Pholisora catullus, the common sootywing or roadside rambler, is a butterfly of the family Hesperiidae. It is found from the central parts of the United States, south to central Mexico. Strays may colonize up to southern British Columbia, northern Michigan, southern Quebec and southern Maine. It is not found on peninsular Florida.
 The wingspan is 25–33 mm. There are two generations with adults on wing from May to August in the northern part of its range and from March to November in Texas.
 The larvae feed on Chenopodium album, Amaranthus and Celosia species. Adults feed on flower nectar from various flowers, including dogbane, marjoram, oxalis, white clover, common milkweed, peppermint, cucumber and melon.

Pholisora catullus, commonly known as the Elm Leaf Beetle, is considered a tree pest because its larvae feed on the leaves of elm trees, causing defoliation and potentially weakening the tree's health and vitality.

tree pest

Pholisora catullus, or the Elm Leaf Beetle, is considered a garden pest because its larvae can also feed on the leaves of various garden plants, including vegetables and ornamental plants, causing damage and reducing their aesthetic value.

garden pest

Pholisora catullus, also known as the Elm Leaf Beetle, is considered a crop pest because its larvae can feed on the leaves of certain crops, such as potatoes and beans, leading to reduced yields and potential economic losses for farmers.

crop pest

Pholisora catullus, or the Elm Leaf Beetle, is considered a pest because its larvae feed on the leaves of trees, garden plants, and crops, causing damage and reducing their health, productivity, and aesthetic value.

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When does common sootywing fly?

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