Abstract
Specimens of Pseudoglaridacris laruei (Lamont, 1921) Oros, Uhrovič, Scholz, 2018 (Caryophyllidae) were first described as Caryophyllaeus laruei Lamont, 1921, redescribed as Glaridacris laruei Hunter, 1927, and subsequently designated as Pseudoglaridacris laruei Oros, Uhrovič, Scholz, 2018, were collected and examined from the white sucker Catostomus commersoni Lacépède and the lake chubsucker Erimyzon sucetta Lacépède in Silver and Tichigan lakes, SE Wisconsin. We update our first and only 1986 redescription of this Wisconsin population, with new observations and measurements, and compare with those in the original and other descriptions. The morphology of P. laruei is revisited using light microscopy revealing new features. Emphasis is placed on the morphological variability of its scolex and reproductive structures throughout development using many microscopic images. Measurements of 100 specimens and the re-examination of 25 more specimens from both lakes provided an opportunity to review the taxonomy and description of the species, distinguish locality differences, and correct and update other statements and concepts by other observers.
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