Insects Flashcards
Which phylum do insects belong to?
Phylum Arthropoda
What Phylum, Class, and Order does the spider belong to?
Phylum Arthropoda
Class Arachnida
Order Araneae
Mites are six-legged arthropods. [T/F]
False. Mites are arthropods that possess eight legs. Therefore, they are eight-legged.
What are the two classes of arthropods that are considered economically important?
Class Insecta and Class Acari
The following are the distinguishing characteristics of arthropods, except:
a) A nervous system
b) An open circulatory system with hemolymph
c) A hard exoskeleton made of glucans
d) Appendages on at least one segment
C.
Arthropods are characterized by their hard exoskeleton made of chitin.
In which subclass of the Class Arachnida do the mites belong to?
Subclass Acari
The study of mites and ticks.
Acarology
It is the scientific study of insects, including all the phases of their lives and understanding their role in nature.
Entomology
The term “Entomology” is derived from the word _____ which means ‘insect’, and ______ which means ‘study of’.
Entomon; Logio
1) Insects have three body parts (head, cephalothorax, and abdomen)
2) Insects have 6 pairs of legs.
a) Only statement 1 is false
b) Only statement 2 is false
c) Both statements are false
d) Both statements are not false
c) Both statements are false.
Insects have three body pairs (head, thorax, and abdomen.
Insects have 6 legs / 3 pairs of legs.
The number of visible segments of the abdomen of an insect.
5 - 11 visible segments
1) Not all adult insects have wings
2) Not all adult insects have a pair of antennae
a) Only statement 1 is true
b) Only statement 2 is true
c) Both statements are true
d) Both statements are not true
a) Only statement 1 is true.
All adult insects have a pair of antennae.
The reproductive appendages are located at what area of the abdomen?
a) Middle
b) Top
c) Tip
d) Under
c) Tip.
The reproductive appendages of an insect are located at the tip of the abdomen.
This provides the insect with protection, muscle attachment, framework, and leverage for locomotion.
Exoskeleton
The exoskeletons are made up of ________.
Chitin
This is the process of hardening of the insect’s cuticle.
Sclerotization
This body part of the insect bears the eyes, antennae, and mouthparts.
Insect Head
1) The compound eyes are located dorsolaterally on the head.
2) The compound eye is made up of an array of visual units called ommatidia.
a) Only statement 1 is true.
b) Only statement 2 is true.
c) Both statements are true.
d) Both statements are false.
Both statements are true
In an insect, only the compound eyes are capable of detecting motion and UV light. [T/F]
False.
Ocelli are simple eyes that can detect motion and light (including UV light) but does not transmit images.
The ocelli are capable of transmitting images, not just detection of light and motion. [T/F]
False. The ocelli do not transmit images, as they only detect motion and light through their photoreceptors.
Sensory organ of an insect that is responsible for the sense of touch, smell, and hearing.
Antennae
The three basic parts of the antennae.
Scape, Pedicel, and Flagellum.
The basal segment of the antennae that articulates with the head capsule.
Scape
The second segment of the antennae.
Pedicel
All of the remaining “segments” of the antennae.
Flagellum
The singular term for flagellum.
Flagellomeres
The type of antennae in which it is long, thin, and made of equally sized and shaped segments.
Filiform
The type of antennae in which it is pouch-like with one lateral bristle.
Aristate
A type of antennae that is beaded, with round segments that make the antenna look like a string of beads. It is exhibited in beetles.
Moniliform
A type of antennae that is gradually clubbed, where segments become wider toward the tip of the antennae. It is exhibited in butterflies, moths, and beetles.
Clavate
In this type of antennae, the segments towards the end are flattened and plate-like, which gives them the appearance of a fan.
Lamellate
The type of antennae that is comb-like. The segments are longer on one side, which gives it the appearance of a comb. This type of antennae is found in sawflies and beetles.
Pectinate.
This type of antennae is similar to the filiform antennae, but it terminal segments are pointed and slender, which gives it the appearance of a style. It is found in Brachycerous flies.
