Dendroides

Dendroides is a genus of beetles belonging to the family Pyrochroidae, commonly known as cardinal beetles or fire-colored beetles. These insects are characterized by their elongated, flattened bodies and vibrant coloration, often featuring shades of red, orange, and black. The genus name "Dendroides" itself is derived from Greek, meaning "tree-like," which likely refers to their arboreal habits or perhaps their elongated antennae.

Adult dendroides beetles are typically found on or near decaying wood, where their larvae develop. The larvae are predatory and feed on other insect larvae, particularly those found within wood or under bark. This predatory role makes them ecologically significant in controlling populations of wood-boring insects. Adult beetles, while sometimes observed feeding on pollen or nectar, are not considered significant agricultural pests.

The life cycle of Dendroides beetles involves complete metamorphosis, with egg, larval, pupal, and adult stages. The larval stage can be prolonged, lasting for several years in some species, depending on environmental conditions and food availability. The bright coloration of adult dendroides beetles is often thought to serve as a warning signal to potential predators, indicating that the beetle is distasteful or toxic. Several species within the genus are recognized, with geographic distribution varying across different regions.