Hydrophilus triangularis

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Coleopterida
Ordo: Coleoptera
Subordo: Polyphaga
Infraordo: Staphyliniformia
Superfamilia: Hydrophiloidea

Familia: Hydrophilidae
Subfamilia: Hydrophilinae
Tribus: Hydrophilini
Subtribus: Hydrophilina
Genus: Hydrophilus
Species: Hydrophilus triangularis

Hydrophilus triangularis, known generally as the giant black water beetle or giant water scavenger, is a species of water scavenger beetle in the family Hydrophilidae.[1][2][3] It is the most common and widespread species of Hydrophilus in North America, being found across the contiguous United States, southern Canada, and Mexico.[4][5]
References

"Hydrophilus triangularis Report". Integrated Taxonomic Information System. Retrieved 2019-09-23.
"Hydrophilus triangularis". GBIF. Retrieved 2019-09-23.
"Hydrophilus triangularis species Information". BugGuide.net. Retrieved 2019-09-23.
Short, A. E. Z.; McIntosh, C. E. (2014). "Review of the giant water scavenger beetle genus Hydrophilus Geoffroy (Coleoptera: Hydrophilidae) of the United States and Canada". The Coleopterists Bulletin. 68 (2): 187–198. doi:10.1649/0010-065X-68.2.187.
Arce-Pérez, Roberto; Morón, Miguel Ángel (2013). "El género Hydrophilus (Coleoptera: Hydrophilidae: Hydrophilina) en México y Centroamérica". Revista Mexicana de Biodiversidad (in Spanish). 84: 140–152. doi:10.7550/rmb.32113.

This beetle is among the largest aquatic insects. Adults can reach up to 5–5.15 cm (1.97–2.03 in) in length and 2.05 cm (0.81 in) in width.[3][2] The larvae is up to 7 cm (2.8 in) long. The body of adults is black with a greenish or olive sheen. It has protruding eyes and reddish-black antennae.[2]
Biology