Stylate
The type of antennae is characterized by their segments that each have a number of fine thread-like branches. The long hairs of this antennae gives it the appearance of a feather. It is found in flies, and also in mosquitoes.
Plumose
This antennae is similar to pectinate and lamellate, but the segments are thinner and flattener. This is found in beetles, wasps, and moths.
Flabellate
The saw-toothed antennae. The segments of this type of antennae are angled on one side, giving it the appearance of a saw edge.
Serrate
In this type of antennae, there is an abrupt bend or elbow part of the way along the antenna. This type of antennae is found in ants.
Geniculate
Type of antennae where it is bristle-shaped and are thinner and longer in their ends. Found in mayflies, dragonflies, and damselflies.
Setaceous
Beetle: Coleoptera
Flies: _____________
Diptera
Sawflies: Hymenoptera
Moths: ___________
Lepidoptera
Damselflies: __________
Mayflies: Ephemeroptera
Damselflies: Odonata
The two basic types of mouthparts of insects.
Mandibulate and Haustellate
the Mandibulate mouthparts are also known as the ________ type.
Chewing
Which of the following is NOT a part of the Mandibulate mouthparts?
a) Labrum
b) Mandible
c) Hypopharynx
d) Stylet
d) Stylet
The five parts of the mandibulate mouthparts are: Labrum, Mandible, Maxillae, Labium, and Hypopharynx.
In the mandibulate type, the mandibles are found behind the _______.
Labrum.
Heavily sclerotized and unsegmented jaws.
Mandible
The labium covers the upper part of the mouthpart. [T/F]
False.
The labium covers the lower part of the mouthpart.
It is the broad, flaplike lobe found below the clypeus on the head’s anterior side. It also closes the front of the mouthparts.
Labrum.
Labrum: Upper Lip
Hypopharynx: Tongue-like
Labium: __________-
Labium: Lower Lip
The part of the mouth that bear a feller like organ called the palp. It is located behind the mandibles.
Maxillae
The part of the mandibulate mouthpart that aids in swallowing.
Hypopharynx
It is the type of mouthparts where it has no mandibles and does not chew their food.
Haustellate / sucking type
The haustellate mouthpart has an elongated proboscis or beak that allows liquid food to be sucked. [T/F]
True
The primary function of the mandibulate mouthparts is to pierce or scrape on tissues. [T/F]
FALSE
The haustellate mouthpart can pierce or scrape on tissues.
What are the five variations of haustellate types?
- Piercing-sucking
- Sponging type
- Siphoning type
- Rasping-sucking
- Chewing-lapping
The haustellate type of thrips is the sponging type, where they have a proboscis but are short and stout. [T/F]
False.
Rasping-sucking is the haustellate type that has a short and stout proboscis.
The haustellate type of houseflies. It is adapted for sucking up liquid or semiliquid food.
Sponging type
The haustellate type for extracting nectar from flowers using an elongated proboscis or tongue, which are the fused maxillae.
Siphoning type
This haustellate type have mandibles that are used for defense, carrying things, molding wax, and building nests. It also has elongated maxillae and labium.
Chewing-lapping
Haustellate type that have stylets that are needle-like.
Piercing-sucking
This is the body part of an insect where the appendages for locomotion are located.
Thorax
What are the 3 segments of the thorax?
Prothorax, Mesothorax, and Metathorax.
Which of the following is not a segment of the thorax?
a) Prothorax
b) Pterothorax
c) Mesothorax
d) Metathorax
b) Pterothorax
What is the term used when the mesothorax and metathorax are combined?
Pterothorax
Which of the following is not one of the leg’s basic parts?
1) Coxa
2) Trochanter
3) Femur
4) Tibia
5) Tarsus
6) Chela
7) Pretarsus
Chela.
The leg’s basic parts are coxa, trochanter, femur, tibia, tarsus, pretarsus.
Insects are the only arthropods that can fly. [T/F]
True
Give at least 3 types of insect legs.
