Serratella setigera (Bajkova)(범꼬리하루살이)

범꼬리하루살이_수생태183_2009_10_07_0016_PaxEco.jpgCanon | Canon EOS 450D | aperture priority (semi-auto) | spot | Manual W/B | 0.167 s (1/6) (1/6) | F/0.0 | 1.00 (1/1) | 0.00(0/1) | ISO-400 | Flash-No | 2009:10:07 04:48:46