TAMU ENTO 208 - General External Anatomy (5 pages)

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General External Anatomy



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General External Anatomy

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general anatomy of arthropods with diagrams


Lecture number:
3
Pages:
5
Type:
Lecture Note
School:
Texas A&M University
Course:
Ento 208 - Veterinary Entomology
Edition:
1

Unformatted text preview:

ENTO 208 1st Edition Lecture 3 Outline of Lecture 2 I Phylum Arthropoda II Arthropod Classes a Crustacea b Diplopoda c Chilopoda d Arachnida e Insecta Outline of Lecture 3 I External Anatomy a Head b Eyes c Mouth parts d Thorax e Legs f Antennae g Abdomen Current Lecture I External anatomy i Pay particular attention to the mouth parts ii Lab identification iii Lecture form and function iv List of structures to know for the exam see end of document a Head i Segments of head fused top form capsule ii Rigid for protection and for strength in mouth parts iii Antennae intake sensory information odor sometimes touch b Eyes i Compound separate units for separate images brain compiles it ii Simple have as well as compound either 0 1 2 or 3 iii Photoperiodism developmental response to relative lengths of light and dark periods These 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 Parts i Mandibulate chewing ii Haustellate piercing sucking probing sipping sponging lapping d Thorax i Segments labeled from left to right along top middle then bottom 1 Dorsal Pronotum mesonatum metanotum 2 Mid propleuron mesopleuron metapleuron 3 Ventral prosternum mesosternum metasternum ii all insects have legs on metapleuron and or metasternum e Legs i 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



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