Types of legs
- Running or Cursorial
- Digging or Fossorial
- Grasping or Raptorial
- Catching
- Pollen Collection
- Jumping or saltatorial
- Clinging
The other term for digging legs.
Fossorial
The other term for jumping legs.
Saltatorial
The other term for grasping.
Raptorial
What kind of legs does the mole cricket have?
Digging or Fossorial
What kind of legs does the cockroach have?
Running or Cursorial
What kind of legs does the mantis have?
Raptorial / Grasping
What kind of legs do honeybees have?
Pollen Collection
What kind of legs does the head louse have?
Clinging
At which segment of the thorax are the wings of the insect located?
Second and third thoracic segment / Mesothorax and Metathorax
It is the term used for the joining together of two pairs of wings.
Wing coupling
It is the type of wing characterized by hard, sclerotized front wings that serve as protective covers for membranous hind wings. This is found in beetles.
Elytra
Type of wings characterized by front wings that are leathery or parchment-like at the base, and membranous near the tip. This is found in hemipterans.
Hemelytra
This type of wings is characterized by front wings that are completely leathery or parchment-like in texture.
Tegmina
Type of wings that have small, club-like hind wings that serve as gyroscopic stabilizers during flight.
Halteres
Scaly wings are front and hind wings covered with flattened setae (scales). It is found in insects used Order ____________.
Order Lepidoptera
Type of wings with front and hind wings clothed with setae.
Hairy wings
Type of wings that have slender front and hind wings with long fringes of hair.
Fringed wings
This is the type of wing coupling with tiny hooks on the hind wings, which engaged the forewing on the sclerotized fold along the posterior margin. This is found in Hymenopterans and Trichopterans.
Amplexiform
Type of wing coupling with an enlarged lobe-like area near the basal posterior margin. The coastal margin of the front wing possesses a small lobe at its base called fibula, which rests on the surface of the hind wings.
Jugal wing coupling
What are the 3 types of wing coupling?
- Amplexiform wing coupling
- Frenulo-retinacular wing coupling
- Jugal wing coupling
The abdomen has 10 - 11 segments, but primitively has 2 segments. [T/F]
True
The 8th and 9th segments of the abdomen are composed of the insect’s genitalia. [T/F]
True
The term for the development of eggs after it has been laid.
Oviparity development
It is when the egg develops inside the body of the female and comes out as a live young.
Viviparity / Viviparous
Two or more embryos develop from a single egg.
Polyembryony
An asexual reproduction where the egg can grow without being fertilized.
Parthenogenetic / Parthenogenesis
It is the change in structure and form of insects as they develop.
Metamorphosis
The term used when there are no external changes between molts of the insects.
Ametabolous
Insects that are ______ undergo incomplete changes. The stages include the egg, naiad, and adult.
Hemimetabolous
___________ insects have aquatic immatures, while the adults are terrestrial.
Hemimetabolous
Give an example of a hemimetabolous insect.
Dragonfly, Mayfly, Damselfly, Stonefly
The immatures / nymphs of the ________ insects are strikingly similar to the adults. Example: Grasshopper.
Paurometabolous
It is called the complete metamorphosis.
Holometabolous
_______________ is called the complete metamorphosis due to the presence of the four distinct stages: the egg, larva, pupa, and adult.
Holometabolous
True bugs: Paurometabolous
Bees: _______________
Butterfly: ______________
Flies: ______________
Holometabolous
Holometabolous
Holometabolous
Insects are the dominant terrestrial animal life on Earth. [T/F]
True
What are the reasons why insects are dominant and successful?
- Structure (Exoskeleton and efficient nervous system)
- Flight (Evolution of flight)
- Small size
- High reproductive rate / fecundity
- Adaptability that is genetic, rather than behavioral.
The evolution of flight gives the insect increased opportunity for survival and dispersal to new habitats. [T/F]
True
The adaptability of insects are behavioral, rather than genetic. [T/F]
FALSE
The adaptability of insects is genetic, rather than behavioral.
