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The development of insect mouthparts from the primitive chewing mouthparts of a grasshopper in the centre (A), to the lapping type (B) of a bee, the siphoning type (C) of a butterfly and the sucking type (D) of a female mosquito. Legend: a, antennae; c, compound eye; lb, labium; lr, labrum; md, mandibles; mx, maxillae; hp hypopharynx.
The mosquito larva's head has prominent mouth brushes used for feeding, a large thorax with no legs, and a segmented abdomen. It breathes air through a siphon on its abdomen, so must come to the surface frequently. It spends most of its time feeding on algae, bacteria, and other microbes in the water's surface layer. It dives below the surface ...
The salivary glands (element 30 in numbered diagram) in an insect's mouth produce saliva. The salivary ducts lead from the glands to the reservoirs and then forward through the head to an opening called the salivarium, located behind the hypopharynx. By moving its mouthparts (element 32 in numbered diagram) the insect can mix its food with saliva.
This section provides an overview of the individual mouthparts of chewing insects. The diversification of insects' food sources led to the evolution of their mouthparts. This process was facilitated by natural selection. [1] Figure 1: Chewing mouthparts of a grasshopper. Legend: lr, labrum; md, mandibles; mx, maxillae; hp hypopharynx; lb, labium.
Rather than being tooth-like, the mandibles of such insects are lengthened into stylets, which form the outer two parts of the feeding tube, or beak. The mandibles are therefore instrumental in piercing the plant or animal tissues upon which these insects feed, and in helping draw up fluids to the insect's mouth.
The mosquito-like bugs are much larger than normal mosquitoes and don't bite. What exactly are these insects? Ask the Expert: Big mosquito-like bugs are in the area recently.
Modifications of the labrum (in red) in assorted insects. (A) grasshopper, (B) honey bee, (C) butterfly (D) mosquito. Bembix rostrata female using its labrum in sucking the blood out of a fly. The labrum is a flap-like structure that lies immediately in front of the mouth in almost all extant Euarthropoda.
Fleabite and mosquito bite symptoms. Both fleabites and mosquito bites cause itching, but there are ways to tell them apart based on symptoms.. Fleabites. A fleabite can look like other insect ...