Entomology

Tell me about an Insect's Antenna?

1 pair on head They are jointed They are sensory (smell) called "feelers" filiform is the most common shape segments = size may be modified

Incomplete Metamorphosis

3 stages: egg, nymph, and adult gradual change Insects: dragonflies, roach, praying mantis Orders: Siphonaptera, Isoptera, Orthoptera, Hemiptera,Homoptera nymph stage called Naiads

Complete Metamorphosis

4 stages: egg, larva, pupa, adult a drastic change Orders: Coleoptera, Hymenoptera, diptera, Lepidoptera butterflies/ wasp/ mother/ bees pupal stage is chrysalis

How many legs must an Insect have and where are they attached?

6 legs attached to the thorax

What is chitin?

A type of protein that gives strength and structure.

What is this?

Abdomen?

What is a Proboscis?

An elongated sucking mouthpart that is typically tubular and flexible.

What are some more Hemipterans

Assassin Bugs, Water Boatmans, Giant Water Bugs, Leaf Hoppers.

What is the difference between a bug and an insect

Every bug is an insect, but not all insects are bugs.

What is this?

HEAD

What type of arthropods are Insects?

Insects are the largest group of Arthropods. They have jointed (bendable) appendages, segmented bodies, exoskeleton of Chitin (Type of protein that gives strength and structure) that must be molted to grow, and are related to spiders, ticks, scorpions, millipedes, and crustaceans.

What is the taxonomy of insects?

Kingdom: Animalia Phylum: Arthropoda Class: Insecta

Dermaptera (Earwings)

Long flat bodies with forceps (pincers) at the end of abdomen. They have short hard forewings and membranous hindwings folded underneath. They have large jaws called mandibles on the head.

Do insects have wings?

Most adults have two pairs of wings called forewings and hindwings. Although some insects are wingless such as silverfish, fleas, and some termites and ants.

Hymenoptera (Bees, Ants, Wasps)

Narrow waist connects thorax and a curved downward abdomen. May have a stinger on the end of the abdomen.

What are some of the modifications that the order diptera (flies) have on their wings?

The second pair of wings are modified into Halteres. They are then used for balance and makes the flies hard to catch.

Describe the Insect Order Coleoptera?

They are called Beetles, and have tough exoskeletons. Their forewings are called Elytra and fly with their membranous hindwing. Their larvae are called grubs.

Describe the Order Ephemeroptera?

They are called Mayflies. Their juveniles are aquatic and called Naiads. Adults are found near water and don't eat because they reproduce and die in 24 hours. They have soft bodies with 2 long tail fibers called Ceri.

What type of wings do butterflies and moths have?

They are covered with powdery scales.

Siphonaptera (fleas)

They are ectoparasites with laterally compressed bodies. They have enlarged hind jumping legs and very short antenna.

What is a true bug?

They are in the order Hemiptera. Their posterior thorax is triangular and called the scutellum. The last third of the wing is clear.

How does most insect's wings look?

They are membraneous (clear) and have a network of veins that strengthen the wings.

Collembola (Springtails)

They are small and soft bodied and have Furcula (a jumping mechanism) on their abdomens. The Furcula folds under the body at rest. These are found in decaying plant material.

What is the difference between a Wheelbug and an Assassin bug

They are the same bug?

Plecoptera (Stoneflies)

They have aquatic nymphs, Aerial Adults are short lived and make a drumming sound to find mates.

What are the modifications on a Beetle's wings?

They have hard forewings called Elytra that meet in a straight line down the abdomen and they have membranous hindwings that are folded underneath for flight.

Orthoptera (Grasshoppers, Crickets, Katydids, Locusts)

They have very long bodies, and hind legs modified for jumping. The females have an egg laying tube called an ovipositor at the end of their abdomen.

Describe the Order Diptera?

This order contains mosquitoes and flies. They have 1 pair of functional wings and club-shaped halteres for balance. Their bodies are often hairy.

What is this?

Thorax

What are the wingless insect orders?

Thysanura, Siphonaptera, Collembola, Anoplura, Mallophaga

What are the different antenna modifications?

aristate, lamellate, serrate, flabellate, moniliform, geniculate, plumose, pectinate, setaceous, stylate, and clavate

What is Metamorphosis?

change of form

Odonata (Dragonflies & damselflies)

dragonflies hold clear wings spread perpendicular to body at rest and damselflies hold clear wings together over abdomen.

Mallophaga (Biting lice)

external parasites on birds and mammals. They have broad heads and flattened bodies and feed on dead skin, feathers, and fur.

Thysanura (silverfish)

found around houses or under stones and wood. Fast runner that damage books. They are secretive and active at night. They have flat, long bodies and long antennae, they have three long tail like appendages.

Are insects vertebrates or invertebrates?

invertebrates

Mecoptera (Scorpionflies)

last abdominal segments curved like scorpion and have two pairs of narrow wings. The head is elongated into a beak (rostrum) and has long antenna.

both metamorphosis

lay eggs and has adult forms

Isoptera (Termites)

live in colonies and feed on wood. They have soft bodies and short antenna. They have castes consisting of workers, soldiers, kings, and a queen.

Homoptera (cicadas, leafhoppers, wing aphids)

membranous wings held over body like a roof. They have piercing-sucking mouthparts

Anoplura (Sucking lice)

parasites of mammals that are very small. They are head and body lice and are attracted to children's fine hair and usually carry disease.

Thysanoptera (Thrips)

they are very small, have two pairs of fringed wings and feed on plant sap.

Neuroptera (lacewings, antlions)

they have net-vieled wings, long antenna and are small and delicate. They prey on other insects and may feed on nectar.

Lepidoptera (Moths, Butterflies, Skippers)

they have siphoning mouthparts coiled under their heads and have powdery scales on wings. Butterflies fold wings flat above body at rest. Moths are active at night. They are important plant pollinators because of their feeding habits.

What are the main characteristics of insects?

three body regions: head, thorax, and abdomen One pair of Antenna (head) 6 legs or 3 pairs (thorax) 1-2 pairs of wings (thorax)

What are Amorphic Insects?

wingless insects that don't go through metamorphosis.