Seasonal Trap Abundance of Two Species of Psilochalcis Kieffer (Hymenoptera: Chalcididae) in Rangelands of the Eastern Great Basin of Utah, USA

Mark J. Petersen (), Val J. Anderson, Robert L. Johnson and Dennis L. Eggett
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Mark J. Petersen: Department of Plant and Wildlife Sciences, Brigham Young University, 4105 LSB, Provo, UT 84602, USA
Val J. Anderson: Department of Plant and Wildlife Sciences, Brigham Young University, 4105 LSB, Provo, UT 84602, USA
Robert L. Johnson: Department of Biology, Brigham Young University, 4102 LSB, Provo, UT 84602, USA
Dennis L. Eggett: Department of Statistics, Brigham Young University, 2152F WVB, Provo, UT 84602, USA

Land, 2022, vol. 12, issue 1, 1-11

Abstract: Two species of Psilochalcis (Hymenoptera: Chalcididae) wasps occurring in the Great Basin region of the western United States were sampled from three locations in central Utah (USA) over a two-year period using Malaise traps. Each location is composed of four contiguous habitat types: pinyon/juniper ( Pinus edulis or P. monophylla and Juniperus osteosperma ), sagebrush ( Artemisia tridentata) , cheatgrass ( Bromus tectorum ), and crested wheatgrass ( Agropyron cristatum) . Seasonal trap abundance for each Psilochalcis species was determined. Psilochalcis minuta Petersen and Psilochalcis quadratis Petersen occur in highest abundance from mid-May to early August. Psilochalcis minuta demonstrates a significant association with pinyon/juniper habitat, specifically at the Utah; Juab County, Yuba Valley sample site, whereas P. quadratis demonstrates a significant association with cheatgrass ( Bromus tectorum ) habitat at the same location.

Keywords: chalcidid wasps; malaise trap; pinyon/juniper; cheatgrass; crested wheatgrass; habitat; ecological relationships (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2022
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