Tiny, but able to attack prey up to three times its size this brightly coloured flower crab spider (Thomisus genus) waits on a nasturtium flower in our vegetable garden for potential victims.
Cryptically coloured, these tiny spiders are able to change their colour. The colour change takes up to two days and they can change from white to yellow or pink depending on the flower they are sitting on.
The crab spiders get their name from their sideways gait. They catch approaching insects using their relatively long first and second pairs of legs. Once a victim is caught, the spider kills it with a bite behind the head, injecting an enzyme that dissolves the victim’s insides so it can be sucked dry. Once done, the spider drops the empty but still intact exoskeleton of its prey.
Happily for the vegetable gardener, their food sources include aphids, red spider mites and thrips. As they are so tiny, these spiders can be dispersed on the wind. The brown male is even tinier than the yellow female in the photograph.
Thanks to Joan Young’s photo here, that enabled me to identify this spider. ★
Posted by Carol at letting nature back in
Sources: Biodiversity explorer http://www.biodiversityexplorer.org/thomisus.htm; South African Agricultural Research Council http://www.arc.agric.za/ Thomisidae-General-Information.aspx
Weekly photo challenge WPC: Tiny
June 9, 2017 at 1:51 am
I love nasturtium! I grow it and make pesto with it every summer.
LikeLiked by 1 person
June 9, 2017 at 7:18 am
I also love nasturtium. It has an old-fashioned cheerfulness. Using it in pesto sounds great.
LikeLiked by 1 person
December 25, 2016 at 8:19 am
Love spider crabs – especially the bright yellow
LikeLiked by 1 person
November 15, 2016 at 2:46 am
Cool! Never heard of this one. Nature sure did a job with it!!
LikeLike
November 15, 2016 at 12:09 pm
Tiny, but hugely interesting 🙂
LikeLike
November 14, 2016 at 5:42 am
Very interesting! I must look at my nasturtiums more closely in future.
LikeLiked by 1 person
November 14, 2016 at 5:22 am
An excellent ally for the vegetable gardener 😊 Nature’s balance is ever fascinating. I enjoy your informative posts.
LikeLike
November 14, 2016 at 12:58 pm
Thanks Liz. There is so much going on out there, most of which I don’t have any inkling of – and this tiny spider is another reminder that its best not to use toxic sprays.
LikeLike
November 13, 2016 at 8:46 pm
Perfect hiding spot!
LikeLike
November 14, 2016 at 12:56 pm
It would seem so unlikely for bright yellow to be the perfect disguise!
LikeLiked by 1 person
November 13, 2016 at 7:47 pm
Crab spiders are very interesting! I like them, as well as their prey. I’ve seen green and brownish ones too… and some that change to the color of Soldier Beetles during Soldier Beetle mating time!
LikeLike
November 14, 2016 at 12:53 pm
Yes, they are interesting. I had not known before that some crab spiders can change colour.
LikeLike