New Zealand Plant Protection 62 (2009): 63-68
Yellow tree lupin (Lupinus arboreus), an abundant weed in New Zealand, is host to several economically important thrips species. The diversity and relative abundance of thrips found on yellow tree lupin were measured weekly via hand-collections over the 2008/09 summer at two locations in Canterbury separated by 8 km. From the 1540 thrips that were collected and slide-mounted, eight thrips species were identified. The most abundant species was New Zealand flower thrips (Thrips obscuratus), followed by onion thrips (Thrips tabaci), the lupin strain of western flower thrips (Frankliniella occidentalis), Thrips vulgatissimus, Thrips australis, Limothrips cerealium, Chirothrips manicatus and Tenothrips frici. The largest variation in relative abundance occurred in early December, with onion thrips dominant at Killinchy and western ﬂower thrips dominant at Rakaia. In late December at Rakaia, the dominant species shifted to New Zealand ﬂower thrips. This indicates considerable spatial and temporal variation in relative abundance of thrips species.
Keywords: western flowers thrips, Frankliniella occidentalis, New Zealand flower thrips, Thrips obscuratus, onion thrips, Thrips tabaci, seasonal fluctuation.
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Copyright © 2009 New Zealand Plant Protection Society (Inc.).