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training module for medical officers primary health centre - NVBDCP

training module for medical officers primary health centre - NVBDCP

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Figure 3.1 Distinguishing features between anophelines from culicinesAnophelinesCulicinesEggs: Floatseparately; eachegg has a floatLarva: No siphonand rests paralleland immediatelybelow surfacePupa: Breathingtrumpet short andhas wide openingAdult: Rest at anangle between 50 oand 90 o to thesurfaceEgg: Clumptogether in a raft(Culex) or floatseparately (Aedes)Larva: Breathingtube (siphon), alsoused to hang downfrom surfacePupa: Breathingtrumpet long andslender with anarrow openingAdult: Rest moreor less parallel tothe surfaceFigure 2: Distinguishing Anopheles females from malesAntennae of Female mosquitoesHairs few in number and shortPalpiFemale culicine:Palpi much shorterthan proboscisMale culicine:Palpi longer thanproboscis, withtapered tipsPalpiFemale anopheline:Palpi as long asproboscisMale anopheline:Palpi as long asproboscis and clubshapedat tipAntennae of Male mosquitoesHairs very long, giving bushy appearance15

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