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Spotted lanternflies spend the winter
in the egg stage. Egg masses would
be present in Iowa from late July – the
following spring.

Younger nymphs are black wth white spots. Lawrence Barringer, Pennsyl-
vania Department of Agriculture, Bugwood.orgCaption
In addition to consuming the sap they
Older spotted lanternfly nymph with the red, black and white markings.
Lawrence Barringer, Pennsylvania Department of Agriculture, Bugwood. produce large amounts of honeydew – a
org polite name for the sticky excrement of
Nymphs: Spotted lanternfly nymphs sap-feeding insects. Honeydew contains
have equally striking colors. Young plant sugars and attracts sweet feeding
nymphs are black with white spots and insects such as wasps. Sooty mold will
older nymphs are red and black with also grow on honeydew covering leaves,
white spots. Nymphs are fond on host branches and surrounding areas with
trees, usually on branches. They will move a black substance. It is not harmful to
quickly around the branch to avoid being humans, but can block sunlight to leaves.
seen.
In Iowa, nymphs start hatching from
eggs in April and develop throughout the
early summer and be present until mid-
July when they molt to the adult stage.
Nymph stages and adult stages overlap
a great deal and we would expect to
see nymphs as well as adults through
September.

Damage
Spotted lanternfly feed on a wide rage of
host plants. In North America they are
commonly reported on tree of heaven Reporting a spotted lanternfly
(an invasive tree), but also on valuable If you spot an insect you think could be
landscape and food crops including grapes, a spotted lanternfly in Iowa, please take
hops, cherries, plum, apple and black a picture, collect the insect, and make
walnut. Landscape plants most frequently note of where you are located. Photos can
infested include maple, oak, pine, poplar, be submitted through this Iowa Invasive
sycamore, and willow.
Species Tracking website for confirmation.

IPMA Connection • 3rd Quarter, 2022 Page 9