How many tergum does a cockroach have?

Cockroaches also have a brown colored exoskeleton and segmented body. There are three segments into which the cockroach body is divided. These segments are the head, abdomen, and thorax. Each segment is further divided into four plates called terga, sterna, and two lateral pleura.

What is tergum and sternum in cockroach?

Tergum is the covering each segment of the cockroach on the dorsal side. Sternum: The sternum is the covering of each segment of the cockroach on the ventral side.

What is the location of tergum in cockroach?

Tergum is a chitinous plate located in the abdomen of a cockroach. The abdomen is elongated and made up of ten segments. Each segment has a dorsal tergum and ventral sternum. Tergum is jointed to the sternum laterally by a soft cuticle called pleura.

What is the function of tergum?

See diagram: tergite noun – a dorsal plate of the exoskeleton, especially of the abdomen. From Latin tergum, the back, plus ite, constituent. 1.

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).

Which type of development occurs in periplaneta?

paurometabolous development
It is a periodic phenomenon. The cockroach nymph undergoes ecdysis almost 13 times to metamorphose into an adult. This type of development is known as paurometabolous development. Therefore, the correct answer to this question is paurometabolous.

What is sternum in insect?

The sternum (pl. “sterna”) is the ventral portion of a segment of an arthropod thorax or abdomen. In insects, the sterna are usually single, large sclerites, and external.

What is Tergum sternum and pleura?

pleura, from Greek side, rib) is a lateral sclerite of thoracic segment of an insect between the tergum and the sternum. The terms pro-, meso- and metapleuron are used respectively for the pleura of the first, second and third thoracic segments.

What are Tergites and Sternites?

Tergite: It is a sclerite (plates that form exoskeleton) present on dorsal side of an abdominal segment in an arthropod. Sternite: It is a chitinous plate present on the dorsal side of an abdominal segment in an arthropod.

What is Sterna in cockroach?

The sternum (pl. “sterna”) is the ventral portion of a segment of an arthropod thorax or abdomen.

What is elytra and Hemelytra?

elytra /-trə/) is a modified, hardened forewing of beetles (Coleoptera), though a few of the true bugs (Hemiptera) such as the family Schizopteridae are extremely similar; in true bugs, the forewings are called hemelytra (sometimes alternatively spelled as “hemielytra”), and in most species only the basal half is …

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