保坂恭吾）。
下：石垣島で観察された、リュウキュウガキの枯死木中のシロオビクチカクシゾウムシ成虫（撮影：小島弘昭）。
＜関連情報＞
日本の南西部、八重山諸島から採集されることの少ないゾウムシCyamobolus sturmii Boheman, 1837 (鞘翅目、ゾウムシ科、モリーティナエ亜科)の標本に基づく記録、西表島からの初記録、および成虫の微生息地に関する考察 Specimen-based records of the rarely collected weevil Cyamobolus sturmii Boheman, 1837 (Coleoptera, Curculionidae, Molytinae) from the Yaeyama Islands, southwestern Japan, with the first record from Iriomote Island and notes on adult microhabitat
Kyôgo Hosaka, Nakatada Wachi, Kosei Hirai, Shu Arai, Hiroaki Kojima
Check List Published: 16 Oct 2026
DOI:https://doi.org/10.15560/22.5.1009
Abstract
We report recent specimen-based records of the rarely collected weevil Cyamobolus sturmii Boheman, 1837 from Ishigaki Island, together with the first record from Iriomote Island, in the Yaeyama Islands, southwestern Japan. Adults were found during the daytime inside presumed emergence holes in dead wood of Diospyros maritima Blume on Ishigaki Island, providing new information on adult microhabitat. These records update the known distribution of C. sturmii in Japan and illustrate the value of documenting specimen-based occurrence data for species poorly represented in public biodiversity databases.
