| Woodlice |
| Oniscidea |
| Woodlice, these small land-dwelling crustaceans, are a unique group called Oniscidea. Unlike their ocean-dwelling relatives, woodlice have evolved to live entirely on land. You’ll often spot them in damp, shady places like under rocks, logs, or piles of leaves. Their unique ability to recycle organic material by eating rotting plant material is a fascinating part of nature, helping to return nutrients to the soil. What They Look Like: Woodlice have a hard, segmented shell and an oval-shaped body. They have seven pairs of legs and two sets of antennae—though only one set is easy to spot. Some types can even curl into a tight little ball when they feel threatened, a trick known as “conglobation.” How They Reproduce: The female woodlice carry their eggs in a marsupium pouch on the underside of their body. When the young hatch, they already look like tiny versions of the adults and stay in the pouch for a little while before heading out into the world. This keeps them safe and moist during those vulnerable early days. Types Found in the British Isles: Around 35 woodlice species are native to the UK, and about 10 more have made themselves home—often in greenhouses. Some of the most common ones include: |
| Common Rough Woodlouse (Porcellio scaber): Easy to recognize thanks to its bumpy shell. It’s hardy and turns up in lots of different places. Common Shiny Woodlouse (Oniscus asellus): Has a smoother body and is often seen in damp areas. Common Pygmy Woodlouse (Trichoniscus pusillus): Very small and often missed, but common in the right spots. Common Pill Bug (Armadillidium vulgare): Famous for rolling into a tight ball—this one’s a regular in gardens and wooded spots. All these species, from the Common Rough Woodlouse to the Common Pill Bug, play a crucial role in the ecosystem. They help break down dead organic matter, a quiet but essential task that keeps soil healthy and fertile. Their work often goes unnoticed, but it’s a vital part of the natural world we should all appreciate. |
| Where They Live & What They Do: Woodlice are primarily active at night and prefer damp places because they lose moisture quickly. You’ll often find them in compost heaps, under stones, or decaying wood. They feed on dead and decaying stuff and, in doing so, help break it down into nutrients that plants can absorb. Why They Matter: Woodlice might not get much attention, but they’re crucial to the health of ecosystems. By recycling organic material, they help build and maintain healthy soil. What’s truly impressive is their wide range of adaptations, allowing them to thrive in various environments across the UK and beyond. |
Earthly Comforts 
Thank you for sharing your knowledge, Rory. Creepy crawlies have roles in the ecosystem to maintain balance.
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Indeed they do Eugenia, tis a pity not many people understand it .
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😊
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