ENTO 208 1st Edition Lecture 3 Outline of Lecture 2I. Phylum ArthropodaII. Arthropod Classesa. Crustaceab. Diplopodac. Chilopodad. Arachnidae. Insecta Outline of Lecture 3I. External Anatomya. Headb. Eyesc. Mouth partsd. Thoraxe. Legsf. Antennaeg. Abdomen Current LectureI. External anatomyi. Pay particular attention to the mouth partsii. Lab = identificationiii. Lecture = form and functioniv. List of structures to know for the exam (see end of document)a. Headi. Segments of head fused top form capsuleii. Rigid for protection and for strength in mouth partsiii. Antennae intake sensory information (odor, sometimes touch)b. Eyesi. Compound-separate units for separate images, brain compiles itii. Simple-have as well as compound, either 0, 1, 2, or 3iii. Photoperiodism: developmental response to relative lengths of light and dark periodsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.c. Mouth Partsi. Mandibulate – chewing ii. Haustellate – piercing/sucking, probing/sipping, sponging/lapping.d. Thoraxi. Segments labeled from left to right, along top, middle, then bottom1. Dorsal: Pronotum, mesonatum, metanotum2. Mid: propleuron, mesopleuron, metapleuron3. Ventral: prosternum, mesosternum, metasternumii. all insects have legs on metapleuron and/or metasternume. Legsi. Segmented: coxa, trochanter, femur, tibia, tarsus (see diagrams at the bottom)ii. Wings: only on mature insects, usually 2 pairs, sometimes top wing is hardened to protect membranous wing underneath- Some have lost their wings secondarily (through evolution)- Important in identification (see images at the bottom)f. Antennae (images at bottom match corresponding to numbers here)1. Setaceous – bristle-like (dragonflies)2. Filiform – thread-like (Ground beetles & cockroaches)3. Moniiliform – bead-like (termites)4. Serrate – sawtoothed (click beetles)5. Clavate – gradually clubbed (butterflies)6. Lamellate – nested plates (scarab beetles)7. Lamellate – nested plates (scarab beetles)8. Pectinate – comb-like (Fire-colored beetles and male glow worms)9. Plumose – brush-like (mosquitoes)10. Genticulate – elbowed (weevils and ants)11. Aristate – pouch-like with lateral bristle (house flies)g. Abdomen (male vs. female diagram at bottom of page)i. 10-11 segmentsii. Cerci are used in mating/oviposition (sensory)External Anatomy – Terms list- Head (Sensory) - Antennae - Compound eye- Ocelli- Mouthparts- Labrum - Mandible - Hypopharynx - Maxilla - Labium - Thorax (Locomotion) - Prothorax- Pronotum - Mesothorax - Metathorax - Leg - Coxa - Trochanter - Femur- Tibia- Tarsus - Claw - Abdomen (Digestive and reproductive) - Tympanum - Spiracles - Reproductive organ- Claspers -
View Full Document
Unlocking...