strange bug
Hi, I hope this photo is enough for you to help me. I found this bug in some pond water and thought at first it was a small hollow stem but then the stem moved around, looking closely I could see legs coming out of the straw. It stretched out many times but then went back into the stem, like a hermit crab. Can you tell what it is? Thanks,
Sue MacMillan
Adelaide, South Australia.

Hi Sue,
What a wonderful image of a Caddisfly Larva. Caddisflies are in the order Trichoptera. The larvae are aquatic and build homes for protection. Each species has a distinct type of home. Some like yours, use hollow sticks. Others cement sticks or pebbles or shells together.

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