Beetle

Beetles are insects that form the order Coleoptera (), in the superorder Holometabola. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described arthropods and 25% of all known animal species; new species are discovered frequently, with estimates suggesting that there are between 0.

Helophorus est un genre d'insectes coléoptères de la famille des Hydrophilidae. C'est le seul genre de la sous-famille des Helophorinae.

Helophorus aquaticus es una especie de escarabajo del género Helophorus, familia Hydrophilidae. ​ Fue descrita científicamente por Linnaeus en 1758. ​ Habita en Austria, Baleares, Bélgica, Córcega, paleártico oriental, Estonia, Turquía, Finlandia, Francia continental, Alemania, Hungría, Italia, Letonia, Lituania, Oriente Próximo, Polonia, Portugal continental, Cerdeña, Sicilia, España peninsular, Suiza y Países Bajos.