Figure 5. Head and pronotum, dorsal view. (A, B) O. sakaerat; (C, D) O. taksini; (E, F) O. tomokunii; (G, H) O. filiferus; (I, J) O. machaerus; (K), O. inthanonus; (L) O. crassus; (M, N) O. maxidentex; (O, P) O. tantillus; (Q, R) O. dravidiensis.
Kazutaka Yamada
Tokushima Prefectural Museum, Bunka-no-Mori Park, Tokushima, Japan;
Tomohide Yasunaga
American Museum of Natural History, New York, NY, USA; & Plant Protection Division, Myanmar Ministry of Agriculture & Irrigation, c/o Japan International Cooperation Agency (JICA), Yangon, Myanmar;
Taksin Artchawakom
Sakaerat Environmental Research Station (SERS), Thailand Institute of Scientific and Technological Research (TISTR), Ministry of Science and Technology, Nakhon Ratchasima, Thailand