What is the pronotum in a cockroach?

The pronotum is a prominent plate-like structure that covers all or part of the thorax of some insects. The pronotum covers the dorsal surface of the thorax.

1. What does the word pronotum mean?
2. Is prothorax and pronotum same?
3. What is the function of the prothorax?
4. Is a pronotum the thorax?
5. What is the pronotum made of?
6. What is cerci in insect?
7. What is tegmina in cockroach?
8. Do all insects have chewing mouthparts?
9. What are insect legs made of?
10. What is mesothorax in cockroach?
11. Which structure would never be found on an insect prothorax?
12. Is spider an insect?
13. What is inside an insect thorax?
14. What is the meaning of mesothorax?
15. What is Epiproct and Paraproct?
16. What are the cerci in cockroaches?
17. Do all flies have halteres?

What does the word pronotum mean?

Definition of pronotum

: the dorsal plate of an insect's prothorax.

Is prothorax and pronotum same?

The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum (dorsal), the prosternum (ventral), and the propleuron (lateral) on each side.

What is the function of the prothorax?

The prothorax bears the first pair of legs and a pair of respiratory openings (spiracles). The much larger mesothorax bears the second pair of legs, a second pair of spiracles, and the pair of forewings.

Is a pronotum the thorax?

The pronotum is the section of an insect body directly behind the head. The pronotum is a section of the thorax that lies in front of the sections that bear the legs and wings. In beetles the pronotum usually forms part of the hard casing, together with the elytra.

What is the pronotum made of?

noun, plural pro·no·ta [proh-noh-tuh]. the dorsal sclerite of the prothorax of an insect.

What is cerci in insect?

Cerci (singular Cercus) are paired appendages on the abdomen of many species of insect. Cerci perform a sensory function. The size of cerci varies between species with some having barely discernible cerci while others, like earwigs, having stout and obvious cerci (sometimes called pincers).

What is tegmina in cockroach?

A tegmen (plural: tegmina) designates the modified leathery front wing on an insect particularly in the orders Dermaptera (earwigs), Orthoptera (grasshoppers, crickets and similar families), Mantodea (praying mantis), Phasmatodea (stick and leaf insects) and Blattodea (cockroaches).

Do all insects have chewing mouthparts?

The most basic mouthparts, from which all other types have evolved, are for chewing. Predators such as the lady beetle have chewing mouthparts, but the mandibles have evolved into long, pointed appendages they can also use to grasp prey. Chewing mouthparts allow the insect to bite or rasp off and swallow solid food.

What are insect legs made of?

All insect legs contain the same basic parts: coxa, trochanter, femur, tibia, and tarsus, the latter of which is armed with one or two claws. The color of each leg part is the same throughout all the anatomy figures.

What is mesothorax in cockroach?

The mesothorax is the middle of the three segments in the thorax of an insect, and bears the second pair of legs. Its principal sclerites (exoskeletal plates) are the mesonotum (dorsal), the mesosternum (ventral), and the mesopleuron (lateral) on each side. ... All adult insects possess legs on the mesothorax.

Which structure would never be found on an insect prothorax?

Explanation: The prothorax never bears wings in extant insects (except in some cases of atavism), though some fossil groups possessed wing-like projections. ... Similarly, in the Tetrigidae, the pronotum is extended backward to cover the flight wings, supplanting the function of the tegmina.

Is spider an insect?

Anyway, spiders belong to the Class Arachnida, insects to the Class Insecta. ... Spider: 2 body parts, 8 simple eyes, no antennae, no wings, 4 pairs of legs, abdomen unsegmented. Insect: 3 body parts, 2 compound eyes, 2 antennae, 4 wings (or 2 or none), 3 pairs legs, abdomen segmented.

What is inside an insect thorax?

The thorax is the midsection (tagma) of the insect body. It holds the head, legs, wings and abdomen. ... It is formed by the prothorax, mesothorax and metathorax and comprises the scutellum; the cervix, a membrane that separates the head from the thorax; and the pleuron, a lateral sclerite of the thorax.

What is the meaning of mesothorax?

Definition of mesothorax

: the middle of the three segments of the thorax of an insect — see insect illustration.

What is Epiproct and Paraproct?

In all insects the 11th segment is reduced. In the grasshopper, the 11th segment is reduced to a tergal plate called the epiproct, and 2 lateroventral plates called paraprocts. It can also be united with the 10th segment (as in some Homoptera) to form an anal tube.

What are the cerci in cockroaches?

The abdomen of the cockroach houses the reproductive system. ... On the end of the abdomen, there are a pair of cerci, projections which are sensory organs. Cerci function in a similar manner to antennae, sensing vibrations through air or ground.

Do all flies have halteres?

All fly species have shortened hindwings called halteres. These don't generate useful lift, but are used as sensory organs for balance to help stabilise the insect while in flight. A group of flies known as Calyptratae, which includes houseflies and blowflies, rhythmically move these wings when standing.