I recently had an entertaining encounter with a Cicada
Killer, Sphecius speciosus, our largest native wasp. The females of this species construct burrows
in the soil into which they place a cicada to act as a food source for their
developing larvae. I typically begin to
see signs of burrowing activity around the first of August.
This individual provided me with some fine photo
opportunities. Using both corn leaves
and the ground as perches, a watchful male spent the morning in the garden on
the lookout for female Cicada Killers.
Several chases ensued, with one resulting in a pair of wasps in a love
embrace spiraling into the sky.
The video shows the wasp constantly scanning its
surroundings. Body twitches and wing
fluttering show its readiness to instantly take off after any passing female.
The Cicada Killer presents a fearsome image, but it is
actually not at all aggressive. Males
are incapable of stinging, so this guy is completely harmless. Females, which are capable of stinging, save
that sting for their preferred prey. A
person would have to work hard to make one of these wasps sting, and that sting
would be classified as justifiable self defense.
Female Cicada Killers build their burrows in areas of
exposed soil. Around here, they seem to prefer
my shallow soiled, south facing front lawn, which typically shows bare ground
in August as the lawn grasses enter summer dormancy.
This is my favorite wasp species. Many people have asked me how to get rid of
these wasps. I usually respond that the
wasps are not a problem, so people should enjoy them. When people say the wasp burrows are ruining
their lawns, I reply that it must have been a poor lawn to begin with,
otherwise the wasps would never have been attracted there. When they accuse the wasps of attacking, I
point out that a close fly-by does not constitute an attack. I’ve never had to respond to any comments
beyond that, because by that point, people have given up hope of getting any
really practical advice from me.
In this video, the wasp has just had a close encounter with
a passing Cicada Killer. His body
movements seem to display a heightened level of excitement.
Great stuff as always, Steve. The cicada killers are a Hymenopteran spectacle, that's for sure. Also, interesting birds on the soundtrack of your video: blue grosbeak, and Henslow's sparrow!
ReplyDeleteThanks, Jim. The blue grosbeak moves around and is not always heard near my vegetable garden. There are Henslow's sparrows defending territories on three sides of the garden and they are rarely all quiet at the same time.
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