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Title: TWO NEW GENERA AND SPECIES OF MEALYBUGS (HEMIPTERA: COCCOIDEA: PSEUDOCOCCIDAE) THAT PRODUCE PLANT GALLS

Author
item Williams, Douglas
item Miller, Douglass

Submitted to: Proceedings of the Entomological Society of Washington
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/17/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary: Mealybugsareimportantpestsinagriculturalsystemsparticularlyonfruit trees, woody ornamentals, and in greenhouses. The purpose of this research is to describe two species that add a new dimension to the biological diversity of the mealybug fauna of the New World. These species are the firstreportedfromthisareatoformgallsontheirplanthosts.As potential pests of ornamental plants, it is important that these species b described so that they can be properly identified. The research suggests that the gall-forming habit may be much more common than previously surmised in the mealybugs of South America and alerts those studying biological diversity to look for more gall-forming species. This research is important to those involved in quarantine exclusion programs and in ornamentals and biological diversity research.

Technical Abstract: In the mealybug family Pseudococcidae, only 23 species in 14 genera are known to be gall formers. The purpose of this paper is to describe two new South American genera and species that cause galls; namely Miconicoccus ruebsaameni and Quadrigallicoccus lauracearum. The mealybugs are legless and apparently are related to Antonina Signoret. They are the first gall- forming mealybugs known from the continental land mass of the New World. A review of gall-forming mealybugs from other parts of the world is also presented.