How can you identify a Cigarette Beetle compared to a Merchant Grain Beetle?

The Cigarette Beetle can be identified by its smooth elytra and the 'C' shaped larva it produces. The smooth elytra, which are the hardened forewings of beetles, help distinguish it from other beetle species, as many have different textures or markings. Additionally, the 'C' shaped larva is a distinctive characteristic that aids in the identification process. This shape is not only unique but also differentiates it from the larvae of other beetles, such as the Merchant Grain Beetle, which typically exhibit different larval forms.

The other options do not accurately describe the distinguishing features. For example, the Merchant Grain Beetle's beak and pale spots are physical characteristics that could help in identification but do not pertain to the Cigarette Beetle. Furthermore, the Cigarette Beetle’s appearance is typically more of a reddish-brown and does not exhibit a shiny black color, which is important in understanding its identification context. Hence, the recognition of these specific traits of the Cigarette Beetle is crucial for an accurate identification compared to the Merchant Grain Beetle.