台灣中部水棲甲蟲多樣性分析與麗陽牙蟲屬分類研究 (昆蟲綱: 鞘翅目)

Aquatic beetles diversity analysis of middle of Taiwan and taxonomic study of Helochares (Insecta: Coleoptera)

劉興哲(HSING-CHE LIU)

指導教授 ： 章日行 ； 李奇峯

朝陽科技大學/理工學院/環境工程與管理系/碩士(2020年)

摘要

水生甲蟲是淡水中的常見昆蟲，具有抑制病媒蚊的能力。然而，水生甲蟲正在逐漸消失，因此在台灣中部水稻田中對水生甲蟲進行調查。採集期間為2019年，計有3科25種，並比較近海地區和內陸地區，共採集1098隻水生甲蟲，研究結果表明在台灣中部地區的近海地區的辛普森多樣性指數和物種數均優於內陸地區，並在台灣首次記錄到Hydrochara affinis (Sharp, 1873)。另外，基於採集的材料和博物館標本，修訂台灣的麗陽牙蟲屬Helochares Mulsant, 1844。共有6個物種: H. anchoralis Sharp, 1890、H. atropiceus Regimbart, 1903、H. lentus Sharp, 1890、H. neglectus (Hope, 1845)、H. pallens MacLeay, 1825和H. sauteri Orchymont, 1943。提供台灣分布圖和該屬的檢索表，並根據日本與那國島的標本，證實H. uenoi Matsui, 1995為H. sauteri Orchymont, 1943的同物異名。此外根據台灣採集的標本，描述了H. atropiceus Regimbart, 1903的幼蟲形態和頭部特徵。

關鍵字

水生昆蟲 ； 生物多樣性 ； 牙蟲科 ； 新紀錄 ； 幼蟲

並列摘要

Aquatic beetles are common insects in freshwater and have the ability to suppress vector mosquitoes. However, the aquatic beetles are gradually disappearing. Therefore, aquatic beetles in the rice fields of middle of Taiwan. The collection period was 2019, total 25 species belonging to 3 families. We compare the near sea area and the inland area. In total 1098 aquatic beetles individuals were collected, the results showed that the Simpson’s index and species number of near sea area are better than that of inland area in the middle of Taiwan, and first records Hydrochara affinis (Sharp, 1873) from Taiwan. In addition, the water scavenger beetle genus Helochares Mulsant, 1844 of Taiwan is reviewed based on freshly collected material and museum specimens. 6 species are recognized: H. anchoralis Sharp, 1890, H. atropiceus Regimbart, 1903, H. lentus Sharp, 1890, H. neglectus (Hope, 1845), H. pallens MacLeay, 1825 and H. sauteri Orchymont, 1943. A distribution map and key to Taiwanese species of the genus are provided. Based on the specimen of Yonaguni Island, Japan, confirmed H. uenoi Matsui, 1995, syn. nov. is synonymized with H. sauteri Orchymont, 1943. The morphology and head chaetotaxy of the larvae of H. atropiceus Regimbart, 1903 are described based on specimens collected in Taiwan.

並列關鍵字

aquatic insects ； biodiversity ； Hydrophilidae ； new record ； larva

參考文獻

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