What is insect Gena?

gena. (Anatomical feature) the area below the compound eyes, the insect equivalent to human cheeks.

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 type of head orientation is grasshopper?

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 head capsule in insect?

In most insects, the head capsule is a sturdy compartment that houses the brain, a mouth opening, mouthparts used for ingestion of food, and major sense organs (including antennae, compound eyes, and ocelli).

What are the 3 parts of an insects body?

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 is the function of the head of an insect?

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.

Why is the head in cockroach called Hypognathous?

The mouthparts of the cockroach are directed downwards. The head is small, triangular lies at a right angle to the longitudinal body axis. Hence it is called hypognathous.

What are the five components of the insect head?

The insect head consists of mouthparts, compound eyes, simple eyes (ocelli) and a single pair of antennae. The head segments can be divided in to two regions i.e. procephalon and gnathocephalon (mouth).

What are the types of insect head?

TYPES OF INSECT HEADS.

Does a fly have 3 body parts?

The body is made up of three main parts: the head, the thorax (to which are attached the wings and legs) and the abdomen.

What’s an insect’s body called?

The three main insect body parts are head, thorax, and abdomen. The head contains the antennae, eyes, and mouthparts. The thorax is the middle body part to which the legs and wings are attached. The abdomen contains digestive and reproductive organs internally and often reproductive structures externally.

What are the 3 parts of a insect?

Where is the ecdysial suture located on the head?

The ecdysial suture (coronal suture+frontal suture, epicranial suture, ecdysial line, cleavage line) is variably developed among insects. The suture is longitudinal on the vertex and separates epicranial halves of the head (Fig. 3B ).

Where is the suture on a pterygote head?

(B) Larval pterygote head showing epicranial and frontal sutures (Lepidoptera: Noctuidae). The vertex (Latin, vertex = top; pl., vertices) is the apex or dorsal region of the head between the compound eyes for insects with a hypognathous or opisthognathous head.

Where is the suture of the frons located?

The frons varies in size, and its borders are sometimes difficult to establish. In most insects the frons is limited ventrally by the frontoclypeal suture (epistomal suture), a transverse suture located below the antennal sockets. As its name implies, the suture separates the dorsal frons from the ventral clypeus ( Fig. 3A ).

What is the suture of a Musca domestica?

FRONTAL SUTURE – In the adult of Musca domestica, the triangular suture margining the frons and invaginated into the ptilinum. FRONTOCLYPEUS – A facial area combining the frons and the clypeus in the absence of an epistomal suture.