6-469: The Bostrichidae are a family of beetles with more than 700 described species. They are commonly called auger beetles , false powderpost beetles , or horned powderpost beetles . The head of most auger beetles cannot be seen from above, as it is downwardly directed and hidden by the thorax. Exceptions are the powderpost beetles (subfamily Lyctinae), and members of the subfamily Psoinae . Bostrychoplites cornutus has large, distinctive thoracic horns, and
12-576: Is found in parts of Africa and Arabia; it is often imported to Europe as larvae in African wooden bowls ("ethnic souvenirs") . The fossil record of the family extends to the Cretaceous, with the oldest records being from the Cenomanian aged Charentese and Burmese ambers, belonging to the extant genus Stephanopachys and the extant subfamilies Dinoderinae and Polycaoninae. This list
18-402: Is incomplete: This Bostrichidae -related article is a stub . You can help Misplaced Pages by expanding it . Powderpost beetle Powderpost beetles are a group of seventy species of woodboring beetles classified in the insect subfamily Lyctinae . These beetles, along with spider beetles , death watch beetles , common furniture beetles , skin beetles , and others, make up
24-432: The starch content. Their presence is only apparent when they emerge as adults, leaving behind pinhole-sized openings, often called "shot holes". They may also leave piles of powdery frass below. Shot holes normally range in diameter from 1 ⁄ 32 inch (0.79 mm) to 1 ⁄ 8 inch (3.2 mm), depending on the species of beetle. If wood conditions are right, female beetles may lay their eggs and re-infest
30-424: The superfamily Bostrichoidea . While most woodborers have a large prothorax , powderpost beetles do not, making their heads more visible. In addition to this, their antennae have two-jointed clubs. They are considered pests and attack deciduous trees , over time reducing the wood to a powdery dust. The damage caused by longhorn beetles (family Cerambycidae) is often confused with that of powderpost beetles, but
36-643: The two groups are unrelated. The larvae of the Cerambycidae are white, straight and generally flat-headed, whereas those of the Bostrichidae are white and C-shaped. The term "powderpost" comes from the fact that the larvae of these beetles feed on wood and, given enough time, can reduce it to a mass of fine powder. Because of this behavior, they are considered pests. These beetles can survive in colder climates. Powderpost beetle larvae spend months or years inside wood while developing, feeding mainly on
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