Favored by hot, dry conditions, hop yards in southern Idaho can experience periodic population explosions of the spider mite Tetranychus urticae (Koch) (Acariformes: Prostigmata: Tetranychidae). We were interested in determining if the abundance and diversity of this pest and its natural enemies differed between cultivated hop yards and unmanaged “feral” sites. Leaf and vacuum sampling were used to collect arthropods. Characters including plant size and architecture, leaf area, leaf water content and leaf protein content were measured to aid in evaluating differences in fauna between feral and cultivated sites.
Species 1: Prostigmata Tetranychidae Tetranychus urticae (two-spotted spider mite)
Species 2: Mesostigmata Phytoseiidae Galendromus occidentalis
Species 3: Mesostigmata Phytoseiidae Neoseiulus fallacis
Keywords: Humulus lupulus
The ESA 2001 Annual Meeting - 2001: An Entomological Odyssey of ESA