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Ulster Star
18/0/02 |
Ritual that brought the sting of death
THE wasp attacked the fly with unusual vigour, and
unusual ferocity. The fly was very surprised, but the wasp had just
passed a death sentence on him and he did not have too long to be
surprised.
I never did get a good look at the fly so could not
identify it. The wasp was a common wasp.
When a bee stings he injects his barbed sting into
you, the sting catches on the skin, the barb does not allow it to come
out, and the bee has lost his one and only sting.
The sting is situated at the end of the abdomen and
not only does she lose her sting, she also loses the tip of the
abdomen. She dies shortly afterwards.
Not so the wasp. Her, sting is unbarbed and if she
does not like you she can sting you, withdraw her sting, and live to
sting another day. This is of great assistance if you use your sting
to kill insects for food.
The queen bee is also a creature with an unbarbed
sting. They tend only to sting other queens, a practice which has been
described as 'survival of the fittest'. There seems to be a violence
culture in these delightful little creatures.
The wasp attacked the fly in mid-flight and held on
tightly. I then became aware of the action and watched as the fly, in
the deadly embrace of the wasp, slowly sailed down to the ground.
For some reason which I do not understand the wasp
then proceeded to tear off one of the fly's wings. To disable it,
perhaps.
The fly seemed alive at this stage, for I thought I
detected movement.
The sun shone, the earth revolved, the wasp carried on
with his deadly business, and then an ant appeared on the scene. Quite
unafraid, for he saw that the wasp was busy, he approached close and
grabbed the wing in his mouth.
Now this ant was one of our common species, the red
ant, the sort that you might come across if you upturn a large stone
in summer.
You may well find a number of adults and eggs, and
much frantic to-ing and fro-ing, as the adults seek safety, frequently
with an egg in the mouth.
The ant tried to turn with the wing in its mouth,
presumably to head back to where he had come from.
The wing was light, but it was much larger than the
ant, and even though no wind blew the ant could not make headway with
the wing.
There were flat surfaces and' some small plants in the
vicinity, and while other nearby ants had no problems moving around,
the ant with the large wing was tharwted.
He dropped the wing, then grasped it another way,
tried to make off. Again he was frustrated as the wing was either
caught on the ground or on local growth.
By this time the ant was probably thinking of a nice
aphid, and dinner, and cursing his misfortune in coming across a wasp
attacking a fly. No more wings for me, he was probably saying.
It is believed that all ants 'milk' aphids, and some
even form a symbiotic relationship.
The common blue butterfly in the south of England had
an 'arrangement' with wild thyme and a species of ant.
When the butterfly laid eggs, and the eggs became
caterpillars, the ants carried them off and fed them on baby ants. In
return the ants stroked the caterpillars and they produced a sweet
bodily secretion which the ants thrived on.
So now the wasp attacked the other wing and pulled it
off. And again, the reason for this behaviour seemed obscure.
The ant thought this was a good thing, for he dropped
the first wing and dashed in to grab the second.
But the troubles were as before, for no matter which
way he moved, no matter which way he grasped the wing, he could not
get it to move any distance.
Meanwhile the wasp was becoming more mobile. He knew
his dinner was dead, he knew he had got rid of the wings, and suddenly
felt more mobile. He seemed to eat part of the fly, then another small
part of the fly fell off. The ant stopped his efforts with the wing,
dashed in yet again, and this time grabbed the small piece of fly and
galloped off. Much easier than an old wing, he seemed to be saying.
The wasp, who must have young at home in the hive, now
realised the kids must be getting hungry. So she did a perfect
lift-off, headed into the sky, and back to the kids.
With our unpredictable weather, who can say when the
wasps will move from flesh to the sweetness of fallen apples, or
sugar, or jam. But some day soon the wasp will not have to attack
flying flies.
Coming Events
Each Saturday and Sunday in August - Guided tours at Castle
Espie, 2.30, details from 9187 4146
Each day in August - Pondamonium, finding out
about our water creatures, far example the creatures which feed the
ducks at Castle Espie, who will tell you more ifyou phone 9187 4146.
Each Sunday in August - Boat trip from Maghary
Country Park to Coney Island, 2pm, 3pm, 4pm, phone Oxford Island on
3832 2205.
Monday 12 to Friday 16 August - Monday 19 to Friday
23 August - Children's Wildlife Summer School, Oxford Island,
2.30, sounds good, call 3832 2205.
Sunday 18 August - Have a look for grayling,
silver-washed and dark green fritillaries, at 10.30, Belfast-Hills,
starting Belfast Castle car park. Contact Butterfly Conservation on
9077 5317
Thursday 29 August - Birdwatch Morning at
Castle Espie, at 10.30, details from 9187 4146.
Bat night at Colin Glen Forest Park, 9pm, details from 90614115
Saturday 31 August - Butterfly search in east
Antrim, at 10.,30; on lookout for blue, copper, peacock, fritillary.
Contact Butterfly Conservation, 9335 5565
