The ventral view of a water penny (Psephenus sp.). Order: Coleoptera, Family: Psephenidae Water penn
The ventral view of a water penny (Psephenus sp.). Order: Coleoptera, Family: Psephenidae Water pennies occur in fast currents on rocks and stones. The thin flat plates of their body assume the shape of the surface they are on, making them very adept clingers. They scrape algae off of rocks with uniquely shaped mouth parts. -- source link
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