Nigrobaetis bacillus (Kluge)(깜장하루살이)

깜장하루살이_수생태184_2009_10_06_0012_PaxEco.jpgCanon | Canon EOS 450D | aperture priority (semi-auto) | spot | Manual W/B | 0.125 s (1/8) (1/8) | F/0.0 | 1.33 (4/3) | 0.00(0/1) | ISO-400 | Flash-No | 2009:10:06 18:35:32