Abstract

ORDAZ-SILVA, Salvador et al. Predation of Pselliopus latispina (Hemiptera: Reduviidae) on Tetranychus urticae (Acari: Tetranychidae). Acta Zool. Mex [online]. 2014, vol.30, n.3, pp.500-507. ISSN 2448-8445.

The predatory capacity of Pselliopus latispina Hussey (Hemiptera: Reduviidae) on two spotted mite Tetranychus urticae Koch (Acari: Tetranychidae) under laboratory conditions is reported. Nymphs of P. latispina first instar were used, from egg masses collected in the Sierra de Alvarez, San Luis Potosi, on junipers trees Juniperus flaccida Schltdl. (Cupressaceae) and adult females of T. urticae developed these in bean plants Phaseolus vulgaris L. (Fabaceae), originated from collections of Huachichil, Arteaga; Coahuila on apple orchards Malus domestica Borkh. (Rosaceae). Individual nymphs of P. latispina were placed with 50 adult females of T. urticae in Petri dishes; this later was done in order to observe feeding behavior of nymphs on mites. Predation data were analyzed by ANOVA and mean separation by Tukey's multiple range. After 8, 16 and 24 hours, predation was observed, and mite mortality was quantified. Predation of P. latispina increased proportionally with the exposure time, with an average consumption of20, 37, and 48 mites at 8, 16, and 24 hours respectively, this fact provided a new option for managing two spotted mite pest.

Keywords : Assassin bug; two spotted mite; biological control.

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