How To Study Living Animals

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4. KEY TO SOME COMMON ORTHOPTERA
A. Groups

Legs

Antennæ

Other Characters

Groups

Similar, fitted for running

Long

Body flattened, wings folded on dorsal surface of the abdomen

Cockroaches (Blattidæ)

First pair of legs enlarged for grasping

Rather long

Prothorax long and slender, wings folded on dorsal surface of abdomen

Mantis (Mantidæ)

Similar, fitted for walking

Long

Body usually greatly elongated and stick-like, usually no wings

Walking stick (Phasmidæ)

Hind legs fitted for jumping

Short

Body somewhat compressed, wings folded on side of abdomen

Short-horned grasshoppers (Acrididæ)

Long

Body compressed, wings folded on sides, tarsus four-jointed

Long-horned grasshoppers (Locustidæ)

Long

Body somewhat flattened, wings folded on the back, tarsus three-jointed

Crickets (Gryllidæ)

B herunterladen. Species or Genera

Characters of Species

Common Name

Groups

Large size, brown color

American cockroach

Cockroaches

Small size, pale brown

“Croton bug”

Dark color, often wingless

Oriental cockroach

Body long, anterior portion slender

Mantis or rear horse

Mantis

Long body, long legs, no wings

Walking stick

Walking sticks

Very large size, wings very small

Lubber grasshopper

Short-horned grasshoppers

Small to medium size, legs marked with red

Red-legged grasshopper

Large size, greenish brown color

Differential locust

Medium to large size, sand color (gray)

Carolina locusts

Rather large, green, wings large and angled

Angle-wing katydid

Long-horned grasshoppers

Small to rather large, usually green

Meadow grasshopper

Wingless, brown color

Cricket grasshopper

Usually rather large, black

Field cricket

Crickets

Wingless, front legs shovel-shaped

Mole cricket

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