urbpan: (dandelion)
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This is the door of a kiosk that rents audiotours. The staff person working inside complained of flies and other insects bugging here when she passed through the door. This is the south-facing wall of a sheet metal shack, essentially, so it was soaking up all the morning sun and the insects were congregating on it. I hung up two sticky traps on the kiosk--I find that doing ANYthing is better internal customer service than lecturing the coworker that they are worried about nothing. By the next morning, both sticky traps were completely covered in carrion flies and yellow jackets. The staff person was quite pleased.
urbpan: (dandelion)
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If you find your mousetraps in the morning stripped of the bait with no mouse caught, try hot gluing solid bait. Normally I use peanut butter, but invertebrates such as insects and slugs can clean off the bait pedal without setting the trap off. I read a paper suggesting that you hot glue an almond to the bait pedal--this has had some success, but ants and some other creatures can eat the almond. In this case there were mice eating duck pellets, so I hot glued a parrot pellet (basically the same ingredients, just bigger) to the traps. So far we've caught 3 mice this way.
urbpan: (dandelion)
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I went over my chemical use records and ascertained that this was the 23rd wasp nest I'd destroyed using insecticide. This was another bald faced hornet nest, right next to a statue of a gorilla that kids love to climb all over.
urbpan: (dandelion)
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I used my workout app to track my pest control duty at Stone Zoo the other day. I was treating the catch basins--the parts of the storm drains that hold water--with mosquito larvacide. I believe I posted about this a few years and someone, probably [livejournal.com profile] calypso72 because she's very smart, suggested I use GPS technology to keep track of all of them. At the time, the technology or perhaps my faith in it, was lacking. Now I think it is possible to make a storm drain map of both zoos using this technology.
urbpan: (dandelion)
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While trimming some of the viburnum shrubs in the zoo, one of our horticulture department staff found these two large nests. The top one is belongs to aerial yellowjackets (probably Dolichovespula arenaria) and was discovered right above a pathway through the Children's Zoo. When I took it down I noticed that they had already started producing next year's queens.

The second one belongs to bald faced hornets Dolichovespula maculata, which are also yellowjackets (notice they are in the same genus) but are black and white instead of black and yellow. They are also much larger than most species of yellowjacket. I generally leave them alone since they are not as aggressive as some other species, and are beneficial predators of other insects. Some sources say they'll even prey on other yellowjacket species. Unfortunately this nest was discovered right over a picnic/special event area, so I took it down.
urbpan: (dandelion)
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There. That's 52 catch basins treated for mosquito larvae.

Sentry

Aug. 2nd, 2014 09:38 am
urbpan: (dandelion)
 photo IMG_7009_zpsba0d961c.jpg
A yellow jacket worker guards the entrance to a subterranean nest.

Tough call

Aug. 1st, 2014 10:16 pm
urbpan: (dandelion)
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urbpan: (dandelion)
 photo IMG_6743_zps060ef84c.jpg
I'm trying to photograph every wasp nest I encounter at work this summer. These are European paper wasps, not usually very aggressive. In this case they had built a nest in the open end of a chain link fence pipe, very close to an animal exhibit. Several people were stung probably after resting their hands on the pipe without looking.
urbpan: (dandelion)
 photo IMG_6735_zps91f5ddef.jpg
I got a radio call early Monday morning that there was a "yellow jacket issue at the Organic Garden Shed." I grabbed my can of Wasp Freeze and hopped on the bike to go check it out. When I got there, there were no yellow jackets anywhere, but there were several large bees flying around. I caught one with an insect net and tossed it in the fridge, to slow it down so that I could identify it.

I'm reasonably certain that this is a male Megachile sculpturalis, or giant resin bee. This species is a relatively recent introduction from Asia. The males engage in aggressive posturing at potential nest sites--mainly empty carpenter bee nests. What my coworker mistook for a dangerous situation involving scary wasps turned out to be a big show being put on by male bees who are completely stingless.

 photo IMG_6741_zps0615e662.jpg
As it turned out, later in the day I found the same kind of bee near the concessions area, staking out a hole in a fencepost. I knew this was completely harmless, but that it would result in a lot of frayed nerves from people trying to pass by to get chicken fingers. I jammed a couple sticks in the hole to make it a less attractive nest site.

Dragons

Jul. 12th, 2014 08:08 pm
urbpan: (dandelion)
 photo IMG_6696_zps3165a1f5.jpg
Stone Zoo has an American alligator exhibit open for the summer! There are three medium sized gators in there; keepers go in teams to clean it, with one zookeeper in charge of making sure the animals keep their distance.

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I was at Stone Zoo to (among other things) set up stable fly traps. This dragonfly unwisely landed on my pile of sticky sleeves--fortunately the backings are still on them, so the odonate was not trapped.
urbpan: (dandelion)
 photo IMG_6669_zps895397c6.jpg
It's high time that I immortalized the look I have on my face when I'm staring at my phone--everyone else gets to see it all the time.

and then another one )
urbpan: (dandelion)
 photo IMG_6546_zpsde8727d9.jpg
I carry my camera around with me at work to document field work that I'll need to prioritize. First thing Monday AM I should probably deal with this bald-faced hornet nest, built on an air conditioner right by a door.
urbpan: (dandelion)
 photo IMG_6439_zps58d12e02.jpg

Much of the day's work was generating this huge stack of MSDS sheets. ("Material Safety Data Sheet" sheets)

Big black

Jun. 17th, 2014 06:31 pm
urbpan: (dandelion)
 photo IMG_6416_zpsffa312c1.jpg

If someone says they have "big black ants" it's almost always Camponotus pennsylvanicus. These carpenter ants are the largest and most common wood-damaging ants in North America. The main nest is in the dead wood of a living or standing dead tree. Workers take some of the larvae with them to create satellite colonies in other trees, or in the water-damaged wood of a house or other human-built structure.

The adults are unable to eat solid food, so they feed solid food to the larvae who regurgitate liquid that the adults can consume. In this case (and in at least one other case I've dealt with) the food source was live crickets being kept to feed zoo animals. The carpenter ant workers use their powerful mandibles to chop up the helpless microlivestock into small bits.

The long-term fix for a carpenter ant problem is a carpenter. Remove all the water-damaged (fungus-infected) wood and replace it with dry wood, and the ants won't be able to live there.
urbpan: (dandelion)
 photo IMG_6368_zpsd0407fea.jpg

European paper wasp nest, Franklin Park. These wasps can usually be tolerated, since they feed exclusively on other insects (and not on trash, like yellow jackets do). Unfortunately they often build their nests on man-made structures—I removed this one from a storage shed.
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