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Collection records and distributional updates of six rarely collected North American large river mayfly taxa (Insecta: Ephemeroptera)
Aquatic Insects ( IF 0.8 ) Pub Date : 2020-04-02 , DOI: 10.1080/01650424.2020.1739311
Audrey B. Harrison 1 , Lauren H. Leonard 1 , Bill P. Stark 2 , Paul K. Lago 3
Affiliation  

Abstract Sampling the Lower Mississippi River (LMR) main channel and secondary channels during 2014–2015 and subsequent dietary analysis of river sturgeons (Scaphirhynchus spp.) captured in the Missouri River resulted in the collection of larvae of six mayfly species that specialise in large river habitats. Some of these mayflies are found in large numbers when encountered, while others are infrequently collected and always in low numbers. Two species, Raptoheptagenia cruentata (Walsh, 1863) and Cercobrachys sp. cf. serpentis Soldán, 1986 (Insecta: Ephemeroptera) are reported for Mississippi for the first time. Pseudiron centralis McDunnough, 1931 and R. cruentata are reported for Arkansas for the first time. Updated North American distributions are presented and include records available in major collections and published literature. The apparent restriction of these taxa to large river environments highlights the need for implementation of conservation and restoration efforts to ensure their persistence.

中文翻译:

六种罕见的北美大河蜉蝣分类群(昆虫纲:蜉蝣)的收集记录和分布更新

摘要 2014-2015 年对下密西西比河 (LMR) 主河道和次要河道进行采样,随后对在密苏里河捕获的河鲟 (Scaphirhynchus spp.) 进行了饮食分析,结果收集了六种专门捕食大河的蜉蝣幼虫。栖息地。这些蜉蝣中的一些在遇到时会大量发现,而其他蜉蝣很少被收集并且总是数量很少。两个物种,Raptoheptagenia cruentata (Walsh, 1863) 和 Cercobrachys sp。参见 serpentis Soldán, 1986 (Insecta: Ephemeroptera) 首次在密西西比被报道。Pseudiron centralis McDunnough, 1931 和 R. cruentata 首次在阿肯色州被报道。提供了更新的北美发行版,包括主要收藏和已出版文献中的可用记录。
更新日期:2020-04-02
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