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Blog Archives
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
Posted in Featured Photos
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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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Chalcid Wasp
5mm long | July 12, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
This is the first time I can recall encountering one of these wasps in the field. Chalcid wasps are easily recognized by their enlarged hind femora.
If you missed the one that emerged from a chrysalis I collected, check out this earlier post.
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Parasitic Wasp Cocoon
6mm long | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
These attractively patterned little cocoons seem to be a common sight no matter where I travel. Each one holds the pupa of a parasitic wasp. I’ll often find what’s left of a caterpillar host nearby. The ones I notice are usually suspended by a thread, as here. That’s not always the case though.
Posted in Featured Photos
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Mesmerizing Mantispid
Don’t stare at the eyes too long; you might fall under its spell.
January 7, 2012 | Tupaciguara, Minas Gerais, Brazil
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Phorid Fly Attempting to Oviposit on a Leafcutter Ant
Leafcutter ants are a common sight in the Brazilian cerrado. I admit to being apathetic when it comes to photographing them. In order for me to turn my lens on them, something unusual generally has to be happening. In this case, I first noticed something odd occurring around one of the nest entrances. Looking closer, I could see the ants were being attacked by a small fly. I had read about that, but had never seen it personally. Intrigued, I figured I’d spend a few minutes shooting, even though I fully expected to end up with nothing usable. I was pleasantly surprised that one of the images managed to get both an ant and the fly in focus.
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Assassin Bug
July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
This assassin bug mimics a bee quite well. It even seems to have pollen baskets on its hind legs.
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Parasitoid Wasp Emerging
July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
Each one of these eggs from the underside of a leaf was parasitized by a wasp. Â Their barrel shape with round fringed caps suggests they might be stink bug eggs. Had a stink bug nymph emerged, the caps would have been neatly opened. Instead, they each have a roundish hole chewed in them. In fact, there’s a parasitoid wasp straggler chewing its way free from the rightmost egg.
I might be seeing things, but you can almost make out the wasp’s body through the transparent egg shell.
View from the other side
I didn’t notice at the time, but a mite came along.
Posted in Easter Eggs, Featured Photos
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Ant Mimicking Spider and Possible Model
July 8, 2011 | Victorio Siqueroli Park
Uberlandia, Minas Gerais, Brazil
These two photos of critters both 4mm long were taken less than an hour apart in spots just a few feet apart. I believe these two are probably a mimic and its model.
I first photographed the jumping spider. I only got a few shots before I lost it. Later I spotted the ant and took quite a few photos. Here I selected one that would show roughly the same pose as the spider.
The area around the rearmost eyes of the jumping spider is darkened to better match the larger black eyes of the ant. The dark spots on the spider’s abdomen are an anomaly though. Maybe this ant isn’t the model after all?
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Delphacid With Unusual Antennae
5mm long body | July 8, 2011 | Victorio Siqueroli Park, Uberlandia, Minas Gerais, Brazil
Those are some weird looking antennae for a planthopper. After a bit of research, I determined that this member of the family Delphacidae belongs in the genus Copicerus. There are at least three species in Brazil according to this page. One of those species, Copicerus irroratus, ranges into temperate North America.
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