HYDROPHILIDAE
Hydrophilus sp.
 |
a |  |
a | |
| the underside of the beetle is finely pubescent and water-repellent to store air in the pubescence | the thin layer of air makes the venter appear silvery due to the total reflection of light |
Hydrophilus sp.
|
a | |
a | |
| the underside of the beetle is finely pubescent and water-repellent to store air in the pubescence | the thin layer of air makes the venter appear silvery due to the total reflection of light |