Some observations on the biology of Camisia carolli (Acari: Oribatida [sic])

Camisia carrolli was found to be one of the most abundant miteson Douglas fir (Pseudotsuga menziesii (Mirb.) Franco) in the western CascadeMountains of Oregon. It occurs at maximum density in the upper portion of thecanopy. Five to eight years-old twigs with needles still attached constitute its opti-mum microhabitat. This mite is mycophagous and probably feeds on pioneerfungi colonizing young twigs. Fungi and other detritus cover it completely andmay help it endure drought