COURSE: INSECT MORPHOLOGYTOPIC: CHEWING AND LAPPING TYPE, SIPHONING TYPE, MASK TYPE AND DEGENERATED MOUTH PARTS

Submitted To:Dr. C. Narendra

Reddy ProfessorDept. of Entomology

Submitted by:K.PrashanthRAM/2015-30

INTRODCTION Chewing and lapping type mouthparts

Siphoning type mouthparts Mask type mouthparts Degenerate type mouthparts

CHEWING AND LAPPING TYPE OF MOUTH PARTS

The labrum and mandibles are biting type. The maxillae, labium and hypopharynx combine together

to form a sucking proboscis. The mandibles are dumbell shape. The maxillary palpi are very small or reduced. Labial palpi are conspicuous and 4 segmented. Glossae is provided with long hairs and a small spoon

shaped lobe called flabellum or bouton. Glossae is very active while food is being imbibed

retracting and protruding from the base of mentum. Eg: Honey bees.

SIPHONING TYPE MOUTHPARTS These are specially modified for taking nectar from

the flowers. The galea of maxilla form into a slender tubular

structure which remains as an elongated coiled proboscis underneath head during non feeding.

Mandibles are totally absent Labrum and maxilla palpi reduced. Labium modified into small basal plate possessing a

three segmented labial palpi.

SIPHONING TYPE MOUTHPARTS

MASK TYPE MOUTH PARTS: Mainly useful for catching the prey. Labium is modified into a mask where the

prementum and post mentum forms into an elongated structure with a joint.

Labial palpi are represented as teeth like structure help full for catching the prey.

During the resting period when the insect is not feeding, the mouth parts cover a part of the head. Hence it is called as mask type.

Eg: Naids of dragonflies.

DEGENERATE TYPE OF MOUTH PARTS

In apodous maggots a definite head is absent. The mouth parts are highly reduced represented by a

mouth hooks or spines. Eg : Maggots of Diptera.

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