Author(s):

P Roselin, T Shivashankar, RR Rachana, H Sujay and S Eurekha

Abstract: Extensive random surveys were conducted during 2016-17 in southern dry zone of Karnataka to study the diversity of thrips. Out of 60 different plants collected during the survey, 33 species have showed the presence of thrips. The study revealed the occurrence of 21 thrips species belonging to 15 genera. Out of 15 genera, 4 belonged to the suborder, Tubulifera whereas, 11 belonged to the suborder, Terebrantia. Flower inhabiting thrips species are: <em>Ayyaria chaetophora </em>Karny,<em> Frankliniella schultzei </em>(Trybom), <em>Haplothrips ganglbaueri</em> Schmutz, <em>Megalurothrips usitatus </em>(Bagnall), <em>Microcephalothrips abdominalis </em>(D. L. Crawford), <em>Rhipiphorothrips cruentatus </em>Hood, <em>Scirtothrips bispinosus </em>(Bagnall), <em>Scirtothrips dorsalis </em>Hood, <em>Thrips flavus </em>Schrank<em>, Thrips florum</em> Schmutz, <em>Thrips hawaiiensis </em>(Morgan), <em>Thrips orientalis</em> (Bagnall), <em>Thrips palmi </em>Karny and <em>Thrips tabaci </em>Lindeman. Two tubuliferan species <em>viz., Gynaikothrips bengalensis </em>Ananthakrishnan, and <em>Gigantothrips elegans </em>Zimmermann were found to be associated with the leaves of <em>Ficus benjamina. </em>Thrips belonged to 2 tubuliferan genera and 6 terebrantian genera were collected from different weed hosts. The terebrantian thrips collected on weeds are: <em>Anaphothrips sudanensis </em>Trybom, <em>Arorathrips mexicanus </em>(D. L. Crawford), <em>Exothrips hemavarna </em>(Ramakrishna &amp; Margabandhu), <em>Kurtomathrips morrilli </em>Moulton, <em>M. abdominalis</em> and <em>T. orientalis</em> whereas, <em>Haplothrips gowdeyi </em>(Franklin), <em>H. ganglbaueri</em> and <em>Xylaplothrips ligs </em>Ananthakrishnan &amp; Jagadish were the tubuliferan members collected.

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