Abstract
Species of the genus Phaenochilus are reviewed, keyed, and illustrated, and an annotated checklist provided. A newspecies, Phaenochilus kashaya n. sp., is described from Thailand. This species feeds on an invasive pest of cycads, thecycad aulacaspis scale, Aulacaspis yasumatsui Takagi (Hemiptera: Sternorrhyncha: Diaspididae). The economic importance of cycads and cycad aulacaspis scale is discussed. A taxonomic history of Phaenochilus is provided.References
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