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Insect with a length of 6.5 to 14 mm. Oblong, depressed dorsally, black, covered dorsally with oval, strongly imbricate scales, gray, yellow or brown, with some more numerous bristles lying down, arched, not very distinguishable in profile, irregularly arranged in two or three rows in the elytral interstriations; ventrally covered with the same scales, paler, generally denser with many fine hairs; elytral pattern composed of two oblique clear spots, located in front of the middle, and a common, wavy, transverse postmedian fascia, also clear; This design is usually surrounded by a brown or black border. Legs brown, densely scaled. Escape and antenna club with a brown clothing; the ashen funiculus. Abdomen with two brown spots located at the base of the 1st segment and two other larger ones, occupying the 3rd and 4th segments in the middle and sometimes exceeding in front at the base of the 2nd. Densely scaly face, like the head, provided with a deep median groove that reaches the forehead, the interocular fossa, and a lateral groove, which ends in front of the eye. Prothorax presenting deep, strongly wavy or subrectilinear longitudinal folds, the median groove wider, often forming oval or oblong dimples in front and behind. Elytra oblong, subparallel to the posterior third; strongly striated-dotted, the points large, tight, each provided with a small oval scamula; narrow, convex interstriations. Setosulate legs; femora generally with a clear ring towards its apical third. Male: Base of the metasternum and the first two abdominal segments widely provided with points together.
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