Ephemeroptera: Baetidae of Gunnison County, ColoradoPlauditus punctiventris
Blue Winged Olive, Small Minnow Mayfly (McDunnough) 1923
Updated 24 September 2024
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Plauditus virilis
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References
Lugo-Ortiz,CR; McCafferty,WP 1998 A new North American genus of Baetidae (Ephemeroptera) and key to Baetis complex genera. Entomological News 109 5, 345-353. Abstract
Page 347, Figures 1-11 has many illustrations of P. punctiventris.
McCafferty,WP; Durfee,RS; Kondratieff,BC 1993 Colorado mayflies (Ephemeroptera): an annotated inventory. Southwestern Naturalist 38 3, 252-274. PDF
Discussed as Baetis punctiventris. Quote from page 255 in the discussion of Baetis bicaudatus: "Another "two-tailed," trout-stream species of Baetis that may eventually be confirmed from Colorado is B. punctiventris (McDunnough), which has often been incorrectly known as Pseudocloeon edmundsi to Salmon River and Yellowstone fly fishermen." Then in the discussion about Baetis virile, which has since been renamed Plauditus virilis, they note "There remains, however some possibility that it (Plauditus virilis) is either a color variant of B. punctiventris or that it is an undescribed species."
McCafferty,WP and Meyer,MD 2007 Notes on geographic distribution. Check List, 3(1), pp.51-54. PDF
Quote from page 52:"Heterocloeon anoka (Daggy). OREGON: Deschutes County, Deschutes River, 14-IX-2000 (EPA); Grant County, Middle Fork John Day River, 16-VII-2001 (EPA).
WASHINGTON: Benton County, Amon Wasteway, Lower Amon, 1-IX-2000 (PERC: Purdue Entomological Research Collection, Purdue University, West Lafayette, Indiana); Spokane County, Little Spokane River, Milan, 25- VII-1962, adults (PERC).
The previous farthest west records of this species were Alberta (Webb and McCafferty 2003), and Idaho, given as the junior synonym Pseudocloeon edmundsi Jensen, by Jensen (1969) (see McCafferty 2006). Because the latter record was taken on the Snake River where it forms the border with Oregon, it is applicable to Oregon as well. It should be noted that historically H. anoka has been commonly misidentified as Plauditus punctiventris (McDunnough), and it appears that any previous far western records attributed to P. punctiventris are applicable to H. anoka (see McCafferty et al. 2005; McCafferty 2006). Based on our recent study of the original morphotype material held at the Royal Ontario Museum, we are here able to confirm that the larval description of P. punctiventris by Ide (1937) was incorrectly based on larvae of H. anoka."
McCafferty,WP and Provonsha, AV The Mayflies of North AmericaSpecies List (Version 8Feb2011)
Here is the geographic range and synonyms:
Plauditus punctiventris (McDunnough), 1923 [CAN:NE,NW;USA:NE,SE,SW]
* Baetis punctiventris (McDunnough), 1923 (comb.)
* Baetis sp. 1 McCafferty & Davis, 1992 (syn.)
* Cloeon punctiventris McDunnough, 1923 (orig.)
* Pseudocloeon myrsum Burks, 1953 (syn.)
* Pseudocloeon punctiventris (McDunnough), 1923 (comb.)
McCafferty,WP; Waltz,RD; Webb,JM and Jacobus,LM 2005 Revision of Heterocloeon McDunnough (Ephemeroptera: Baetidae). Journal of Insect Science, 5. PDF
Abstract: "The North American genus Heterocloeon McDunnough is redefined and shown to be distinct from other two-tailed Baetis complex genera, including Acentrella Bengtsson and Plauditus Lugo-Ortiz and McCafferty, which are also represented in North America. Heterocloeon is divided into three distinct subgenera, including Heterocloeon s.s., Iswaeon McCafferty and Webb, new subgenus, and Jubilatum McCafferty and Jacobus, new subgenus. Cladistic analysis supports the recognition of these subgenera within a genus defined by the presence of an apomorphic secondary ridge or denticle row on the larval claw; Heterocloeon s.s. and Jubilatum being sister groups, with their stem and Iswaeon branching basally within the Heterocloeon clade. The subgenus Heterocloeon, which possesses larval prothoracic osmobranchiae, retains the traditional species makeup of the genus. Iswaeon, which possesses a basally narrowed labial palp segment 2 and tibiae, and primary claw denticles of subequal length, includes a revalidated H. anoka (Daggy); H. davidi Waltz and McCafferty, new species; and H. rubrolaterale (McDunnough), new combination. Jubilatum, which posssesses an adenticulate secondary ridge on the claws and specialized tibial setation, includes H. amplum (Traver), new combination, and H. grande (Wiersema and Long), new combination. Previous confusion of H. anoka and Plauditus punctiventris (McDunnough) is also resolved, with adult color patterns in Iswaeon and Plauditus shown to be of diagnostic importance."
McDunnough,J 1923 New Canadian Ephemeridae with notes. Canadian Entomologist 55, 39-50.
Described as Cloeon punctiventris.
Zuellig,RE; Heinold,BD; Kondratieff,BC and Ruiter,DE 2012 Diversity and Distribution of Mayflies (Ephemeroptera), Stoneflies (Plecoptera), and Caddisflies (Trichoptera) of the South Platte River Basin, Colorado, Nebraska, and Wyoming, 1873-2010. U.S. Geological Survey Data Series 606, 257 p. PDF - caution 46MB
Quote from page :"Plauditus punctiventris (McDunnough, 1923)
Records: CO, Denver Cnty, S Platte R, Dartmouth Rd in Denver, 15-IX-2000, L, DDEH CO, Denver Cnty, S Platte R, Evans Ave in Denver, 9-IX-1999, L, DDEH CO, Larimer Cnty, Dale Crk, abv confl with N F Cache la Poudre R, 9-X-2003, L, CSUC CO, Larimer Cnty, N Frk Cache la Poudre R, Phantom Canyon Preserve, 16-VII-2000, L, CSUC
Remarks: An uncommon species in the SPRB, known only from collections since 1999. The genus Plauditus was established for certain North American Baetis complex species based on larval characteristics (Lugo-Ortiz and McCafferty, 1998)."
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