UNIT 3 Flashcards
It is one of the three main body parts of an insect. It is the middle
segment, behind the head and before the abdomen.
Thorax
The anterior segment of the thorax bearing the first pair of legs is called
Prothorax
The posterior segment of the thorax bearing the third pair of legs, and second pair of wings is called
Metathorax
The middle segment of the thorax bearing the second pair of legs, and first pair of wings
Mesothorax
It is a boxlike structure with a dorsal tergum, a ventral sternum, and additional side regions called pleura.
Thoracic Metamere
Hard plates of the thorax are called
sclerites
The farthest part of the insect’s body typically in a claw or pair of claws.
Tarsus
The first segment (counting from the body) in the leg of an insect.This part attaches the legs to the thorax.
Coxa
It is any of the sverla bony knobs on the femur of vertebrates to which muscles are attached. The second segment of the leg, between the coxa and the femur.
Trochanter
The third segment of the leg, typically the longest and thickest segment.
Femur
The long and often narrow segment of the leg. This contains the muscles that control the tarsi.
Tibia
One of a number of small segments distal to the tibia. It is made up of 2-5 segments.
Tarsus
Types of Insect Legs
Also known as Running Legs. They are the type of legs found on swift-moving insects like roaches and tiger beetles.
Cursorial Legs
Types of Insect Legs
They are also called jumping legs, usually hind legs packed with pwoerful muscles used for jumping.
Saltatorial Legs
Types of Insect Legs
Also called hunting legs, they are the type of leg found on predatory insects such as mantids and giant water bugs.
Raptorial Legs
Types of Insect Legs
These legs are used for swimming. They’re usually found on water beetles. They are flat, broad, and fringed with dense hairs.
Natatorial Legs
Types of Insect Legs
These legs are usually forelegs used for burrowing or digging. They tend to be very broad, flat, and dense.
Fossorial Legs
Forewings of Coleoptera.
Elytra
Forewings of Hemiptera.
Hemelytra
Wings of Thysanoptera
Fringed wings
Wings of Tricoptera
Membranous Wings
Hindwings of Diptera
Halteres
Forewing of Grasshoppers
Tegmina
They serve primarily for protecting the hind wings and must be opened in order for the insect to fly.
Elytra
Hardened at the base, and membranous near the end. A triangular patch between the forewings is usually noticable.
Hemelytra
These wings are reduced in size, these are fringed with long setae and make insects swim through the air.
Fringed Wings
Thin, transparent wings supported by a system of tubular veins.
Membranous Wings
Highly sophisticated balance organs that oscillate during flight.
Halteres
Modified leathery forewing of an insect. Its major role is to protect the hindwings when folded.
Tegmina
The final and largest body region.
Abdomen
This refers to internal body parts.
Organs
This refers to external body parts
Structures
These are tiny openings that can be found on both sides of the abdomen, through which the insect obtains oxygen.
Spiracles
