How many Sclerites does an insect head have?

six segments
Insect head is a Anterior most part of insect body it is hard and highly sclerotized compact structure which consisting of six segments that are fused to form a head capsule. The insect head consists of mouthparts, compound eyes, simple eyes (ocelli) and a single pair of antennae.

What are the insect head positions?

In the insects, the head is the tagma in the cephalic or anterior position. Structures related to two vital functions are situated in this tagma: feeding (mouthparts) and sensory function (organs like the antennae and visual organs: two compound eyes in the lateral position and three ocelli).

What is the function of head in insects?

The insect body is divided into three parts: the head, thorax, and abdomen. The head is specialized for sensory input and food intake; the thorax, which is the anchor point for the legs and wings (if present), is specialized for locomotion; and the abdomen for digestion, respiration, excretion, and reproduction.

What is the head of an insect called?

The head can be divided into general regions (see General Insect Head Regions and Mouthparts, left): the top of the head is the vertex, the side or cheeks are gena, the front of the face is the frons, and below the frons is the clypeus. These regions may be highly modified or lost in some groups of insects.

Which insect has Hypognathous head?

Hypognathous : (Hypo-below and gnathous – jaw) The head remains vertical and is at the right angle to the long axis of the body and mouthparts are ventrally located and projected downwards. This is also known as Orthopteroid type. Eg. Grasshopper and cockroach.

What is Hypognathous head?

1 : having the lower jaw longer than the upper. 2 : having the mouthparts ventrally directed —used especially of certain insects with biting mouthparts directed downward and often somewhat backward — compare prognathous.

What are the 3 parts of insect?

The basic model of an adult insect is simple: It has a body divided into three parts (head, thorax and abdomen), three pairs of legs and two pairs of wings. Insects have adopted different shapes, colours and all kinds of adaptations, but their body is almost always composed of these common elements.

What are the 3 parts of a insect?

Do insects have brains?

Understanding Insect Brains Insects have tiny brains inside their heads. They also have little brains known as “ganglia” spread out across their bodies. The insects can see, smell, and sense things quicker than us. Their brains help them feed and sense danger faster, which makes them incredibly hard to kill sometimes.

What kind of head is grasshopper?

The head of the grasshopper is a hard capsule that contains large muscles, which operate the chewing mouthparts, and the brain and subesophageal ganglion, which serve as the main centers of the nervous system.

Where are sclerites located on the head of an insect?

Just behind the occipital suture lie the occiput and postgenae, tiny sclerites that are probably remnants of the fifth primitive segment that fused to form the insect’s head.

How is the head of an insect formed?

Embryological evidence suggests that the first six body segments (three pre-oral and three post-oral) of a primitive worm-like ancestor may have fused to form the head capsule of most present-day insects. The surface of the head is divided into regions (sclerites) by a pattern of shallow grooves (sutures).

Which is the real suture of the insect head?

Post occipital: It is the only real suture in insect head. Posterior end of the head is marked by this suture to which the sclerites are attached. As this suture separates the head from the neck, hence named as real suture. 6.

How are the sclerites of the head divided?

The surface of the head is divided into regions (sclerites) by a pattern of shallow grooves (sutures). The uppermost sclerite (dorsal surface) of the head capsule is known as the vertex. A coronal suture usually runs along the midline of the vertex and splits into two frontal sutures as it extends downward across the front of the head capsule.