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1 September 2009 First Nearctic Records of Oliveiriella Wiedenbrug and Fittkau, with New Distributional Records for Two Other New World Species of Orthocladiinae (Diptera: Chironomidae)
Brian J. Krestian, Ely Kosnicki, Patrice H. Spindler, Shann Stringer, John H. Epler
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Abstract

Taxonomic and distributional information need to be constantly updated as federal, state, and local agencies continue to use aquatic macroinvertebrates as biological indicators of water quality. While processing benthic macroinvertebrate samples provided by federal and state agencies, production taxonomists at EcoAnalysts, Inc. encountered larvae and pupae of the Neotropical chironomid Oliveiriella Wiedenbrug and Fittkau (Orthocladiinae) and Onconeura semifimbriata (Sæther) (Orthocladiinae) from sites in New Mexico and Arizona, USA. These occurrences represent the first Nearctic records of Oliveiriella, establishing a New World distribution, and expand the Nearctic range of Onconeura semifimbriata. We also identified larvae of Tempisquitoneura merrillorum Epler (Orthocladiinae) from 1 site in Nevada, 1 site in Utah, and 6 sites in Arizona, USA. These records expand the Nearctic range for T. merrillorum. These genera are very similar in appearance to other commonly encountered Orthocladiinae genera, but only the larva of Tempisquitoneura is included in a current taxonomic key for North America.

Brian J. Krestian, Ely Kosnicki, Patrice H. Spindler, Shann Stringer, and John H. Epler "First Nearctic Records of Oliveiriella Wiedenbrug and Fittkau, with New Distributional Records for Two Other New World Species of Orthocladiinae (Diptera: Chironomidae)," Entomological News 120(4), 349-362, (1 September 2009). https://doi.org/10.3157/021.120.0402
Received: 3 September 2008; Accepted: 1 November 2008; Published: 1 September 2009
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