Doug Wechsler / Large milkweed bug (Oncopeltus fasciatus) nymphs on Common milkweed (Asclepias syriaca) leaf, Pennsylvania, USA, August.
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Doug Wechsler / Mating pair of Large milkweed bugs (Oncopeltus fasciatus) on Common milkweed (Asclepias syriaca) leaf, Pennsylvania, USA, July.
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Doug Wechsler / Multicolored asian lady beetle (Harmonia axyridis) eggs and newly hatched larva on Common milkweed (Asclepias syriaca), Pennsylvania, USA, July.
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Doug Wechsler / Great spangled fritillary butterfly (Speyeria cybele) two on Common milkweed (Asclepias syriaca), Pennsylvania, USA, June.
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Doug Wechsler / Common milkweed (Asclepias syriaca), Todd Audubon Wildlife Sanctuary, Maine, USA, July.
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Doug Wechsler / Acrobat ants (Crematogaster ashmeadi) nectaring on Common milkweed (Asclepias syriaca), Pennsylvania, USA, July.
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Ann & Steve Toon / Common milkweed locust (Phymateus morbillosus), Samara private game reserve, Karoo, South Africa, January
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Doug Wechsler / Milkweed / Oleander aphids (Aphis nerii) on common milkweed (Asclepias syriaca). Philadelphia, PA. August
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Doug Wechsler / Milkweed tussock moth / tiger moth caterpillars (Euchaetes egle) first instar and egg mass on common milkweed. Philadelphia, Pennsylvania, USA. July
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Doug Wechsler / Large milkweed bug nymphs (Oncopeltus fasciatus) on common milkweed pod (Asclepias syriaca). Philadelphia, Pennsylvania, USA. July
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Doug Wechsler / Long-legged Fly (Condylostylus sp.) on Common milkweed leaf, Pennsylvania, USA
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Doug Wechsler / Caterpillar larva of Monarch butterfly {Danaus plexippus} on leaves of host plant Common milkweed (Asclepias syriaca) Adirondack Park, New York, USA