![Parsleyworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p32-parsleyworm.jpg?itok=jD7-8TkQ)
![Parsleyworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p32-parsleyworm.jpg?itok=jD7-8TkQ)
Caterpillars in Your Yard and Garden, Page 32
Reviewed
Parsleyworm caterpillars (Papilio polyxenes) are present from May to October. They produce three generations per year.
![Poplar tentmaker caterpillars.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p35-poplar-tentmaker.jpg?itok=9EOMc9Rh)
Caterpillars in Your Yard and Garden, Page 35
Reviewed
Poplar tentmaker caterpillars (Clostera inclusa) are present from spring to fall. They produce two generations per year.
![Armyworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p03-armyworm.jpg?itok=JuTqxoRy)
Caterpillars in Your Yard and Garden, Page 03
Reviewed
Armyworm caterpillars (Pseudaletia unipunctata) are present from early summer to fall. They produce three generations per year.
![Silverspotted skipper caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p38-silverspotted-skipper.jpg?itok=8-jBMaYK)
Caterpillars in Your Yard and Garden, Page 38
Reviewed
Silverspotted skipper caterpillars (Epargyreus clarus) are present in summer and fall. They produce two to three generations per year.
![Black cutworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p06-black-cutworm.jpg?itok=SXQouD5k)
Caterpillars in Your Yard and Garden, Page 06
Reviewed
Black cutworm caterpillars (Agrotis ipsilon) are present from late spring to fall. They produce one to three generations per year.
![Spiny oak slug caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p41-spiny-oak-slug.jpg?itok=4lftvIpE)
Caterpillars in Your Yard and Garden, Page 41
Reviewed
Spiny oak slug caterpillars (Euclea delphinii) are present in summer and fall. They produce one to two generations per year.
![Cecropia moth caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p09-cecropia-moth.jpg?itok=80BsnUzi)
Caterpillars in Your Yard and Garden, Page 09
Reviewed
Cecropia moth caterpillars (Hyalophora cecropia) are present from May to August. They produce one generation per year.
![Dusty birch sawfly caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p12-dusty-birch-sawfly.jpg?itok=5HlDxuiq)
Caterpillars in Your Yard and Garden, Page 12
Reviewed
Dusty birch sawfly caterpillars (Croesus latitarsus) are present in summer and fall. They produce two to three generations per year.
![Tiger swallowtail cateripllar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p44-tiger-swallowtail.jpg?itok=6prrsAJ_)
Caterpillars in Your Yard and Garden, Page 44
Reviewed
Tiger swallowtail caterpillars (Papilio glaucus) are present from May to October. They produce two to three generations per year. Preferred host plants include hoptree, birch, tulip tree, ash, basswood, cherry, apple, willow and magnolia.
![Elm sawfly caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p15-elm-sawfly.jpg?itok=gqGYallC)
Caterpillars in Your Yard and Garden, Page 15
Reviewed
Elm sawfly caterpillars (Cimbex americana) are present from summer to fall. They produce one generation per year.
![Unicorn caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p47-unicorn-caterpillar.jpg?itok=NJoGDJ3O)
Caterpillars in Your Yard and Garden, Page 47
Reviewed
Unicorn caterpillars (Schizura unicornis) are present from summer to fall. They produce one generation per year.
![Garden webworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p18-garden-webworm.jpg?itok=eN_fDE_O)
Caterpillars in Your Yard and Garden, Page 18
Reviewed
Garden webworm caterpillars (Achyra rantalis) are present from late spring to fall. They produce two to three generations per year.
![Viceroy caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p50-viceroy.jpg?itok=A4jACRZO)
Caterpillars in Your Yard and Garden, Page 50
Reviewed
Viceroy caterpillars (Limenitis archippus) are present from early summer to fall. They produce two generations per year.
![Cover art for publication IPM1019](/sites/default/files/styles/large/public/images/ipm1019cvr.jpg?itok=yruhXjnq)
Caterpillars in Your Yard and Garden
Reviewed
Caterpillars are some of the most easily observed insects in backyards and gardens. Learn to identify them so you will know what type of butterflies or moths they will turn into.
![Greenstriped mapleworm caterpillars.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p21-greenstriped-mapleworm.jpg?itok=Q739HX_6)
Caterpillars in Your Yard and Garden, Page 21
Reviewed
Greenstriped mapleworm caterpillars (Dryocampa rubicunda) are present from late spring to late fall. They produce one to two generations per year.
![Tussock moth caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p53-tussock-moth.jpg?itok=E8QdRxSq)
Caterpillars in Your Yard and Garden, Page 53
Reviewed
Whitemarked tussock moth caterpillars (Orgyia leucostigma) are present from May to October. They produce two generations per year.
![Hickory horned devil caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p24-hickory-horned-devil.jpg?itok=8fgE8cj_)
Caterpillars in Your Yard and Garden, Page 24
Reviewed
Hickory horned devil caterpillars (Citheronia regalis) are present from July to October. They produce two generations per year.
![Zebra swallowtail caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p56-zebra-swallowtail.jpg?itok=3MgG11vV)
Caterpillars in Your Yard and Garden, Page 56
Reviewed
Zebra swallowtail caterpillars (Graphium marcellus) are present from May to November. They produce two to three generations per year.
![Io moth caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p27-io-moth.jpg?itok=x35LlEfb)
Caterpillars in Your Yard and Garden, Page 27
Reviewed
Io moth caterpillars (Automeris io) are present from July to October. They produce two generations per year.
![Orangedog catterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p30-orangedog.jpg?itok=CfkPfF5t)
Caterpillars in Your Yard and Garden, Page 30
Reviewed
Orangedog caterpillars (Papilio cresphontes) are present from July to October. They produce two generations per year. They are considered a pest to citrus trees.
![Spider mite.](/sites/default/files/styles/large/public/2024-04/g07273cvr.jpg?itok=IQ-TPc_b)
Least-Toxic Control Methods to Manage Indoor Plant Pests
Reviewed
This publication discusses some of the least-toxic control options you can use for pests of houseplants, home greenhouses and interior plantscapes.
![Pickleworm caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p33-pickleworm.jpg?itok=fESfRmFp)
Caterpillars in Your Yard and Garden, Page 33
Reviewed
Pickleworm caterpillars (Diaphania nitidalis) are present from summer to fall. They produce two to three generations per year.
![Cover art for publication G7276](/sites/default/files/styles/large/public/images/g07276cvr.jpg?itok=40nmli1q)
Twig Girdler and Twig Pruner
Reviewed
Twig Girdler and Twig Pruner are long-horned beetle species that attack numerous types of valuable trees. Visit our website to learn more.
![Red-spotted purple caterpillar.](/sites/default/files/styles/large/public/2024-01/ipm1019cvr-p36-red-spotted-purple.jpg?itok=Bp7P6gzS)
Caterpillars in Your Yard and Garden, Page 36
Reviewed
Red-spotted purple caterpillars (Limenitis arthemis) are present from early summer to fall. They produce two generations per year.
![Cover art for publication G7360](/sites/default/files/styles/large/public/images/g07360cvr.jpg?itok=IeGtOEqH)
Boxelder Bug
Reviewed