Insects are dominant because of their massive numbers and ability to inhabit to virtually all terrestrial habitats, including places with extremely low temperatures. [T/F]
False. Insects do not inhabit the Arctic, Antarctic, and peaks of very high mountains.
Insects feed on all types of organic matter. [T/F]
True. There are insects that are:
- Phytophagous
- Predaceous
- Parasitic
- Saprophagous
Enumerate the role of insects.
Insects as:
- Herbivores
- Decomposers
- Predators and Parasitoids
- Parasite
- Prey
- Pollinators
About 99% of all insects are non-pest. [T/F]
True
Which of the following is not a reason why insects become pests?
- Changes in cropping patterns eliminates and introduces plants.
- Specimens of scientific studies
- Displacement of organisms in one area to another because of utilization of land for planting
- Change in human values and preferences.
- Specimens of scientific studies.
Destructive pests deal direct damage to crops by being vectors of pathogens. [T/F]
False.
Indirect damage - vectors of pathogens
Insects injure cultivated crops indirectly by oviposition and feeding. [T/F]
False.
Direct damage - oviposition and feeding
Enumerate the types of feeding damage caused by insects.
- Chewing type
- Boring type
- Sucking type
Boring type of feeding damage is where the insects inflict defoliation and feed on the fruits, stems, and roots. [T/F]
False.
Chewing type of feeding damage is where the insects inflict defoliation and feed on the fruits, stems, and roots.
Boring type is where insects damage crops by making holes / tunnels.
What type of feeding damage is made by caterpillars, beetles, grasshoppers, and leafminers?
Chewing type
The following are insects that damage the crops by sucking up liquid or sap, except:
a) Aphids
b) Mealybugs
c) Leafhoppers
d) Leaf miners
D. Leaf Miners
Leaf miners are defoliators.
The following insects deal damage to crops by making holes or tunnels, except:
A. Termites
B. Tomato Fruit worm
C. Caterpillars
D. Eggplant fruit and shoot borer
E. Asian Corn Borer
F. None of the above
C. Caterpillars
Caterpillars are defoliators.
What is the type of feeding damage when the signs are the following:
- yellowing
- wilting
- holes with frass/feces
Boring type
What is the type of feeding damage dealt by insects when the plant experiences stunted growth, fewer leaves, drying, and death?
Sucking type
Hemipterans excrete honeydew which favors growth of sooty mold that alter photosynthesis. [T/F]
False.
HOMOPTERANS excrete honeydew, which favors growth of sooty mold that alter photosynthesis.
Sucking type insects are have toxins in their saliva which can harm the plant, and are also capable of transmitting pathogens. [T/F]
True
It is defined as grouping together of individual objects by some system of relationship or association among them.
Classification
The science, theory, and practice of classifying organisms.
Taxonomy
This deals with how organisms are related to each other and attempt to describe the underlying reason or that relationship.
Systematics
A tool that is used to unlock the door to the identification of an unknown organism.
Key
Knowing the name of the insect pest is needed to formulate pest control recommendations. [T/F]
True
The name of an organism allows one to obtain information about the organism’s life cycle, habits, natural enemies, reproduction, and even the control strategies of the insect. [T/F]
True
A fundamental unit of classification.
Species
It is considered as the smallest grouping scale of reproduction and the production of fertile offspring.
Species
What are the two groups of taxonomy?
Lumpers and Splitters
Taxonomy that puts together all related insects in one order.
Lumpers
Taxonomy that splits / separates orders into other specific orders.
Splitters
The Order Phthiraptera (Lice) belongs to what group of taxonomy?
Lumpers
The mantis was considered to belong under the Order Orthoptera but was then split into its own separate order. [T/F]
True
Apterygpota: __________
Pterygota: Presence of wings
Lack of wings
Exopterygota: ____________
Endopterygota: Internal winged forms
Exopterygota: External winged forms
Order under Apterygota that includes insects that are known for their swift movement, distinct feelers and cerci, and may cause extensive damage to household goods such as book bindings, cardboard and, other paper products.
