Lab-5c---Myriapods-&-Hexapods-多足亚门和六足亚门.pptx

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1、MyriapodandInsectsClass:ChilopodaCentipede100“legger”1pairofappendagespersegmentActive/NocturnalpredatorMaxillipedsbearingpoisonfangClass:DiplopodaMillipede1000“legger”2pairofappendagespersegmentHerbivoresDiplosegment-doubletrunksegmentsSubphylumMyriapodaThemostspeciosegroupofanimals1.1

2、millionspeciesworldwideManyscientistbelieveover1millionspecieshaveyettobeidentified3tagmataHead:FourmainpairofappendagesAntennaeMandiblesMaxillaeLabium-BilobedlowerlipClass:InsectaKeytoInsectOrdersp.242ThoraxThreesegmentseachbearingapairoflegsProthorax-legsMesothorax-LegsandLeatheryfore

3、wingsMetathorax-LegsandMembranoushindwingsAbdomenAmountofsegmentsvarybetweenspeciesofinsectsWhyareinsectssoimportanttoecosystems?Cont…ThetwochoicekeyTwoquestionspercharacteristicThefirstquestionifcorrectsendsyoutoanothernumberThesecondquestionifcorrectidentifiestheOrder,Family,Genus,and

4、SpeciesCangetverycomplicatedandveryspecific!DichotomousKeysMakesureyouknowhowtousetheKeytoInsectOrdersp.242