Body length without head 5.8-6.4 mm. Body relatively narrow, length/width ratio 1.58-1.69. Metasternal wing relatively narrow, WC/WS 4.1-4.5. Elytron with preapical spot normally large, sometimes absent; basal fascia normally interrupted only sublaterally, sometimes also medially. Elytron in female with meshes of microreticulation longitudinally stretched and deeply incised; in Sumatra females reticulated all over the elytron whereas in females from other regions the anterior and internal margins and broadly smooth and with reticulation reduced. Penis with left side abruptly reduced subapically, forming a more or less right angle. Male sternum 6 with central smooth area narrower than lateral striate area that has 12-14long striae.