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Tag Archives: ladybird

The ladybird lifecycle

09 Tuesday Aug 2016

Posted by sconzani in insects, nature

≈ 7 Comments

Tags

Halyzia 16-punctata, harlequin ladybird, Harmonia axyridis, ladybird, ladybird larva, ladybird lifecycle, ladybird pupa, Orange ladybird

Just like every other insect, a ladybird goes through a complete transformation during its short, one-year life but the various stages are something I’ve only become aware of this year so I thought I’d share them with you.

160809 ladybird (1) 22 spot
160809 ladybird (2)

Adult ladybirds spend the cold winter months in a dormant state, awakening in the springtime as the weather begins to warm up. After munching away on some aphids to get their juices flowing again, they look for a member of the opposite sex and mate. I don’t have any egg photos but they are, apparently, bright yellow and are laid on the underside of leaves. Once the mating and egg-laying are complete, the adult ladybirds die.

160809 ladybird (3)
160809 ladybird (4)
160809 ladybird (5) orange Halyzia 16-punctata

Depending on the temperature and weather conditions, the eggs hatch after 3 to 10 days and the little larvae immediately begin eating: scale insects and aphids are their favourites so you can see why gardeners love them. At this stage, they look nothing at all like ladybirds, though they do have unique patterns – left and centre above are Harlequins (Harmonia axyridis) and the one on the right is an Orange (Halyzia 16-punctata).

160809 ladybird (6)
160809 ladybird (7)

After 3 to 4 weeks of constant eating, the larvae pupate, shedding their larval skin and changing into this strange-looking blob you can find attached to the tops of leaves. The metamorphosis from larvae to adult ladybird only takes 7 to 10 days – a miracle really!

160809 ladybird (8)

When the adult ladybird first emerges from its pupa, it is very pale and takes a little while for its final colours to show, though you can usually see traces of its spots. And that’s it! The adult will trundle around the leaves, eating all those pesky aphids until the winter months come, and the whole process will begin all over again.

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Itsy bitsy, teenie weenie

11 Friday Mar 2016

Posted by sconzani in insects, nature

≈ 3 Comments

Tags

Halyzia secedimguttata, ladybird, Orange ladybird

It seems you never know what you might find inside an old rubbery Jelly ear fungus. I certainly didn’t expect to find this delightful little creature, an Orange ladybird (Halyzia secedimguttata). They usually overwinter in a cosy spot amongst the leaf litter or tucked away in a crack in tree bark but the Jelly ear was on a fallen branch and I guess it looked like a snug cave to an insect that’s only 4-6mm long.

160311 orange ladybird (1)

Until 1987 the orange ladybird was thought to live only in ancient woodland but then it discovered it rather liked living on sycamore trees and later developed a liking for ash trees as well, so now you can find it in any woodland, park or garden in Wales and England where these trees grow. It is less common in Scotland apparently – perhaps too cold?

160311 orange ladybird (2)

The Orange ladybird feeds on the powdery mildew fungi that grows on trees and has an interesting lifecycle, laying batches of up to 40 eggs at a time, which hatch as larvae, which eventually pupate while the adult ladybird develops. Fascinating!

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There’s a cannibal in my kitchen

12 Saturday Dec 2015

Posted by sconzani in insects, ladybird, nature, nature photography, winter

≈ Comments Off on There’s a cannibal in my kitchen

Tags

harlequin ladybird, hibernation, insect, invasive species, ladybird, ladybug, winter

For the third time in as many weeks a Harlequin ladybird (Harmonia axyridis) has appeared as if from nowhere in my kitchen. They like to find somewhere cosy to hibernate the winter away so I’m sure a warm spot near my gas boiler would suit them very well and normally I wouldn’t mind but this is the most invasive ladybird on earth.
151212 ladybird harlequin (1)

The voracious little Harlequin originated in Asia but was introduced firstly to North America and later to Europe to control aphids. Though it only arrived in Britain in 2004 – perhaps blown across the Channel, or it may have hitched a ride on a vehicle – it has already spread throughout half these isles. The problem is that the Harlequin doesn’t just eat aphids; not only does it compete with native ladybirds for food but it also devours their eggs and larvae, as well as the eggs and caterpillars of butterflies and moths. It may look cute but it has the devastating potential to wipe out all 26 resident species of ladybird.

This is one time when I really wish this ladybird would fly away home!

151212 ladybird harlequin (2)

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About me

sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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