. . . . . . . . . "Unavailable"@en . . "Abundance of Hygrobates nigromaculatus (ITIS: 83309) per unit area of the bed by sieving and picking under an optical microscope"@en . "ZBN00738" . . "accepted"@en . "SDN:P01::ZBN00738" . . . . . . . . . . . .