Seasonal Abundance of Thysanoptera Species inTillandsia usneoides(Poales: Bromeliaceae)

Abstract

Spanish moss, Tillandsia usneoides (L.) (Poales: Bromeliaceae), is widely distributed in the southeastern United States. A diversity of arthropod species from numerous taxa are known to inhabit this common epiphytic plant. Thysanoptera species inhabiting Spanish moss were sampled monthly over the course of a year from trees in 4 different genera and included 10 species of thrips from 8 genera and 3 families represented. Breeding populations of predatory Karnyothrips (Phlaeothripidae) were common in Spanish moss during all months of the year. The adults of 2 phytophagous species of Frankliniella (Thripidae) were common in the spring months, but only a few larvae were collected over the course of the year. The adults of other species collected were: Heterothrips quercicola J. C. Crawford (Heterothripidae); Chilothrips pini Hood, Neohydatothrips variabilis (Beach), and Selenothrips rubrocinctus (Giard) (Thripidae); and Hoplandrothrips pergandei Hinds and Liothrips ocellatus Hood (Phlaeothripidae). Although a diverse group of phytophagous thrips species inhabited Spanish moss, there was little evidence that it was a host. It may simply have been a temporary shelter with no other biological significance. The predatory thrips were abundant probably feeding on the diverse group of small arthropods that inhabit Spanish moss.