www.ipm.uconn.edu
July 8, 2016
NURSERY IPM UPDATES
Bi-Weekly Messages | IPM Program | University of Connecticut
Alejandro Chiriboga & Mark Brand
Featured arthropod
report: Coccinellid pests
Flea & Leaf Beetles: Quick Comparison
Counties: Fairfield, New London, Windham
Common names: Redheaded flea beetle &
Imported willow leaf beetle
Order Coleoptera, Family Chrysomelidae,
Species Systena frontalis (left picture) &
Plagiodera versicolora (right picture)
More @ UConn Nursery IPM Mini Fact
Sheets Series
Local News: CT drought
monitor
According to the U.S Drought Monitor
statistics released July 7, 2016, the entire
state of Connecticut (CT) was abnormally
dry or worse (D0-D4) and 43% of the state
was in moderate drought (D1-D4).
More @ U.S. Drought Monitor: CT Map
Regional News: ESA
position statement on IRM
The Entomological Society of America
(ESA) recently released a position
statement on Insecticide Resistance
Management (IRM) offering
recommendations on how to avoid insect
resistance to pesticides.
Insecticide resistance can develop in any
situation where insecticides are used to
control pest populations including the
control of ornamental pests in nurseries.
More @ ESA press release & ESA
Position Statement
Save the date
July 25-30 - UConn Extension hosts Bug
Week each July. There are interactive
events and programs for visitors of all ages
to explore the world of insects both
indoors and out.
Redheaded flea beetle (left) & Imported willow leaf beetle (right). Photo credits: Alejandro Chiriboga, UConn
Redheaded flea beetle, Systena frontalis
‣ Native throughout the Unites States.
‣ Damage: adults chew holes and shred leaves. Larvae feed on roots
and underground stems.
‣ Hosts: wide range including Forsythia, Hydrangea, Hibiscus, Ilex,
Itea, Rosa, Vaccinium, Weigela. Also perennials and annuals
including Asters, Coreopsis, Salvia, Veronica, Zinnia.
‣ Key beetle ID: shiny black adults with reddish head and hind legs
enlarged allowing adults to jump like a flea.
‣ Key larva ID: creamy white larvae with a brown head.
‣ Life cycle: yet to be determined in Connecticut. Three generations
a year have been reported in New Jersey.
Imported willow leaf beetle, Plagiodera versicolora
‣ Introduced throughout the Unites States.
‣ Damage: adults prefer to chew holes in young leaves. Larvae feed
in groups and skeletonize leaves, preferring older leaves.
‣ Hosts: feeds on Salix (willows) and Populus (poplars).
‣ Key beetle ID: oval metallic blue to greenish blue adults.
‣ Key larva ID: black larvae with rows of tubercles along the body.
‣ Life cycle: two generations a year.
Partially funded by USDA NIFA
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www.ipm.uconn.edu
July 8, 2016
Pest Report:
Pest Watch:
Contributions by A. Chiriboga; D. Ellis; J. Allen.
A
Counties: Fairfield, New London, Windham
Pest & Ornamental host detected (genus)
‣
Aphids
‣
Fall Webworms
‣
Flea beetles
(redheaded flea beetle)
Arthropods:
Diseases:
‣
Imported willow leaf beetles
‣ Aphids:
Aronia, Quercus, Spiraea
‣ Bacterial leaf spot: Salvia
‣
Japanese beetles
‣ Black root rot: Phlox
‣
Oriental beetles
‣ Downy mildew: Rudbeckia
‣
Lace bugs
‣ Impatiens necrotic spot virus:
Leucanthemum
‣
Leafhoppers
‣
Two-spotted spider mites
‣ Imported willow leaf beetles:
Salix
‣ Lace bugs:
Rhododendron
‣ Leaf hoppers:
Acer, Cotinus, Enkianthus,
Prunus, Quercus
‣ Redheaded flea beetles:
Forsythia, Hydrangea,
Cephalanthus, Weigela
‣ Thrips:
Asclepius
‣ Two-spotted spider mites:
Buddleia
‣ Pestalotiopsis dieback: Pieris
‣ Rhizoctonia tuber rot:
Asclepias
‣ Root rot: Pieris
‣ Rust: Miscanthus
‣ White smut: Gaillardia
Pest forecast tools @:
๏
NEWA Degree Days
More information on ornamental
hosts @:
๏
CAES Fact Sheets
๏
UConn IPM Program
๏
UConn Nursery IPM Mini
Fact Sheets Series
๏
UConn Plant Database
๏
UMass Landscape Message
UConn Plant Database Tips
by Mark Brand
At the core of this site are plant information pages that contain text and
photographs describing the important characteristics of each species.
Plant information can be directly accessed by clicking on the button
labeled “List by Name” and selecting the plant you are interested in.
You then arrive at a page that has images of the plant and text
information about habitat, habit and form, summer foliage, autumn
foliage, flowers, fruit, bark, culture, landscape uses, liabilities, ID
features, propagation and cultivars/varieties. Images are clickable to
view larger versions of the photos.
The UConn Plant Database is a website that is
dedicated to providing information about the
ornamental attributes, appropriate use, and
identification of woody landscape plants. The plants
contained in this resource are those that will grow in
USDA hardiness zone 6 or colder.
Dr. Mark Brand is a Professor of Horticulture at UConn.
More information @ UConn Plant Database
You can also search for appropriate plants by specifying landscape
situations and ornamental traits. Clicking on the “Search by Trait”
button brings you to a page where you can select plants by plant form
and size, foliage characteristics, hardiness zone, native status, and
various ornamental traits (flowers, fruit, fall color, etc.), and site
characteristics (sun exposure and soils). In addition, there is the ability
to select for special qualities such as invasive tendencies, deer
resistance, butterfly attraction, as well as availability of cultivars
(purple leaves, weeping forms, unusual flower color, etc.). Once search
criteria are entered, a list of appropriate plant options are provided and
one can then review the plant pages for each option.
Partially funded by USDA NIFA
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