LennyWorthington:
Hydaticus luczonicus (Aubé,1838) male 15 mm
LennyWorthington:
Cybister tripunctatus (Olivier,1795) Three-punctured Diving Beetle
LennyWorthington:
Eretes griseus (Fabricius,1781) Predacious Diving Beetle Dysticidae
LennyWorthington:
Sandracottus maculatus (Wehncke, 1876) Predatious Diving Beetle Dytiscidae