Transcript Insect - Modesto Junior College

Insect
Insect Body Parts
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ab - abdomen
an - antenna
cpe – compound
eye
cr – circus
epm – epimeron
eps – episternum
hd – head
la – labium
md – mandible
msn – mesonotum
mst – mesothorax
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mtn – metanotum
mtt – metathorax
oc – ocellus
ov – ovipositor
prn – pronotum
prt – prothorax
ps – pleural suture
sp – spiracles
st – sternum
tg 1-10 – terga
th – thorax
Head
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The head is the
hardened
(sclerotized)
anterior region of
the body that bears
the eyes, antennae,
and mouthparts
Mouth parts
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Maxillae and mandibles are called Stylets
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Labium- houses the feed channel and
salivary tubes
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Stylets- Pierce the tissues and contain
section tubes
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Labrum- Acts like a scabbard
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Proboscis (tongue) uncoils by an
increase in blood pressure.
Mouthparts
chewing and piercing-sucking
(opened)
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an – antenna
cl – clypteus
cpe – compound eye
fr – frons
la – labium
lap – labial palpus
lb – labrum
md – mandible
mx – maxilla
mxp – maxillary palpus
oc – ocellus
Types of Antennae
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A – setaceous
B – filiform
C – moniliform
D – elbowed
E – clavate
F – capitate
G – lamellate
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H – ringed
I – aristate
J – serrate
K – pectinate
L – bipectinate
M – plumose
Types of Antennae
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Setaceous
Filiform
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- Thread like
-Uniform segs.
- Grasshopper
-Beetles
Moniliform
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-Bead-Like
-Globular or
Rounded
-Usually Uniform
- Common in
Beetles &
Termites
Elbowed
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Wasps, Ants, Bees,
Beetles
Capitate
Capitate
Lamellate
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-Leaf like,
laminated
-Beatles
-June
-Carrion
-Scarab
Ringed
Aristate
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Flies
Serrate
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- Saw like
- Uniform segs.
- Coleoptera only
Pectinate
- Comb. like
- Certain moths and
beetles
Bipectinate
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Second set
Plumose
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- Feather- like
- Flies and Moths
Salivary Juices
1. Softens cell wall
 2. Anesthetizes
 3. May Pre-digest
 4. Anti Coagulants
 5. Spread diseases
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Thorax
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- 2nd major body part
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- 3 segments (sometimes
4) If a 4th segment is present it
is called an alitrunk. Actually
seems to be the 1st Abdominal,
but it’s the narrow waist in
bees, ants, and wasps
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a) Prothorax- Bears 1st
pair legs
b) Mesothorax- Bears 2nd
pair legs and 1st pair wings
c) Metathorax- Bears 3rd
pair legs and 2nd pair of wings
B and C = Ptera Thorax
General Wing
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A – anal vein
aa – anal angle
am – anterior or
costal margin
ap – apex
C – costa
cc – closed cell
Cu – cubitus
cu-a – cubito-anal
crossvein
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h – humeral
crossvein
M – media
oc – open cell
pm – posterior
margin
R – radius
r-m – radio-medial
crossvein
Rs – radial sector
Sc – subcosta
Wings
Ptera- Winged
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2 full sets of wings
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Dipterous- 1 pair
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Apterous- no wings
 All immature insects are apterous
 Wing veination for I.D.
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Wing Form
- Elytra- Tough hard wing
 - Hemelytra- ½ heathery ½
membranes
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Tegminous
Forewing leathery
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Orthortera
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Membranous- clear delicate nerve
like
General Insect Leg
cx – coax
 fm – femur
 pt – pretarsus (claws)
 tb – tibia
 tr – trochanter
 ts – tarsus
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Leg Shapes and specialization
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1. Cursorial- wacking
Legs are basically all the same size and shape
2.Saltatorial
Saltar- To Jump
3.Raptorial
Rrapten- Claw like
Predators
4. Fessorial
Digging Legs
Parts of the leg
Leg Shapes and specialization
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5.Natatorial
Pre-Natal
Swimming
Flat or Paddle like
-Thorax Houses Powerful locomotors muscles
for
-Leg
-Wings
Contains part of the digestive tract,
circulatory system and respiratory system.
Abdomen