In spring and early summer many trees and shrubs come into bloom, and many are so heavily in bloom that they are like the terrestrial equivalent of coral reefs, absolutely teeming with wildlife of all kinds, shapes, sizes and colours. Take the blooms on this massive shrub in my garden for example, a Wedding-Cake Viburnum, which blooms from May to June in good years like this one, and which is as old as I am. It looks like a giant icing-covered cake:
Anyhow, as you look over this wonderland you might see something strange. You might see a bee perched on a flower with its head jammed into the petals, as this small solitary species is. Bees do get drunk on pollen, but usually fall off flowers when this happens. What is it doing?
And then you might see something stranger than that. You might see a big drone fly, a species of hoverfly, doing a head-stand! How?
This is the same area of blossom two days in a row – clearly something is amiss, but what? We need to see the same petals without the yogic insects. Do you notice anything odd?
Have you noticed anything? Don’t worry if you haven’t, it’s not easy to see. But there is something hidden among the petals. In fact, you might actually be looking at it and thinking it is a petal. It is in fact our largest species of crab spider, the Flower Crab Spider. It’s an ambush specialist and to make sure it can’t be seen by its insect prey is can even change colour, but not to any colour. Just some. It doesn’t make a web, it just perches on a suitable flower and waits for an insect to come down to feed. Can you see it now in this next photo?
Okay, maybe you can see the spider now, but are finding it a little difficult to make out the details, so I’ll make it a little clearer. Check this out:
This is a female Flower Crab Spider. She is much larger than the male and has a smooth shiny body with bright yellow eyes. She can almost turn green but is usually bright white or bright yellow. These spiders get their name because they hold their long forelegs out like crabs claws. In fact, they generally stand on their four short back legs and hold out their four long front legs, and when they walk they scuttle sideways. The venom is not known to be harmful to humans, but it is so powerful to insects that it kills them instantly, preventing them from escaping the spider which has no web to aid it. The small male is very thin and coloured like bird-droppings, and will usually deliberately perch on bird droppings splashed on leaves. The female is not gigantic, but its cushion-like body can reach almost the width and length of a human thumbnail.
So now that you know what it is for sure, go back and look at those other photos and see if you can recognise the spider clearly among the petals. But the story doesn’t just end here…