Title: THE INSECT HEAD AND ITS APPENDAGES
1THE INSECT HEADANDITS APPENDAGES
2http//www.cals.ncsu.edu/course/ent425/tutorial/in
dex.html
An good web site for insect anatomy
3Head Capsule
Neck
Mouthparts
4Some general terms
Sulcus - a groove - line of strength
Suture - where two sclerites meet - line of
weakness
5Head Segmentation
6Insect Heads
3 basic types
Prognathous
?
?
Hypognathous
Opisthorhynchous
7Insect Head
Occiput
Compound Eyes
Ocelli
Frons
Gena
Clypeus
Mandible
Labrum
1st Maxilla
Labium (2nd Maxilla)
8Insect Mouthparts
Labrum
Mandible
Hypopharynx
1st Maxilla
Labium (2nd maxilla)
9Insect Mouthparts
Labrum
-upper lip
- contains chemosensory sensilla
10Insect Mouthparts
Molar surface
Mandible
Incisor surface
11Insect Mouthparts
Mandible
- in a grasshopper -a dicondylic joint
-emphasize strength over mobility
12Insect Mouthparts
1st Maxilla
Cardo
Stipes
Palp
Lacinia
Galea
13Insect Mouthparts
Labium (2nd Maxilla)
Submentum
Mentum
Prementum
Glossa
Palp
Paraglossa
can be fused to form a Ligula
14Comparison of 1st and 2nd Maxillae
Cardo
Stipes
Submentum
Mentum
Palp
Lacinia
Prementum
Glossa
Palp
Paraglossa
Galea
15Hypopharynx
Labium
Salivarium
Hypopharynx
Cibarium
Cibarium
16(No Transcript)
17Modifications of Mouthparts
-Piercing and Sucking
Front
Mandibles
Maxillae
Channel for food
Back
Channel for saliva
18Modifications of Mouthparts
Sponging
e.g. housefly
19Modifications of Mouthparts
Siphoning
e.g. butterfly
20Modifications of Mouthparts
Stabbing
e.g. Mosquito
21Modifications of Mouthparts
Cutting and Sponging
Labrum
Mandibles
Hypopharynx
Labellum
Maxillae
e. g. deerflies
22Modifications of Mouthparts
23Head Capsule
Neck
Mouthparts
24Tentorium - internal support for the head capsule
Posterior arms
Anterior arms
Dorsal arms
Cut away view of the head capsule
25Insect Antenna
Antennal sclerite
Antennal socket
Pedicel
Flagellum
Antennal suture
Antennifer
Scape
26Insect Antennae
Monoliform
Aristate
Pectinate
Capitate
Plumose
Clavate
Serrate
Filiform
Geniculate
27Insect Antennae
Monoliform
Aristate
Capitate
Pectinate
Clavate
Plumose
Filiform
Serrate
Geniculate