Transcript Insect - Modesto Junior College
Insect
Insect Body Parts
ab - abdomen
mtn – metanotum
an - antenna mtt – metathorax cpe – compound oc – ocellus eye ov – ovipositor cr – circus prn – pronotum epm – epimeron prt – prothorax eps – episternum ps – pleural suture hd – head sp – spiracles la – labium st – sternum md – mandible tg 1-10 – terga msn – mesonotum th – thorax mst – mesothorax
Head
The head is the hardened (sclerotized) anterior region of the body that bears the eyes, antennae, and mouthparts
Mouth parts
Maxillae and mandibles are called Stylets
Labium- houses the feed channel and salivary tubes
Stylets- Pierce the tissues and contain section tubes
Labrum- Acts like a scabbard
Proboscis (tongue) uncoils by an increase in blood pressure.
Two General Types of Mouthparts chewing and piercing-sucking (opened)
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
A – setaceous B – filiform C – moniliform D – elbowed E – clavate F – capitate G – lamellate H – ringed I – aristate J – serrate K – pectinate L – bipectinate M – plumose
Types of Antennae
Setaceous
Filiform
- Thread like
-Uniform segs.
- Grasshopper
-Beetles
Moniliform
-Bead-Like
-Globular or Rounded
-Usually Uniform
- Common in Beetles & Termites
Elbowed
Wasps, Ants, Bees, Beetles
Capitate
Capitate
Lamellate
-Leaf like, laminated
-Beatles
-June
-Carrion
-Scarab
Ringed
Aristate
Flies
Serrate
- Saw like
- Uniform segs.
- Coleoptera only
Pectinate
- Comb. like - Certain moths and beetles
Bipectinate
Second set
Plumose
- Feather- like
- Flies and Moths
Salivary Juices
1. Softens cell wall
2. Anesthetizes
3. May Pre-digest
4. Anti Coagulants
5. Spread diseases
Thorax
2 nd major body part - 3 segments (sometimes 4) If a 4 th segment is present it is called an alitrunk. Actually seems to be the 1 st Abdominal, but it’s the narrow waist in bees, ants, and wasps
a) Prothorax- Bears 1 st pair legs b) Mesothorax- Bears 2 nd pair legs and 1 st pair wings c) Metathorax- Bears 3 rd pair legs and 2 nd pair of wings B and C = Ptera Thorax
General Wing
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 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
2 full sets of wings Dipterous- 1 pair Apterous- no wings
All immature insects are apterous
Wing veination for I.D.
Wing Form
- Elytra- Tough hard wing
- Hemelytra membranes ½ heathery ½
Tegminous
Forewing leathery
Orthortera
Membranous- clear delicate nerve like
General Insect Leg
cx – coax fm – femur pt – pretarsus (claws) tb – tibia tr – trochanter ts – tarsus
Leg Shapes and specialization
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
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.