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Typically the mandibles are the largest and most robust mouthparts of a chewing insect, and it uses them to masticate (cut, tear, crush, chew) food items. Two sets of muscles move the mandibles in the coronal plane of the mouth: abductor muscles move insects' mandibles apart ( laterally ); adductor muscles bring them together ( medially ).
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.
The mouthparts of orthopteran insects are often used as a basic example of mandibulate (chewing) mouthparts, and the mandibles themselves are likewise generalized in structure. They are large and hardened, shaped like pinchers, with cutting surfaces on the distal portion and chewing or grinding surfaces basally .
The development of insect mouthparts from the primitive chewing mouthparts of a grasshopper in the center (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
The development of insect mouthparts from the primitive chewing mouthparts of a grasshopper in the center (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
The mouthparts of Arthropoda such as insects; typically labrum, mandible, maxilla, labium. trophus The singular form of trophi (rarely used). uncate hook-like, as in the mouthparts of many fly larvae. (also uncinate) uncinate hook-like, as in the mouthparts of many fly larvae. (also uncate) unguis (plural ungues) the claws at the tip of most ...
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Pages in category "Insect anatomy" The following 122 pages are in this category, out of 122 total. ... Insect mouthparts; Insect scale; J. Johnston's organ; Juxta; K.