Post on 12-Jan-2017
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.
THANK YOU