Example: Silverfish
Order Zygentoma
Insects that belong to this order are winged with short lifespan. Their naiads are ecological indicators of good water quality. They also act as an important food source for fishes and other aquatic wildlife.
Example: Mayflies
Order Ephemeroptera
Insects that belong this order are characterized by their very big compound eyes. They are general feeders and predators of small insects such as mosquitoes. However, they are considered as pests by beekeepers.
Example: Dragonflies and Damselflies.
Order Odonata
The largest known insect is the fossil _________ Meganeura monyi which had a wingspan of approximately 30cm.
dragonfly
Insects that belong to this order are capable of camouflage / crypsis because they resemble leaves, grasses, and twigs. They have long, slender antennae and have mandibulate mouthparts. Their wings are often reduced or absent. Some species are defoliators of forest trees and cause economic losses.
Example: Walking stick, Leaf insects.
Order Phasmatodea
The order where grasshoppers and locusts belong.
Order Orthoptera
Insects under this order have cursorial and gressorial (walking) legs. They are commonly known for residing in human dwellings throughout the world, despite having 99% of them living in the wild. They are nocturnal. They forage food and water and contaminate it with their smelly excreta. They are useful as research tools (insect physiology and toxicology).
Example: Cockroaches and Termites
Order Blattodea
Dead cockroaches and their feces are important sources of household ________ that become air-borne and provoke respiratory allergies in sensitive people.
Dander
This insect is generally considered as a highly beneficial insect. However, they are cannibalistic and may also feed on other beneficial insect. It is the only insect that can turn its head from side to side without moving the rest of its body. Its head is triangular and have well-developed compound eyes. It possesses raptorial forelegs, adapted for catching prey.
Mantis
The order of Mantis.
Order Mantodea
The European earwig Forficula auricularia causes economic losses in fruit and vegetable crops in the U.S.
What order does this pest belong to?
Order Dermaptera
Insects that belong to this order are permanent, obligate ectoparasites of birds and animals. They are wingless, blind, parasitic insects and highly host specific. They spread diseases in humans and domestic animals.
Order Phthiraptera
Order in which the Thrips tabaci belong to.
Order Thysanoptera
Order in which the true bugs belong to.
Order Hemiptera
Lacewings are predators of agricultural pests (aphids, whiteflies, and scale insects).
Antlion larvae live in soil and construct pitfall traps to snare their prey.
They are net-winged insects that have chewing mouthparts.
In what order do they belong to?
Order Neuroptera
Insects that belong to this order have wings called Elytra. Its larvae is called a grub. This order has the largest number of insect species.
Order Coleoptera
This order of insects are major pests of agricultural plants and stored products, including wood.
Order Coleoptera
Ladybird beetles (commonly known as ladybugs) are important biocontrol agents. What insects do they prey on?
Aphids and Scale insects
Insects that belong in this order are strong fliers. They have halteres, which are modified hindwings that function for balancing during flight. Some are predatory. Some are bloodsuckers. Some are well-known human disease transmitting agents. Some are crop pests.
Examples: Fruit flies, Leaf miners, Root maggots, house flies.
Order Diptera
Fleas have enlarged hind femur that is adapted for jumping. This separates them from lice, as the latter only have crawling legs. Fleas have haustellate mouthparts that act as siphon.
Unsa na order na-belong ang fleas? (gikapoy na ko pls forgive me)
Order Siphonaptera
Insects under this order are characterized by the presence of four membranous scaly wings. Some are nocturnal, some are diurnal (during the day).
The larvae are destructive to agricultural crops and forest trees, while adults are valued for their beauty.
Example: Moth, Butterfly, Skipper, Silkworm.
Order Lepidoptera
Butterflies: Clavate
Moths: Different types except Clavate
Skippers: ___________
Skippers: Clavate
Butterflies: wings held upwards
Skippers: wings held 45 degree angle
[T/F]
True
The order that, as a group, is considered to be the most beneficial group among insect groups.
