A new species of Chaeridiona Baly (Coleoptera: Chrysomelidae: Cassidinae: Oncocephalini) infesting ginger (Zingiber officinale Roscoe) and turmeric (Curcuma longa L.) in India and redescription of Chaeridiona pseudometallica Basu Author Shameem, K. M. Author Prathapan, K. D. text Zootaxa 2014 3815 4 575 582 journal article 45453 10.11646/zootaxa.3815.4.7 f18016d6-5d8a-419c-a70e-dc3ea2c87937 1175-5326 228627 74363D9C-DD15-419F-B4E8-33A604DD71EC Key to species of Indian Chaeridiona Baly 1 Exterior apical angle of elytra angulate or denticulate (Figs 1 & 2)............................................... 2 - Exterior apical angle of elytra rounded (Figs 6 & 7)......................................................... 3 2 Dorsum dark brown with purplish tinge; elytral costae 1–4 interrupted................................. C. picea Baly - Dorsum metallic emerald green to dull green except coppery brown laterally and preapically; elytral costa three interrupted.......................................................................................... C. mayuri n. sp. 3 Elytra distinctly tuberculate; costae not visible between tubercles; dorsum brown, without metallic sheen................................................................................................. C. tuberculata Uhmann - Elytra not tuberculate; costae visible; dorsum with metallic sheen.............................................. 4 4 Anterolateral pronotal angle with single tooth (Fig. 8); length 3.2–3.5 mm ..................... C. pseudometallica Basu - Anterolateral pronotal angle with two teeth (Fig. 3); length 4.3–5.0 mm.............................. C. metallica Baly