Monday 20 July 2009

Playing catch up

In the normal order of things, higher order species tend to prey on lower-order species, so wasps and bees tend to be predators on flies (or members of their own order). The Conopid fly Sicus ferrugineus, however, reverses this trend. These are parasitic on bumblebees, stapling a single egg into the soft underside of the worker's abdomen. This oviposition is said to take place in flight, but I have never seen it happening. Once the bumblebee has been parasitised it tends to change its feeding habits, presumably to the benefit of the fly larva.


Mesembrina meridiana is easily recognisable due to the orange wing base. The name indicates that it is a noon flyer, and that's when I usually see them.


Angelica has flowered and that means plenty of shots of nectaring insects. this is the Tree Wasp - Dolichovespula sylvestris. It has an overall orange feel to the colouration and the antennae bases are yellow. Facial decoration is a single small spot.


This male hoverfly looked unusual, but it consistently keys out to the very common Eristalis pertinax.


Trombidium sp. mites are usually seen scrambling over the base of plants as they search for rotting vegetation. This one was sunning on a grass blade.


Those of you who have been following my websites for a few years will know that this is one of my favourite flowers: Slender St. John's Wort - Hypericum pulchrum. The latin name shows that I'm not alone in that opinion.


This pristine flower of Meadow Buttercup - Ranunculus acris - caught my attention:


Finally for today - Eyebright. That's as far as the id is going.

1 comment:

Gill said...

"Once the bumblebee has been parasitised it tends to change its feeding habits, presumably to the benefit of the fly larva" for sure - in what way does it change? I've seen a good few bumbles recently that seemed very sluggish - #i wonder if they'd been got at?

Lovely hypericum lighting up the day.

Fantastic shot of eyebright, which is a real pain to get good pics of, for me anyway.