Lab practical #1 - Orthoptera Order

Question 1

Answer 1

Tetrigidae - “Pygmy Grasshopper”

1. Pronotum extending over abdomen

Question 2

Answer 2

Acrididae - “Grasshoppers”

1. Tympanum present on abdomen
2. Oedipodinae (subfamily) - brightly colored hindwings that stridulate in flight (producing a crackling sound)
   
   1. Epigamic display
3. Rocky Mountain locust [Melanoplus spretus] - specimens collected in 1870’s
   
   1. Now extinct

Question 3

Answer 3

Romaleidae

1. Large
2. Short wings

Question 4

Answer 4

Tridactylidae - “Pygmy mole crickets”

1. Related to grasshoppers, not crickets, digging front legs

Question 5

Answer 5

Tettigoniidae - “Long-horned grasshoppers and Katydids”

1. Tarsi (4-segmented)
2. Ovipositor sword-shaped

Question 6

Answer 6

Rhaphidophoridae - “Camel crickets”

Question 7

Answer 7

Gryllidae - “Common Cricket”

1. Tarsi (3-segmented)
2. Ovipositor needle shaped

Question 8

Answer 8

Gryllotalpidae - “Mole Crickets”

1. Fossorial (digging) fore legs