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Animal Lab Exam
Lab 6
14
Biology
Undergraduate 2
04/03/2012

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Term
Classification of Grasshopper
Definition
Phylum Arthropoda
Subphylum Hexapoda
Class Insecta
Order Orthoptera
Genus Romalea (italic)
Term
Body has three distinct regions (tagmata)
Definition
1. head - eyes, ocelli, antennae and mouth parts
2. thorax - three pairs of legs, two pairs of wings
3. abdomen - pair of cerci and ovipositor (male genitalia)
Term
Each segment of insect made up of 3 parts
Definition
1. tergum - hard dorsal sclerite
2. sternum - hard ventral sclerite
3. pleuron - membranous
Term
Ocelli
Definition
contain transparent cuticle that acts as a lens
Term
Antennae
Definition
made up of:
1. scape: contains muscles to move antenna
2. pedicel: organ sensitive to movement of antenna
3. flagellum: non-musculated
Term
Mouthparts of grasshopper
Definition
1. Labrum: upper lip, underside is called the epipharynx
2. Mandibles: jaws, toothed
3. Maxillae: second pair of jaws under mandibles
4. Hypopharynx: tongue-like structure
5. Labium: lower lip, labial palps on either side
Term
Thorax
Definition
second tagma divided into three segments:
1. prothorax: bears forelegs
2. mesothorax: middle portion, bears middle legs and forewings
3. metathorax: bears hind legs and hind wings
Term
5 segments of the leg
Definition
1. coxa
2. trochanter
3. femur
4. tibia
5. tarsus
Term
Cerci
Definition
posterior, found on abdomen
sensory in function
Term
Female vs. Male
Definition
posterior end of female is pointed and consists of two pairs of plates with a smaller pair in between forming ovipositor, in between in oviduct

abdomen of male is rounded
Term
To what subphylum and order does the grasshopper belong?
Definition
Subphylum Hexopoda
Order Orthoptera
Term
What 3 segments bear legs?
Definition
prothorax
mesothorax
metathorax
Term
Name the excretory structures in grasshoppers
Definition
Malpighian tubules
Term
Name the internal respiratory structures
Definition
trachial tubes
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