Insect

Insect

Insect Body Parts ab - abdomen  an - antenna  cpe – compound

eye cr – circus  epm – epimeron  eps – episternum  hd – head  la – labium  md – mandible  msn – mesonotum  mst – mesothorax 

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 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 - 2nd major body part - 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

  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 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- ½ heathery ½

membranes

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.

Abdomen