UNIT 2 Flashcards
Types of Insect Antennae
Threadlike segments
Filiform
Types of Insect Antennae
Bead-like segments
Moniliform
Types of Insect Antennae
Bristle-like, segments taper distantly
Setaceous
Types of Insect Antennae
Saw-like
Serrate
Types of Insect Antennae
Leaf-like
Lamellate
Types of Insect Antennae
Clubbed segments, gradually increase in diameter distally
Clavate
Types of Insect Antennae
Comb-like
Pectinate
Types of Insect Antennae
Having a head, terminal segments are usually enlarged
Capitate
Types of Insect Antennae
Elbowed, the first segment is long, following segments are small and form an angle.
Geniculate
Types of Insect Antennae
The last segment enlarged and
bears a conspicuous dorsal bristle
Aristate
Types of Insect Antennae
Feathery, most segments with
whorls of long hair
Plumose
Types of Insect Antennae
The last segment with an
elongated terminal
Stylate
Types of Insect Mouthparts
The mandibles cut off and grind solid food, the maxillae and labium push it into the esophagus.
Mandibulate
Types of Insect Mouthparts
The mandibles are produced in sharp blades, and the maxillae into long probing style.
Cutting-Sponging Type
Types of Insect Mouthparts
The mandibles and maxillae are non-functional and the remaining parts form a proboscis with a sponge-like apex called LABELLA.
Sponging Type
Types of Insect Mouthparts
The mandibles and labrum are chewing type and are used to grasping prey, molding wax or nest material.
Chewing-lapping Type
Types of Insect Mouthparts
The mouthparts of this group are modified to pierce tissuesand suck juices from them.
Piercing Sucking Type
Types of Insect Mouthparts
The food either nectar or liquid food already are sucked up by means of long proboscis composed only of a united galea of each maxillae.
Siphoning Type
Types of Insect Mouthparts
Has a cone-shaped beak formed from clypeus labrum, parts of maxillae and labium.
Rasping-Sucking Type
is the outer layer of insects and bends inwards at various points to form supporting ridges or braces.
INTEGUMENT
The 3 layers of the Body Wall
- Epidermis
- Cuticle
- Basement Membrane
Cellular layer of the body wall; secretes molting fluid involved in the growth process.
EPIDERMAL CELL
Non-cellular layer of the body wall.
Covers the entire body surface and also lines the insects’ air tube lining, salivary glands and parts of digestive tracts.
CUTICLE
3 Layers of the Cuticle
- Epicuticle
- Exocuticle
- Endocuticle
Separates the body wall with the internal organ.
BASEMENT MEMBRANE
Comprises the globular to capsule like anterior body segment of an insect which bears the eyes, antennae and mouthparts.
HEAD
Regions of the Insect Head
The anterior part of the head.
FRONS
Regions of the Insect Head
The anterior area below the dorsum of the head, between and behind the eyes.
VERTEX
Regions of the Insect Head
The area below the compound eye, on the side of the head.
GENA
Regions of the Insect Head
The lip-like sclerite.
CLYPEUS
Classification of Insect Head
Conditon wherein the mouthparts are at the right angle to the body axis.
HYPOGNATHOUS HEAD
Classification of Insect Head
Condition wherein the mouthparts are projecting backwards between the legs.
OPISTHOGNATHOUS HEAD
Classification of Insect Head
Mouthparts line in the body axis. Usually found in carnivorous or forms that burrow in wood or soil. Classification of Insect Head
PROGNATHOUS HEAD
Insect Mouthparts
Tooth-like structure used for chewing, grinding, teaaring or pincing-off solid food. Heavily sclerotized, paired and unsegmented
MANDIBLES
Insect Mouthparts
Helps in putting the food into the mouth. paired segmented structure used for mastication and lie directly behind the mandibles.
MAXILLAE
Insect Mouthparts
‘Upper lip’ found posterior to the maxillae.
LABRUM
Insect Mouthparts
‘Lower lip’ found posterior to the maxillae.
LABIUM
Insect Mouthparts
Central tongue-like that drops from the membranous floor of the head, and bears the opening of salivary duct.
HYPOPHARYNX
