Description Nacerdes melanura
English: A Wharf Borer
Date May 2009
Author Alvesgaspar https://commons.wikimedia.org/wiki/User:Alvesgaspar
Source: https://commons.wikimedia.org/wiki/File:Beetle_May_2009-5.jpg

The wharf borer, Narcerdes melanura, belongs to the insect order Coleoptera, or the beetles. They belong to the family Oedemeridae, which are commonly known as false blister beetles. Wharf borers are present in all the states of the USA except for Florida. It takes about a year to develop from an egg to an adult. The insect is called the 'wharf borer' because the larval stage of this insect is often found on pilings and timbers of wharves, especially along coastal areas. The adult beetles can be identified via a black band across the end of both elytra, or wing covers. In addition, wharf borers can be distinguished from other members of the Oedemeridae family via the presence of a single spur on the tibia of the forelegs, and the distance between both eyes (twice the length of one eye). Eggs are oviposited on rotten wood where larvae hatch and burrow to feed on rotten wood. Adults do not feed and depend on stored energy reserves accumulated during the larval stage. They are considered to be a pest because they damage wood used in building infrastructures. Order: Coleoptera, Family: Oedemeridae, Species: Narcerdes melanura.