SNSB-Zoologische Staatssammlung München, Münchhausenstraaße 21, 81247 München, Germany. .
Division of Forest Protection, Taiwan Forestry Research Institute, Taipei, Taiwan. .
Zootaxa. 2021 Jun 18;4990(1):23-44. doi: 10.11646/zootaxa.4990.1.2.
Bidessus migrator Sharp, 1882, so far assigned to Clypeodytes Régimbart, 1894, and widely distributed in Australia and New Guinea, is re-described. Based on morphological and molecular evidence, it is here transferred to Leiodytes Guignot, 1936. Bidessus loriae Régimbart, 1892 is found to be a junior subjective synonym of L. migrator. We describe the following new species: Leiodytes surianiae sp. nov. (eastern New Guinea, northeast coast of Queensland), and Leiodytes wattsi sp. nov. (southern New Guinea and Darwin area to northern Queensland). We delineate the species using characters such as male genital structure and beetle size, shape and color pattern. Mitochondrial Cox1 data for 27 individuals, representing all three Australasian species, were generated and revealed clusters congruent with the morphological evidence. In Australia Leiodytes only occurs in the tropical and subtropical northern part of the continent. None of the species is endemic to Australia. The species are mainly lentic, occurring in seasonal swamps, flooded meadows and pools of intermittent rivers and temporary creeks.
Bidessus migrator Sharp, 1882，迄今为止被归入 Clypeodytes Régimbart, 1894，并广泛分布于澳大利亚和新几内亚，现被重新描述。基于形态学和分子证据，它被归入 Leiodytes Guignot, 1936。Bidessus loriae Régimbart, 1892 被发现是 L. migrator 的一个次级同物异名。我们描述了以下新种：Leiodytes surianiae sp. nov.（新几内亚东部，昆士兰东北海岸）和 Leiodytes wattsi sp. nov.（新几内亚南部和达尔文地区至昆士兰北部）。我们使用雄性生殖器结构和甲虫大小、形状和颜色图案等特征来描绘这些物种。我们为代表所有三个澳大拉西亚物种的 27 个个体生成了线粒体 Cox1 数据，这些数据显示出与形态学证据一致的聚类。在澳大利亚，Leiodytes 仅分布于该大陆的热带和亚热带北部。没有一个物种是澳大利亚特有的。这些物种主要是淡水生物，存在于季节性沼泽、泛滥的草地以及间歇性河流和临时小溪的水池中。
