Konrad Wothe / Larvae of Birch sawfly (Craesus septentrionalis) in alarm position, Upper Bavaria, Germany. October.
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Lorraine Bennery / Dusky birch sawfly (Croesus septentrionalis) eating Alder leaves (Alnus glutinosa), Loire river, France, September.
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Lorraine Bennery / Dusky birch sawfly (Croesus septentrionalis) eating Alder leaves (Alnus glutinosa), Loire river, France, September.
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Lorraine Bennery / Dusky birch sawfly (Croesus septentrionalis) eating Alder leaves (Alnus glutinosa), Loire river, France, September.
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Lorraine Bennery / Dusky birch sawfly (Croesus septentrionalis) eating Alder leaves (Alnus glutinosa), Loire river, France, September.
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Clay Bolt / Dusky birch sawfly (Craesus latitarsus) larva, standing up in defensive display, South Carolina, USA, January.
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PREMAPHOTOS / Hazel sawfly larvae (Craesus septentrionalis) cocking their tail ends in the air in a defensive pose on alder, UK
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PREMAPHOTOS / Sawfly larvae on Alder leaf {Craesus septentrionalis} England, UK
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Konrad Wothe / Sawfly (Craesus septentrionalis) larvae in defensive posture, Upper Bavaria, Germany
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Konrad Wothe / Sawfly (Craesus septentrionalis) larvae in defensive posture, Upper Bavaria, Germany
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Konrad Wothe / Sawfly (Craesus septentrionalis) larvae in defensive posture, Upper Bavaria, Germany
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Will Watson / Group of Hazel sawfly (Craesus septentrionalis) caterpillars crawling on Hazel (Corylus avellana) leaf, Roundhill Wood, Heart of England Forest, Worcestershire, UK. August.
