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Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps...

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Wasps and Bees
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Page 1: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Wasps and Bees

Page 2: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Key Points – Bees and Wasps

• Although both bees and wasps can sting, they are very different kinds of insects with very different habits

• Almost all stings involve wasps, specifically the western yellowjacket and the European paper wasp

• All wasps and bumble bees may a new nest every year and abandon the old nest in fall

Page 3: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Key Points – Bees and Wasps

• Wasp traps only work to capture yellowjackets

• Most “wasp and hornet” sprays can be used to destroy nests in problem locations

Page 4: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Bees Wasps

Page 5: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Social Bees vs. Social Wasps

Food Habits

Physical Features

Nest Construction

-Nectar and pollen

(Important as

pollinators)

-Animal material

(meat and small

arthropods)

Pollen, nectar only

incidental foods

-More hairy

-Honey bee has a

barbed stinger

-Less hairy

-None have a

barbed stinger

-Made of wax

-Hexagonal cells

present

-Made of paper

-Hexagonal cells

present

Page 6: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 7: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey Bee

Apis mellifera

Page 8: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey bee

Nest constructed

of wax

Page 9: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Developmental Stages of Honey Bees

Page 10: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 11: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey Bees

produce a perennial

nest

Page 12: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Ideal Site for

Wild Honey Bee

Hive

-Located well above

ground

-Capacity of 15L to

75L

-Small entrance,

located at bottom of

cavity

Page 13: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Tree cavities are

the normal nest

site used by

honey bees

Page 14: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Wall voids of

buildings can

provide ideal sites

for honey bees to

locate a hive

Page 15: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Failure to find a suitable

nest site results in a

doomed colony that will

not successfully survive

winter

Page 16: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey bees – and most

bees – collect nectar as

their primary energy

source.

Page 17: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Frame Filled With Honey

Page 18: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey bees – and

most bees – use pollen

as their primary source

for proteins, fats and

most other nutrients

Page 19: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey Bees Carry

Pollen in a Pollen

Basket on the Legs

Page 20: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey Bees

Produce a Perennial

Nest

Page 21: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey Bee Colonies

Produce Swarms

This may be thought of as

a type of budding as a

means for the colony – a

superorganism – to

reproduce.

Page 22: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Hiving a swarm

Page 23: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey bee swarm hotline Colorado Beekeepers Association

coloradobeekeepers.org

1-877-779-2337

1-877-SPY-BEES

Page 24: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

The stinger of a

worker honey bee is

barbed

Page 25: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 26: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Honey bee stinger and

poison sac detach and

remain embedded in skin

Page 27: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Schmidt Sting Pain Index

Page 28: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Bumble Bees Bombus species

Page 29: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 30: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Bumble Bees

Page 31: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Bombus huntii, a

common “orange-

butted” bumble bee in

Fort Collins

Page 32: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

FROM:

Bumble bees produce

a new nest each year

http://www.xerces.org/
Page 33: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Bumble bees make hidden nests, usually

underground. Sites with insulating materials, such

as abandoned animal nests,are favored.

Page 34: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 35: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 36: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Bumble Bee Queens and Workers

Page 37: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

FROM:

Bumble bees produce

a new nest each year

http://www.xerces.org/
Page 38: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Bombus huntii – Overwintered queen on left

Page 39: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Wasps

Social Wasps

Yellowjackets

Hornets

Paper Wasps

Solitary Wasps

Hunting Wasps

Parasitic Wasps

Social Structures of Wasps

Page 40: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Wasps

Social Wasps

Yellowjackets

Hornets

Paper Wasps

Solitary Wasps

Hunting Wasps

Parasitic Wasps

Common Social Wasps Note: All are annual colony producers

Page 41: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Yellowjackets Vespula species

Page 42: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Prairie yellowjacket Western yellowjacket

Two species of yellowjackets predominate in Fort Collins

Page 43: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Western Yellowjacket (Vespula pensylvanica)

Most important

stinging insect in

the western US! Worker (female)

Male Season end queen (female)

Page 44: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Yellowjackets almost always nest below ground

Page 45: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 46: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 47: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Western yellowjacket nest exposed by skunk/raccoon digging

Page 48: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Western yellowjacket

nest at base of wall and

spruce tree in my yard

Note mud at entrance

from excavations

during colony

expansion

Page 49: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 50: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 51: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Yellowjackets produce and new nest every year

Page 52: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Annual life cycle

Typical colony size

around 250 - 300

individuals

Page 53: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Western yellowjacket Vespula pennsylvanica

The western yellowjacket

is a scavenger of many

sweet or animal (meat)

materials (e.g. your

sandwich and your soda)

Page 54: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Western Yellowjacket scavenging on

meat (left), dead earthworm (below,

left) and splattered insects on

automobile

Page 55: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Western yellowjacket

feeding on fresh chicken

parts

Page 56: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 57: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Wasp stingers are not barbed

Page 58: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Most “Bee Stings” Are Not

Produced By Bees!!!!

Yellowjackets are involved

in 90%+ of all “bee stings”

Page 59: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Yellowjackets as pollinators?

Marginal, at best.

