The Little Things Of Life

Spring is now gathering pace, and the days have grown to be almost as long as the nights. This week the Azores High has arrived over Ireland, bringing us clear skies – gorgeous warmish sunny days and frosty nights. But the warm days have caused insects to appear and there is a population explosion of Seven-spot Ladybirds (Coccinella septempunctata). They can be seen basking on trees, shrubs and walls all across Wicklow right now.

A Seven-spot Ladybird basking on Vinca. These predatory beetles also like to gorge on pollen when it's available. They are larger than most other Irish ladybird species.
A Seven-spot Ladybird basking on Vinca. These predatory beetles also like to gorge on pollen when it’s available. They are larger than most other Irish ladybird species.

ANot quite so noticeable as these bright red ladybirds, but almost as numerous, are Green Shieldbugs (Palomena pristina) which have truly awesome camouflage. In summer they are bright green, but in winter become dead-leaf brown. Most are still that colour right now, but will soon become brighter.

A not so green Green Shieldbug sunbathing on the edge of a plant container. In another few weeks this one will be bright leaf green, provided it lives that long. These insects have excellent defences so there's a good chance it will live for a good long time.
A not so green Green Shieldbug sunbathing on the edge of a plant container. In another few weeks this one will be bright leaf green, provided it lives that long. These insects have excellent defences so there’s a good chance it will live for a good long time.

One especially interesting insect I’ve seen this week is a type of moth, the Dotted Border (Agriopis marginaria) is a little bit smaller than a butterfly, and very similar in appearance. It is a late-winter/early-spring species and so you have only a few more weeks to see them this year, if even that much. They readily come to light. The one I photographed is a male, and this is easy to tell because of the typical feathered antennae, but also because the female of the species has only stubs for wings, and must walk about on foliage wafting pheremones on the air so that she can be found by the male. Keep an eye around window frames for these guys.

Dotted Borders are quite drab-looking but have a distinctive row of dots along the edges of their wings. Males come to windows by night, attracted to the light, apparently due to a chemical emitted by lightbulbs which is very similar to the pheremone emitted by the female as an attractant.
Dotted Borders are quite drab-looking but have a distinctive row of dots along the edges of their wings. Males come to windows by night, attracted to the light, apparently due to a chemical emitted by lightbulbs which is very similar to the pheremone emitted by the female as an attractant.

 

Leave a Reply

Your email address will not be published. Required fields are marked *