Potamanthus (Potamanthodes) formosus (Eaton)(작은강하루살이)

작은강하루살이(청계3)2009_12_03_0014_PaxEco.jpgCanon | Canon EOS 450D | aperture priority (semi-auto) | spot | Auto W/B | 0.033 s (1/30) (1/30) | F/0.0 | 1.33 (4/3) | 0.00(0/1) | ISO-400 | Flash-No | 2009:12:03 16:47:39