Page 60: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Several traps can capture yellowjackets

Page 61: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Hornets Dolichovespula species

Examples: Baldfaced Hornet and Aerial Yellowjacket

Page 62: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Baldfaced Hornet

Dolichovespula maculata

Page 63: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Aerial Yellowjacket Dolichovespula arenaria

Page 64: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Baldfaced hornet gathering wood fibers for nest construction

Photograph by Jim Kalisch,

University of Nebraska

Page 65: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Baldfaced hornets nest

in trees and shrubs

Page 66: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Aerial Yellowjackets

nest under eaves and

on sides of buildings

Page 67: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

The baldfaced hornet and aerial

yellowjacket are predators. They

feed their young fresh insects

(bug burger)

Feeding Habits

Hornets never scavenge human foods

Page 68: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Hornets make a new nest every year

Page 69: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Paper Wasps

Polistes species,

primarily

Page 70: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Paper wasps are predators that feed their

young chewed up insects

They do not scavenge human foods

Page 71: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Photograph courtesy of Joseph Berger

Page 72: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Paper wasp gnawing on weathered board for wood fibers

Page 73: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Paper wasps native

to Colorado

Page 74: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

European Paper Wasp

A new species in Colorado

(post 2001)

Page 75: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Photograph courtesy of Joseph Berger/BugWood.org

Page 76: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Nesting in hollow of

metal building beam

Nesting under

eaves

Page 77: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Nest in a metal pipe

used for clothes line

Nest in an old boot

hung on a stake

Page 78: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Large Nest of European Paper Wasp

Page 79: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

European Paper

Wasp

Western

Yellowjacket

These are

two insects

that look a lot

alike!!!

Page 80: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Note trailing legs of European paper wasp

Western yellowjacket

Page 81: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Thinner body with

paper wasp

More compact body

with yellowjacket

Page 82: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

European Paper Wasp

vs.Western Yellowjacket

• Predator of insects, primarily

• Produces open nests above ground

• Less likely to sting than most social wasps/bees

• Not attracted to wasp traps

• Scavenger. Commonly visits food and garbage.

• Produces below-ground or hidden nest

• Readily stings when nest disturbed

• Attracted to wasp traps

Page 83: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Some Impacts of the

European paper wasp on the

Rocky Mountain West

• Added a significant new stinging pest

to region

– Highly visible

• Impacts on yard/garden Lepidoptera

• Impacts on some fruit production

• Stimulates stupid purchases

Page 84: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Nests are ubiquitous

and very frequently

observed. Stings are

common, although

not as common as by

western yellowjacket.

Page 85: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Impacts on

yard/garden

Lepidoptera

Page 86: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 87: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

European paper

wasps acting badly –

fruit injuries!

Page 88: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

It has stimulated sales of products useless for its

management.

Page 89: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

European Paper Wasp

vs.Western Yellowjacket

• Predator of insects, primarily

• Produces open nests above ground

• Less likely to sting than most social wasps/bees

• Not attracted to wasp traps

• Scavenger. Commonly visits food and garbage.

• Produces below-ground or hidden nest

• Readily stings when nest disturbed

• Attracted to wasp traps

Page 90: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Options to Control Nuisance

Wasps

• Wait for the colony to die out.

• Kill out problem nests with

wasp and hornet spray

• Early season trapping may

reduce numbers of

yellowjackets

Page 91: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Typical Wasp and Hornet Spray Product

• Has a quick knockdown

insecticide

• Has a more persistent

insecticide

• Has a propellent, often

designed to produce

directed jet with some

force

Page 92: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Control of paper wasps with “wasp and hornet” sprays

Colony is exposed Generally easy to access Generally effective with a single application

Page 93: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Control of hornets with “wasp and hornet” sprays

Colony is exposed Generally difficult to access Generally effective with a single application

Page 94: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Control of yellowjackets with “wasp and hornet” sprays

Colony is not exposed and may be hidden deeply Generally difficult to access Generally required multiple treatments with persistent insecticides

Page 95: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Spraying Wasp Nests

• Best done at night or when

temperatures are cool enough to

prevent flight

• If treating at night do not hold the

light!

Page 96: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Wasp Traps

Page 97: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

When to optimally use

a trap for yellowjacket

control?

Mid to Late Spring.

Target the overwintered

queen before she has

established a colony

Page 98: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Traps do not

capture the

European paper

wasp or any

other paper

wasps

Page 99: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

1

3

2 329

174

Page 100: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Comparison of Yellowjacket

Capture in Retailed Traps • Sterling Rescue! Reusable Trap – 64.8

• Sterling Rescue! Disposable Yellowjacket Trap – 25.5

• Safer Brand Deluxe Yellow Jacket/ Wasp Trap – 17.8

• Victor Yellow Jacket Magnet Bag Trap – 9.3

• Safer Brand disposable Yellow Jacket Trap – 9.0

• Victor Yellow Jacket Trap – 1.0

• Raid Disposable Yellow Jacket Trap – 0.0

Page 101: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

The two traps that

were most effective

at capturing

yellowjackets

Page 102: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

A totally useless trap to

capture yellowjackets – or

any local wasps

Page 103: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Another useless

yellowjacket trap

Page 104: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Traps do not

capture the

European paper

wasp or any

other paper

wasps

Page 105: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

WHY Trap

Wasp

Hornet

Yellowjacket

Page 106: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 107: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,
Page 108: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Trap next to Waspinator Paired trap out-of-sight

of Waspinator

Page 109: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

9.6 Western yellowjackets/day 10.6 Western

yellowjackets/day

Results – No significant differences in capture of

western yellowjackets related to Waspinator

proximity

Page 110: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Waspinator – Attempt to

mimic nest of the

Baldfaced Hornet????

Page 111: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Key Points – Bees and Wasps

• Although both bees and wasps can sting, they are very different kinds of insects with very different habits

• Almost all stings involve wasps, specifically the western yellowjacket and the European paper wasp

• All wasps and bumble bees may a new nest every year and abandon the old nest in fall

Page 112: Wasps and Bees - Colorado State Universitywebdoc.agsci.colostate.edu/bspm/Wasps and Bees.pdfWasps and Bees . Key Points – Bees and Wasps •Although both bees and wasps can sting,

Key Points – Bees and Wasps

• Wasp traps only work to capture yellowjackets

• Most “wasp and hornet” sprays can be used to destroy nests in problem locations


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