Exam 1 (Entomology) Flashcards
Survives extreme cold conditions
Overwintering
Survives extreme heat/dryness conditions
Aestivation
Mites and spiders; 1 (mites) or 2 (spiders) body regions, 8 legs, lack wings and antennae
Class Arachnida
Insects; 3 body regions, 6 legs, antennae, wings, exoskeleton, symmetrical
Class Hexapoda
egg, larva, pupa, and adult
Complete metamorphosis (holometabolous)
egg, nymph, adult
Gradual/Incomplete metamorphosis (hemimetabolous)
Moulted exoskeleton
Exuviae
The form of nymph and larva between moulting stages
Instar
Mix of feces and sawdust/leaf particles expelled by feeding insects
Frass
1st instar of scale insects and white flies
Crawler
Mites
Acari-
Spiders
Araneace-
Wasps and bees
Hymenoptera
Beetles
Coleoptera
Moths and butterflies
Lepidoptera
Grasshoppers
Orthoptera
True flies
Diptera
Feeding, sensory, brain
Head
Wings and legs (movement)
Thorax
Digestion, reproduction, excretion
Abdomen
Dorsal surface of the prothorax which in some insect shields the head
Pronotum
Small triangle plate behind the pronotum and between the forewing bases
Scutellum
When the veins have hardened in the wings to give structure
Sclerotized
Stunted wing (on true flies)
Halteres
Abdominal legs
Prolegs
Praying mantis type front legs for catching prey
Raptorial
Long and thin legs made for running fast
Cursorial
Chunky legs for digging
Fossorial
Jumping hind legs like grasshoppers
Saltitorial
Hook/clawing legs to hold onto things (lice)
Grasping
2 eyes, detect UV, perception of movement
Compound eyes
3 simple eyes in a triangle pattern; enhance light detection
Ocelli
Usually on larvae; simple eyes on head; caterpillars
Stemmata
Labrum, mandible, maxilla, labium
Mouthparts
Many houseflies that sponge up food
Sponging
Feeding method for honeybees and bumblebees
Chewing and Lapping
Adult butterflies and moths; sucks up nectar to feed
Siphoning
Open body cavity in which blood flows and bathes tissues and organs
Hemocoel
Blood in insects
Hemolymph
Heart-like structure
Dorsal vessel
Allow hemolymph to enter and exist a certain part of the body
Ostia
Openings on the outside of the body that let air into the tracheal system
Spiracles
Air-filled tubes branch throughout the body
Trachea
Hormone that controls moulting
Ecdysone
Hormone that regulates the making of ecdysone
Juvenile hormone
Whole stage of metamorphosis (egg–>adult)
Life cycle
How long it takes the life cycle to complete
Generation time
Protective body covering that reduces water loss, has pores, joints between plates, reflect light, and release pheromones
Exoskeleton
organism that causes economic or aesthetically significant harm/damage to a crop or landscape
Pest
prior to 1939
Insecticide Era
1939-1962
insecticide era
decision making process where you’re selecting, integrating, and implementing pest control strategies that’re based on economic, ecological, and sociological consequences
IPM
order of control tactics to use
cultural –> mechanical/physical –> genetic –> biological –> chemical
the point where most insecticides don’t work anymore - insects can still do damage even when insecticides are added
insect resistance
when chemicals are integrated into bodies of consumers and moves up the food chain
biomagnification
when target pest populations that has been suppressed using pest control measures rebounds worse than before
primary pest resurgence
when a target pest is suppressed and minor pest is able to grow quickly because they have no more competition
secondary pest outbreaks
closely associated with people; an ecological consequence
sociological consequenecs
components of an IPM program
- develop an IPM policy, 2. designate pest management roles, 3. establish IPM objectives, 4. develop a knowledge base, 5. monitoring protocols, 6. decision making guidelines, 7. control tactics, 8. evaluating an IPM program
document that demonstrates that commitment of the company; guide for the development of the IPM program
- developing an IPM program
identifying the roles of staff within the program; communication techniques; education and training
- designate pest management roles
identify needs and expectations of clientele while being mindful of the budget; plant quality, management practices, being realistic
- establish IPM objectives
key pests, key plants, key locations, plant inventory; site history; lots of research; record keeping
- develop a knowledge base
pest species that cause the most damage and require control tactics most frequently; should know life cycle and biology
key pests
plant genera that are the most suceptible
key plants
sites in landscapes where problems arise; where people notice problems the most; more management required
key locations
regular inspections of the managed system for insects, weeds, disease, and environmental factors; identify damage, pests, and beneficials
- monitoring protocol
mean # of insects / sampling unit
pest density
a measure of the relative warmth that accumulates each day; estimated amount of cumulative insect development that occurs over a year; amount of development that occurs in 1 day when the temp is 1 degree over the threshold (50 degrees)
growing degree days (GDD)
cyclical and seasonal biological events related to climate - flowering and insect emergence - temperature dependent; better for visual cues in the spring; pest predictive calendar database
plant phenological indicators (PPI)
how many pests cause how much damage? how do you decide when to take action?
- decision making guidelines
what’s affecting the quality or vitality of the plant
damage
lowest pest population level that will cause economic damage (calculation equation); amount of injury that will justify the cost of control
economic injury level (EIL)
lowest pest population that causes aesthetic damage, protect appearance (no equations); based on expert opinion; amount of injury that with justify the cost of control
aesthetic injury level (AIL)
pest density at which control measures should be applied to counteract the damage; should be BELOW EIL or AIL; depends on the pest and the plant and location
action/economic threshold
measures taken to control pests in a landscape
- control tactics
economic efficacy, environmental sustainability, and sociological ability
- evaluating an IPM program
preclude a pest population from reaching a damaging level - implemented before; depends on economic/ecological cost, certainty of damage, and short time window for damage to occur
preventative control tactics
remedy for pest population control when there’s an outbreak
curative control tactics
plant care, landscape design, and sanitation that can prevent outbreaks; biodiversity and landscape complexity; water management, fertilization, mulching, pruning, plant installation, and plant thinning
cultural controls
remove pest or exclude them, make the area inhabitable; need to do comparison for laborious work
mechanical/physical controls
plants that have resistance to pests; choosing to put these in the landscape is a cultural control, but breeding is this type of control; sterile male release control; genetically modified biocontrol agents
genetic controls
make sure non-native species never get to the U.S. in the first place; wood borers often come on shipping palates; prevent exotic pest species and eradicate populations quickly; stop at port of departure and arrival; quarantine and inspections
regulatory controls
the use of pathogens, predators, and parasitoids to suppress pest populations (natural enemies0
biological controls
feeds on only one type/taxa or prey/host
specialist
feed on many different types of prey/host
generalist
bacteria, viruses, fungi, and nematodes that cause disease in insects - entomopathogenic; normally slow acting; compatible with predators and parasitoids
pathogens
small insects that slowly kill and consumes a host/larger insect; develop on/in host
parasitoids
feeds and develops inside the host
endoparasitoids
lay their eggs and develop outside the host - feed thru cuticle
ectoparasitoids
generally large, active, and eat many prey that’re the same size or smaller
predators
when the ecosystem benefits humans
ecosystem services
establishment of a species of a natural enemy from original home of the invasive pest and introduced to control invasive pest
classical/importation
attempts to maintain species of beneficial organisms; enhancement of their habitat to promote survival and/or avoid doing things to harm natural enemies
conservation
when existing natural enemy populations are low/absent, additional predators/parasitoids may be purchased and released; great for greenhouses
augmentation
pathogens/entomopathogenic nematodes may be formulated into a commercial product that’s applied in a method similar to conventional pesticides
formulation