<p><b>Fleas</b><br>Fleas are wingless insects. They are bilaterally compressed and covered with stiff hairs directed backwardly. Strong legs help fleas to jump. They are of the Order siphonaptera which all display complete metamorphosis.</p><p><u>Morphology</u><br>An Adult flea is 2-3mm in size. Body is divided into head, thorax and abdomen. Head is round or angular and carries 2 simple eyes (may be absent). Ocular hairs are located in front or below the eyes. Post cephalic hairs may be present. Two short 3-segmented antennae lie in the grooves behind the eyes. proboscis is used for piercing and sucking. Thorax consists of 3 segments and carries 3 pairs of strong legs. 10 segmented abdomen carries a sensory plate (pygidium or sensilium)…



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