All About Arthropods!

Virginia Sanchez - Period 4 - PAP Biology - Guzman

Let's Jump Into Information!

The scientific name for crayfish is Orconectes propinquus. The color of each individual crayfish varies depending on species, diet, and age. Lifespan also varies between species, but is usually about 2-3 years. Crayfish grow by molting. The omnivorous diet of a crayfish consists of fish, shrimp, meat, and vegetables. Crayfish are also nocturnal. Predators of crayfish are alligators, burbots, turtles, otters, and birds.

The scientific name for grasshoppers is Caelifera. Grasshoppers are generally brown, yellow, or green. The average lifespan is about a year. Grasshoppers are usually 38-50mm long. They live in fields and meadows around the world. Their herbivorous diet includes weeds, shrubs, and grass. Birds, rodents, reptiles, and insects are predators of the grasshopper.


Taxonomy: Crayfish

Kingdom: Animalia

Phylum: Arthropoda

Class: Malacostraca

Order: Decapoda

Taxonomy: Grasshopper

Kingdom: Animalia

Phylum: Arthropoda

Class: Insecta

Order: Orthoptera


Our objective is to learn about the internal and external anatomy about arthropods, focusing on crayfish and grasshoppers. The main focus on the crayfish and grasshopper is the respiratory system.

The Respiratory System

The respiratory system of the crayfish is like no other. Crayfish have their gills on the outside of their body and are attached to their legs. Crayfish use their gills to breathe underwater. In the respiratory system of the grasshopper, they use tracheal breathing. The tracheae open to the outside through small holes called spiracles. The tracheae are air filled tubes that help insects like grasshoppers breathe.

Key Features

The main characteristics of arthropods include bilateral symmetry, a segmented body, an exoskeleton, jointed appendages, and numerous pairs of limbs.

Great Grasshopper Dissection!

Grasshopper Dissection