Tychius

Head between eyes usually as wide as rostrum at base; eyes flat to convex. Antennal funicle 6–7 segmented, first and second segments elongate, others gradually more transverse. Rostrum usually sexually dimorphic in shape and length. Elytra from short, oval or subglobose, to long, subelliptical or rectangular; elytral interstriae flat or a little convex, wider than striae that are formed by deep and regular punctures, being more or less visible between the vestiture. Abdomen with pygidium in male mostly hidden by elytra and approximately perpendicular to longitudinal axis of body and with a transverse ridge. Tarsi with more or less elongate articles, third tarsomere weakly to strongly bilobed; claws usually with two more or less long medial teeth. Male genitalia with body of penis variously shaped, more or less sclerotized on dorsum, usually symmetrical, with long setae at its apex on ventral part; apodeme nearly of same length as body of penis.

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