Submitted to: Proceedings of the Entomological Society of Washington
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/17/2007
Publication Date: 1/3/2008
Citation: Nickle, D.A. 2008. Commonly intercepted thrips at u.s. ports of entry from africa, europe, and the mediterranean. iii. the genus thrips linnaeus, 1758 (thysanoptera: thripidae). Proceedings of the Entomological Society of Washington. 110:165-185.
Interpretive Summary: Thrips are minute insects that commonly occur on agricultural crops, grains, and ornamental flowers, and many are economic pests. Other species have been implicated as vectors of several plant viruses. Because of their small size and potential for causing agricultural damage if they gain access into the United States, great care must be given to identifying these insects to species level as they are intercepted. This paper provides a review of the 18 most agro-economically important species of the genus Thrips from Europe, Africa, and the Mediterranean Region. It includes distributions, host plants, and an assessment of pest potential and likelihood of being intercepted at U.S. ports-of-entry. This paper will be of importance to port identifiers and others needing to identify agriculturally important thrips.
Technical Abstract: A total of 130 species of thrips occurring in Africa, Europe, and the Mediterranean region were intercepted by U. S. agricultural quarantine officers in shipments of plants and cut flowers at the various ports of entry in the United States from 1983 to 1999. Of the 24 most intercepted species of thrips encountered by port identifiers during this period, 10 of them were species of the genus Thrips Linnaeus, 1758 (T. tabaci Lindeman, T. fuscipennis (Haliday), T. major (Uzel), T. vulgatissimus (Haliday), T. meridionalis (Priesner), T. flavus Schrank, T. atratus (Haliday), T. simplex (Morison), T. nigropilosus Haliday, and T. australis (Bagnall). This paper is Part III of a guide to the identification of thrips coming into this country from those regions; it uses keys, line drawings, and scanning electron micrographs to identify 18 commonly intercepted species of the genus Thrips, which is characterized by the presence of ctenidia located posteriad of abdominal spiracle VIII. Although it is designed primarily to aid the identification capabilities of the U.S. Department of Agriculture, Animal and Plant Health Inspection Service (USDA, APHIS) identifiers at U.S. ports of entry, those interested in thrips in general will also benefit from this information.