摘 要: | 1.具外翅芽(图l);具复眼(图2)…(若虫和稚虫)…12 无外翅芽;无复眼(图3)·········……(幼虫期)…22·虫体无足(图4)··············.····.................……3 虫休具足(图为·················.··................……63,有头(或缺乏色素)·································……4 无明晰的头(图4);通常具一对大的后气孔(图4)… 双翅目D二ptora4.体直而长(图6)或末端具呼吸管(图7)·········…… 双翅目Diptora 不如上述····、·······…
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