Order Hymenoptera
Some species of the Order Hymenoptera are regarded as pests (sawflies, gall wasps, and some ants).
[T/F]
True
Most members of the Order Hymenoptera are extremely beneficial because they are either natural enemies of some pests or they serve as pollinators of flowering plants. [T/F]
True
What is the technical term used for the shed exoskeleton of insects or arthropods?
Exuviae
A cultural control that replaces a crop that is susceptible to a serious pest with another crop that is not susceptible, on a rotating basis.
Crop rotation
Refers to keeping the area clean of plants or materials that may harbor pests.
Sanitation
It is the provision of a pest insect’s preferred food near the crop to be protected.
Trap cropping
Trap crops should be destroyed along with the pest. [T/F]
True
What is the trap crop to be used if the main crop is garlic and the pest are thrips?
Basil and marigold
Some plants have physical and chemical adaptations that allow them to repel, tolerate, or even kill pests. What is this referring to?
Host Resistance
Bagging of fruits is cultural control. [T/F]
False. Bagging of fruits is mechanical control
These are methods that directly remove / kill pests.
Mechanical / Physical control
It is the use of living organisms to suppress pest populations.
Biological control
What are the three categories of natural enemies of insect pests?
Predators, parasitoids, and pathogens.
Organisms that feed on insects.
Predators
_________ are insects with an immature stage that develops on or in a single insect host, and ultimately kills the host.
Parasitoids
Organisms that are often microscopic in size that can cause disease.
Pathogens
Insecticides that are formulated to kill, harm, repel, mitigate one or more species of insect.
Insecticide
The use of chemicals to kill pests or to inhabit their feeding, mating, or other essential behaviors.
Chemical control
Order: Hemiptera
They are grayish brown to charcoal black adults with broad and hard abdominal covering. The grayish-pink eggs are laid in clusters.
They can cause wilting or bugburn and deadhearts. Their main host is rice.
Identify the pest.
Rice Black Bug
It is the drying of the central tiller during the vegetative stage.
Deadhearts
Order: Hemiptera
Can destroy rice at any stage of the plant, from seed to maturity.
Symptoms: Deadhearts and whiteheads.
Identify the pest.
Rice Stem Borer
Order: Hemiptera
The nymphs and adults feed on the rice, especially during milking or dough stage. As a result, the panicles are smaller, deformed and grains are spotty.
Identify the pest.
Rice Bug
Order: Diptera
Damaging stage is the larva, which prefers to feed on young and newly transplanted rice plant. There is no cultural control for this pest, but small wasps can parasitize the eggs and the maggots of this pest.
Identify the pest.
Rice Whorl Maggot
Order: Orthoptera
These are commonly inhabiting in all rice environments, especially in rainfed rice areas. The adults are known to swarm and migrate during favorable conditions, and outbreaks could occur during drought.
Identify the pest.
Locusts
Order: Hemiptera
This pest sucks the sap of rice plants, creating white patches on the tillers.
It is also capable of spreading virus disease, especially rice tungro.
Identify the pest.
Green Leafhoppers (GLH)
Order: Hemiptera
Brown in color, high population of this pest can cause hopperburn.
Identify the pest.
Brown Planthopper
Hopperburn is the condition where leaves turn orange-yellow before becoming brown and dry. [T/F]
True
Order: Lepidoptera
Major pest of corn. Biocontrol agent for this pest includes the Bacillus thuringiensis subsp. Kurstaki, and other parasitoids. Use of moderately resistant varieties will be significant.
Identify the pest.
Asian Corn Borer
Helicoverpa armigera
Corn Earworm / Cotton Bollworm / Tomato Fruitworm
Order: Coleoptera
Larvae and adults of the beetle feed on the soft tissues of the youngest leaf in the throat of the coconut palm and affected leaves dry up.
Identify the pest.
Coconut Leaf Beetle
Order: Coleoptera
Adults damage palms by boring into the center of the crown, where they injure the young, growing tissues, and feed on the exuded sap.
