
In keeping with the flies, I thought I would share this photo of a Robberfly (Asilidae – Dioctriinae – Dioctria sp.) that we found and photographed at Shaw Nature Reserve this summer.
"What a thousand acres of Silphiums looked like when they tickled the bellies of the buffalo is a question never again to be answered, and perhaps not even asked." -Aldo Leopold

Tonight’s post all share a theme of the challenges of being a pollinator on prairie wildflowers. The first photo above shows a lovely-colored, ambush predator known as a Crab Spider. Crab Spiders do not spin webs, but lay in wait, often on a flower for a pollinator to visit.

This Assassin Bug has captured a syrphid fly and is having himself a meal.

In the image above, this goldenrod flower came to life to ambush a Honeybee. I find that Honeybees are the most often caught in traps like this. Native bees seem to be constantly on the move and much more defensive, most likely due to the fact that they are solitary and there would be nobody to care for the brood if they were more care free like the honeybees.

The creature is actually called an Ambush Bug. What an interesting face this one has! I can imagine the potential conversation.

Finally, this gigantic Robberfly is finishing off some small prey.

The skimmers (Family Libellulidae) are the largest family of the Odonata and contain some of the most widely known and conspicuous dragonflies.

Much like a flycatcher within the world of birds, the skimmers typically sit and wait on a perch and fly to catch an insect.

These photographs were taken at a small pond at Shaw Nature Reserve this summer.

-OZB

The Lacewing (order Neuroptera, roughly translated to “nerve-wings”) insects are important predators of economic pests. Lacewing larvae are voracious predators that prey upon soft-bodied arthropods such as aphids, scale and whitefly. I have not yet been able to photograph one of these killer larvae yet, and that may be due to their tendency to cover themselves in pieces of trash (including parts of their victims) they find in their environment as camouflage. Another interesting bit of information about these insects is how their eggs are deposited. The photograph below shows the eggs deposited on long thread-like stalks, which have been hypothesized to be deterrents to not only predation, but cannibalism as the larvae hatch and immediately begin to look for something to eat.

OZB

The Redbud Bruchid (Gibbobruchis mimus), as its name suggests, is one of those perfect examples of insect-plant specialization. The larvae of this species will only grow on the seeds of Redbud trees and perhaps on those of a relative or two.

Being extremely small (2.5 – 3 mm), these cute guys are quite the challenge to photograph. Adults feed on plant tissues (flower petals, pollen, nectar, etc…) and I typically have seen them feeding on my Echinacea flowers.

The guy above can be seen creating or adding to a hole in a flower petal. I much prefer them to the exotic invasive Japanese Beetles that tend to leave nothing behind.

The Bruchids are a subfamily or “tribe” found within the quite large family – the Chrysomelidae, known as “Leaf Beetles”.

If you know the size of an individual blossom of the Common Milkweed (Asclepias syriaca), the image above will give you a good idea on just how small these little guys are.
Thanks for stopping by.
OZB

Even with a couple great guides, I still am having troubles identifying the Bumble Bees. Getting the right image makes a big difference and I need to remember to take photos from multiple angles in order to get sure IDs. Missouri is home to ten species of bumblebee and I imagine identification will get easier with practice.

The native wildflowers in my yard are huge attractants for all bees, and especially bumblebees. The long-tongued bumblebees and honeybees cover the Echinacea and Silphium in the garden, while the smaller, shorter tongued species are mostly attracted to the Rudbeckia.


Thanks for stopping by!
OZB