Coccid pests of flower and medicinal crops in Tamil Nadu

摘要

Coccids (Scales and mealy bugs) have attained serious pest status on a wide range of host plants. They have been recorded from 60 plant species of flower and medicinal crops. Most of these belonged to Malvaceae, Solanaceae, Asteraceae, Euphorbiaceae, and Amaranthaceae families, where in economic damage was observed on these flower and medicinal crops. Major species observed included Phenacocccus solenopsis Tinsley, P. madeirensis (Green), Rastrococcus iceryoides (Green), Nipaecoccus viridis (Green), Dysmicoccus brevipes (Ckll.), Coccidohystrix insolita (Green), Labioproctus polei (Green), Saissetia coffeae (Walker), Saissetia oleae (Bernard), Parasaissetia nigra Nietner, Ceroplastes ceriferus (Fabricius), Megapulvinaria maxima (Green), Eucalymnatus stellatus (Signoret), Cerococcus indicus Maskell, Ceroplastodes cajanii (Maskell), Hemilecanium imbricans (Green), Aonidiella aurantii (Maskell), Hemiberlesia lataniae (Signoret), Icerya aegyptiaca (Douglas), I. purchasi Maskell and Conchaspis angraeci (Ckll.)