How Hoverflies Spawn Maggots that Sweeten Your Oranges

From Deep Look

How Hoverflies Spawn Maggots that Sweeten Your Oranges
4 min3rd4th5th6thScience
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Summary

A hoverfly looks like a little bee, but its wriggly young are aphid-hunters that protect orange trees. Deep Look follows the hoverfly's life cycle from egg to helpful larva to flower-visiting adult.

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Teaching resources

Discussion questions

Talk about it

A hoverfly lays eggs near aphids. The larvae (maggots) hatch and eat aphids that would harm citrus trees, then grow up into adults that visit flowers and help pollinate. Each life-cycle stage plays a different, useful role.

  1. What do hoverfly larvae eat that helps orange trees?
  2. How does the adult hoverfly help flowers?
  3. How does the hoverfly change through its life cycle?

Quick work-a-long

Vocabulary: larva, aphid, pollinate, life cycle.

Try it: Draw the hoverfly life cycle: egg, aphid-eating larva, flower-visiting adult. Write how each stage helps a farmer.