Definition
Contacyphon cooperi is a species of marsh beetle belonging to the family Scirtidae.
Overview
Contacyphon cooperi is known from North America, with records primarily in the United States and southern Canada. Like other members of Scirtidae, the species is associated with moist or aquatic habitats; its larvae develop in shallow, stagnant or slow‑moving waters such as ponds, marshes, and the edges of streams. Adults are typically found on vegetation near water bodies and are active during the warmer months.
Etymology / Origin
- Genus name: The etymology of Contacyphon is not definitively documented in the primary taxonomic literature. The name appears to be constructed from Greek elements, but accurate information is not confirmed.
- Specific epithet: The epithet cooperi is a patronym, likely honoring an individual with the surname Cooper who was associated with the species’ discovery or collection. Precise identification of this person is not confirmed.
Characteristics
- Morphology: Adults are small beetles, generally measuring 4–6 mm in length. The body is elongate and somewhat flattened, with a coloration ranging from brown to dark brown. The elytra (wing covers) are finely punctate and lack distinct markings.
- Larval stage: Larvae are aquatic, possessing filamentous gills and a soft, elongated body adapted for life in water. They feed on detritus, algae, and microbial films.
- Life cycle: The species undergoes complete metamorphosis (egg → larva → pupa → adult). Development is synchronized with seasonal water conditions; adults emerge in late spring to early summer.
- Ecology: As a detritivore in its larval stage, C. cooperi contributes to the breakdown of organic material in freshwater ecosystems. Adults are occasionally collected in light traps, indicating nocturnal activity.
Related Topics
- Scirtidae – the family of marsh beetles, encompassing numerous genera adapted to aquatic or semi‑aquatic environments.
- Aquatic insects – broader group of insects whose life cycles are tied to freshwater habitats.
- Marsh ecosystems – wetland habitats that support diverse invertebrate communities, including Scirtidae.
- Taxonomic references – works such as the Catalogue of Palaearctic Coleoptera and regional faunal surveys that list Contacyphon cooperi among North American Scirtidae.
Note: While the general biological attributes of Contacyphon cooperi align with those typical of the genus and family, detailed species‑specific studies are limited, and certain aspects of its morphology and ecology may require further verification.