Identify the pest.
Coconut Rhinoceros Beetle
[Oryctes rhinoceros (L)]
Order: Homoptera
Vector of Abaca Bunchy Top Virus
Identify the pest
Abaca / Banana Aphid
[Pentalonia nigronervosa (Coq)]
Order of Eggplant Fruit and Shoot Borer
Order: Lepidoptera
Scientific name of the Eggplant Fruit and Shoot Borer.
Leuconoides orbonalis Guene’e
Order: Homoptera
Direct feeding damage is due to the removal of sap from leaves, pods, seeds, and other aerial plant parts.
Biological control for this pest includes ladybird beetles.
Identify the pest.
Aphids
Scientific name of the Common Cutworm
Spodoptera litura (Fabricius)
Order: Coleoptera
Recommended management:
- Strict quarantine regulation to prevent widespread distribution.
- Management of the farm planted to sweet potato.
Identify the pest.
Sweetpotato weevil
Order: Acarina
Causes damage to plants by feeding on leaves and sometimes fruit. It forms a mass of webbing over leaves and fruit, making it harder for the plants to thrive.
Identify the pest.
Red Spider Mites
Order: Lepidoptera
A serious exotic insect pest that tunnels into the flesh of mangoes, making them unfit to eat. Found in mangoes in Southern Palawan in May-June 1987.
Killed on sight.
Identify the pest.
Mango Pulp Weevil
Order: Lepidoptera
Borer larvae were found on young tender leaves, shoots, and buds of jackfruit trees, leading to drying and dropping in.
Identify the pest.
Jackfruit Fruit Borer
Order: Diptera
Internal mining by the larvae, allowing pathogenic fungi to enter the leaf.
Identify the pest.
Leaf Miner
Scientific name of Flea Beetle.
Psylloides balyi
Order: Thysanoptera
Attacks the terminal bud and two or four true leaves.
The plant is damaged by reduced stand, retarding growth, killed buds, and delayed fruiting. One of its host is onion.
Identify the pest.
Thrips
Scientific name of thrips
Thrips tabaci (Lindeman)
Order: Lepidoptera
This pest only attacks Cruciferae plants. Complete removal of foliar tissue except for the leaf veins.
One of cultural management is companion planting of cabbage + tomato + garlic.
Identify the pest.
Diamondback Moth
Order: Diptera
Rotting and premature dropping of fruits. Small discolored patches on fruits.
Identify the pest.
Melon fly / Fruit fly
Order: Lepidoptera
A serious pest that infects cucumbers and bitter gourds.
Symptom: Skeletonization (lace-like patches of intact small leaf veins)
Cucumber Moth
Scientific name of the Squash / Pumpkin Beetle
Aulocophora similis (Olivier)
Order: Hemiptera
Can seriously injure plants by sucking juices from them, causing leaves to yellow, shrivel, and drop prematurely.
Whitefly
Vector of Crazy bitter gourd virus and Papaya ring spot virus.
Aphid
Aphis gossypi Glover
Vector of Squash leaf curl
Whitefly
Bemisia tabaci (Gennadius)
Vector of Taro Feathery Mosaic virus
Gabi Planthoppers
Tarophagus proserfina
Scientific name for Green leafhopper
Nepothettix virenscens
Vector of Abaca Bunchy Top Virus
Abaca aphid
[Pentalonia nigronervosa]
Vector of Bean Mosaic
Bean aphid
[Aphis craccivora Koch]
Vector of rice grassy stunt virus
Brown planthopper
[Nilaparvata lugens]
Vector of Tomato Spotted Wilt
Thrips
[Thrips tabaci Lindeman]
The following are scientific name for an aphid, except:
a) Aphis craccivora Koch - Bean Aphid
b) Aphis gossypii Glover - Melon aphid
c) Myzus persicae Sulzer - Peach / Tobacco aphid
d) Pentalonia nigronervosa - Abaca Aphid
e) None of the above
None of the above
GOOD LUCK SA EXAM!!!
May the force be with you
