Copelatus coxalis is a species of aquatic beetle belonging to the family Dytiscidae, commonly known as predaceous diving beetles. It is a small predatory insect found in freshwater habitats primarily in Southeast Asia.
Taxonomy
Copelatus coxalis is classified within the order Coleoptera (beetles), family Dytiscidae (predaceous diving beetles), and genus Copelatus. The genus Copelatus is one of the largest genera within the Dytiscidae family, encompassing numerous species found across tropical and subtropical regions worldwide.- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Insecta
- Order: Coleoptera
- Family: Dytiscidae
- Genus: Copelatus
- Species: Copelatus coxalis
Description
Like other members of the genus Copelatus, C. coxalis is a relatively small, oval-shaped, and somewhat flattened beetle adapted for an aquatic lifestyle. Adults typically have smooth, often dark brown to black, glossy exoskeletons. Distinguishing features among Copelatus species often involve subtle differences in body proportions, surface sculpture, punctuation, and the structure of the male genitalia. While specific detailed descriptions for C. coxalis are often found in specialist entomological literature, the species' epithet "coxalis" likely refers to a characteristic related to the [[coxa]] (the basal segment of the leg, closest to the body), which may be a key diagnostic feature for the species.Distribution and Habitat
Copelatus coxalis is primarily distributed in various regions of Southeast Asia. Its known range includes parts of Indonesia (such as Sumatra, Java, and Borneo) and Malaysia. It inhabits stagnant or slow-moving freshwater bodies, including ponds, swamps, marshes, and the margins of streams and rivers, often found amidst aquatic vegetation.Ecology and Behavior
As a member of the Dytiscidae family, Copelatus coxalis is a predatory insect throughout its life cycle. Both the larvae and adults are carnivores, feeding on smaller aquatic invertebrates such as insect larvae, worms, and small crustaceans. Adults are capable swimmers, using their flattened, fringed hind legs to propel themselves through water. They must periodically surface to replenish their air supply, which they store under their [[elytra]] (hardened forewings). Like many diving beetles, they play a role in the aquatic food web, both as predators and as prey for larger aquatic animals.See Also
- [[Dytiscidae]]
- [[Aquatic beetle]]
- [[Coleoptera]]