Experimental and Applied Acarology (2014) 64, 287-298

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Haleigh A. Ray and Marjorie A. Hoy (2014)
Evaluation of the predacious mite Hemicheyletia wellsina (Acari: Cheyletidae) as a predator of arthropod pests of orchids
Experimental and Applied Acarology 64 (3), 287-298
Abstract: The cheyletid predator Hemicheyletia wellsina was found in association with orchid pests in a Florida greenhouse. The life history of H. wellsina was determined using the two-spotted spider mite, Tetranychus urticae, as prey in the laboratory. Hemicheyletia wellsina is arrhenotokous, with mated females producing a female-biased sex ratio of 3.4:1. Adult longevity averaged 30.2 days, with females producing an average of 18.5 eggs. Adult females live up to 17 days without food, surviving an average of 9.7 days. Hemicheyletia wellsina will readily feed on the phytoseiid Metaseiulus occidentalis, suggesting intraguild predation by H. wellsina on phytoseiids could be important in pest management programs. The average prey consumption of H. wellsina is 1.5 T. urticae females per day. The results of this study provide information on an under-studied group of mite predators. Although H. wellsina does not have the qualities that would be necessary for its use in an augmentative or classical biological control program, its use in naturally occurring biological control could be beneficial.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Haleigh A. Ray, Marjorie A. Hoy

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Tetranychus urticae
Galendromus occidentalis (predator)
Hemicheyletia wellsina (predator) Tetranychus urticae U.S.A. (SE)