Freshwater Macroinvertebrates in Hong Kong

Hydrophilus sp.

Family: Hydrophilidae
Subfamily: Hydrophilinae
Tribe: Hydrophilini

General appearance: body cylindrical; head subcircular & presence of U-shaped frontal lines; mandibles asymmetrical; clypeolabrum (nasale) almost straight without distinct tooth; thoracic dorsal plates partly sclerotized; legs developed & long bearing numerous swimming hairs; abdomen segments with a pair of lateral projections (synapomorphical feature of Hydrophilini) and presence of membranous prostyli.

Fullview in dorsal view
Fullview in ventral view
Head in dorsal view
Head in ventral view
Abdomen in dorso posterior view
Abdomen in ventral view

 

Reference:

Minoshima, Yûsuke & Hayashi, Masakazu. (2011): Larval morphology of the Japanese species of the tribes Acidocerini, Hydrobiusini and Hydrophilini (Coleoptera: Hydrophilidae). Acta Entomologica Musei Nationalis Pragae 51(supplementum): 1–118.


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