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Author Archives: Troy Bartlett
Shield Bug, Taking Flight
22mm long | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
This shield bug caught caught my eye mostly based on its relatively large size. What made the pursuit worthwhile though was accidentally catching it as it took flight. I enjoy getting to see some parts of the anatomy that are generally hidden.
Wings outstretched
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Foraging Turtle Ants
4mm long | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
I spotted these turtle ants (Cephalotes sp.) crawling around on vegetation, occasionally stopping to solicit honeydew from scale insects. I’ve been somewhat enamored with these ants ever since seeing some of Alex Wild’s photos, particular the specialized nest guarding soldiers. Sadly, despite watching the workers, I’ve yet to successfully find a nest for an opportunity to photograph one.
I’ll have to satisfy myself with the foragers for now.
Dorsal view
Here’s another one taking honeydew from a scale insect.
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Scale Insects
5mm long | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
I probably wouldn’t have noticed these scale insects were it not for the ants that would occasionally stop to feed from them.
Its difficult to see in the first photo, but each one has 20 or so waxy threads spiraling away from the body. It’s not clear to me where exactly they’re coming from. The threads are a bit easier to see in the next few photos.
Waxy corkscrew shaped filaments radiate out from the body
I wonder if the spirals don’t help the ants to locate the scale.
The scales excrete honeydew from a small orange tube (to the left above, right below).
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Jumping Spider with Hooked Chelicerae
5mm body | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
This attractive male jumping spider has some interesting hooks on his chelicerae. Take a closer look at this crop from the image above.
Hooked chelicerae
He really has a lot going on colorwise as well. I imagine those banded front legs might be used in some sort of courtship ritual. One has to wonder if and when those hooks come into play though.
Dorsal view
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Micromoth
July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
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Micromoth
8mm long | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
Side view
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Caterpillar
13mm long | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
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Barklice
9mm long | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
Because they are gregarious, one rarely sees a lone barklouse. I was surprised to find this one by itself on a leaf. There might have been a group nearby, but I didn’t find them.
Elsewhere in the park though, I did find an aggregation.
Barklice on the side of a tree
Closer view
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Mystery Egg Mass
25mm long | July 12, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
What looks a bit like peanut brittle is presumably an egg mass. I found this on lichen covered bark at the base of a tree. Overall it was about 25mm long, which would make each of the embedded eggs less than 2mm long.
Side view
Each egg appears to be elliptical, with a sort of knob at the exposed end.
Closeup
I don’t have a clue what is responsible for this, so I’d love to see comments from anyone that might have an idea. I’ve been through the “Eggs and Egg Cases” chapter of Tracks & Sign of Insects a few times already, but I haven’t spotted any likely suspects.
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Leaf-mining Leaf Beetle
8mm long | July 12, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
This attractive little beetle was resting when I found it. Looking at it here, it almost appears to be nature’s idea of a gaudy holiday light display. Just imagine each of those elytral punctures as a tiny LED, and then imagine them programmed so that the dorsal patterns shift down the eltytra, one puncture at a time. Jokes aside, it actually blends in pretty well with the browning foliage.
This is a leaf-mining leaf beetle, so called because the larvae feed between the surfaces of leaves, creating mines. Adults feed on foliage, and it may be responsible for some of the leaf damage visible here, though I didn’t actually see it eating.
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