Household Invaders Associated with Landscapes. Dr. David Shetlar (the BugDoc) The Ohio State University/OARDC OSU Extension Columbus, OH. © D.J. Shetlar, 2002, all rights reserved. Why are household invaders associated with landscapes?. Landscapes provide the 3 essentials!. Food Water
Dr. David Shetlar (the BugDoc)
The Ohio State University/OARDC
© D.J. Shetlar, 2002, all rights reserved
Landscapes provide the 3 essentials!
Slugs & Snails
Ground Nesting Wasps
Ants, ground nesting
Ants, carpenter & cavity
Pine leaf-footed bugs
Moles, voles and shrews
MC Asian lady beetle
Soldier & Ground Beetles
mulch and irrigation
aphids, mealybugs, scales
European earwig female and egg mass (under landscape timber).
Ground beetle larvae are also predators.
Feed on young plants, clippings & fungi, centipedes are predators
Too much mulch
Fresh clippings or compost
Sowbug, pillbug (Isopoda)
Feed on insects and other arthropods
mulch & irrigation
landscape stones, timbers, etc.
Jumping spiders are common landscape “stalking” predators which may end up inside buildings.
Wolf spiders also stalk their prey. Males commonly invade buildings in late summer while looking for mates.
Brown recluse spiders prefer undisturbed habitat, especially cavities under bark of fire wood.
Widow spiders commonly build their tangle webs around night lights.
Feed on young/soft plants & clippings
mulch & irrigation
thick lawns with thatch
Snails in landscapes generally need soft plant tissues and moisture.
Feed on grasses & some plants
mild winter temperatures
cool spring or fall temperatures
thick turf next to home
Clover mites laying eggs under irrigation switch box case.
Clover mites on masking tape from basement wall!
General predators and scavangers
bare ground (solitary wasps)
Contents of German yellowjacket nest in above juniper.
Polistes wasp chewing up a cutworm larva to take back to nest.
General scavengers & honeydew
aphids & scales
open areas (thin turf)
Cornfield ants swarming on landscape timbers. Home owner thought they were termites!
Pavement ant colonies commonly battle each other.
Fire ants commonly defend honeydew produces like these pine tortoise scales.
Fire ants can also be considered beneficial when they kill and eat other insects like this mole cricket.
Associated with tree rots
Properly prune trees
Keep tree branches from house
Reduce honeydew producers
Irrigation cover in FL lawn.
Carpenter ant colony under cover.
Parasites associated with animals
Mulched pet sleeping areas
Weedy areas, low shrubs
Ground covers with mice or voles
Blacklegged (deer) tick female
Fleas often infest landscape areas where pets rest (mulch areas!) or other vermin are encouraged.
Roof rat feeding in bird feeder!
Mosquito larvae can breed in water that collects in plant cavities, but they can certainly utilize backyard “water decorations.”
Pine Leaf-footed Bugs
Feed on seeds of host trees
Remove boxelder, especially females
Remove Scotch and pitch pines
Boxelder bugs seem to prefer boxelder trees, but they can easily breed on maples and ashes!
The pine leaffooted bugs feed on seed cones of pines.
Most people have been “indoctrinated” to believe that moles mean white grubs. The number one food of moles is EARTHWORMS!
Voles (meadow mice) need varied habitat for food. The prefer herbaceous weeds, tall, thatchy turf and MULCH.
Voles are herbivores
encouraged by ground covers
and high cut turf
Moles & Shrews are insectivores
encouraged by insects (grubs)
moles feed on earthworms!
Remember the 3 essentials!
tree stalk Naples, FL
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