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Nature Observations August 2021 Observations

Algonquin Observations, Part 5 – Spruce Bog: The Reckoning

The temperature was up, the sun was out, and with it the invertebrates were active and visible. I arrived at the Spruce Bog Boardwalk Trail with my macro lens equipped, and I used it quite extensively.

At the beginning and near the end of the trail, I took pictures of Hooded-Owlets (Cuculia), which are not baby owls with their faces obscured, but instead the name for a genus of moths (these moths have some crazy names. One of the species I observed is similar to a moth that goes by the common name “Asteroid Moth”… I have no idea why…). The first was a brightly striped caterpillar of the Brown Hooded-owlet (Cuculia convexipennis).

Brown Hooded-Owlet Caterpillar.

Near the end of the trail I found another Hooded-Owlet, and I’m not so sure on the identification for this one, but it was much less colourful than the first.

Unidentified Hooded-Owlet (Cucullia sp.).

Landing briefly on a flower was a Tachinid Fly in the Genus Phasia. Tachinids are fascinating Flies and incredibly diverse. This is what Stephen Marshall has to say about them in his incredible book about Flies: “The Tachinidae is in many ways the ultimate fly family. With almost 10 000 named species and thousands more awaiting description, this ubiquitous group… exhibits an unparalleled variety of sizes, shapes and colors. The range of life history strategies is equally amazing, at least within the constraint that every known species in the group is a parasitoid that develops inside another insect… or related arthropod.” (from Marshall 2012, p 386). Phasia tachinids are parasitoids of True Bugs in the families Pentatomidae and Pyrrhocoridae (Marshall 2012).

Phasia Tachinid Fly perching on a flower, possibly P. auralans?

Another flower was visited by a wasp of the Ectemnius genus. These wasps are part of a group of wasps called the “Square-headed wasps” (Subfamiily Crabroninae) and I think you can see that characterization borne out here. I certainly noticed its huge head right away while taking the pictures. Members of the genus Ectemnius hunt mostly adult Flies (Diptera) which they store in their nests for their larvae to feed on. Some species of Ectemnius wasps nest in soil, while others nest in rotten wood (O’Neill 2001).

Ectemnius wasp, visiting a flower.

Visiting flowers for nectar is a common activity for many groups of flying insects. This fact has been exploited by predators, and I spotted one of these on a flower nearby: a Jagged Ambush Bug (Phymata) lying in wait with raptorial (that is, grasping) front legs at the ready to nab unwary pollinators.

Ambush Bug lying in Ambush. Look at that incredible profile.

I spotted some mating grasshoppers on a leaf, which were otherwise engaged and allowed me to take some decent photos. If you know something about Orthopterans (members of the Order Orthoptera, which includes Katydids, Grasshoppers, and Crickets) you might know that unlike butterflies and moths (Order Lepidoptera) and many other insect groups which have very distinct larval forms, young stages of grasshoppers appear the same as adults except for the absence of wings. This photo might be confusing then… since these grasshoppers are clearly mating (a strictly adult activity) and they clearly don’t have wings (a characteristic of larvae). The problem is solved when you find out that the species is called the Wingless Mountain Grasshopper (Booneacris glacialis). Although possessing wings as adults is a characteristic of all major insect groups, there are members of all groups which have later (as in evolutionarily later) lost the wings. 

Mating Wingless Mountain Grasshoppers.

Within the sparse woods of the Black Spruce Trees, I found a caterpillar of the Datana genus. These caterpillars stick together in their younger stages, and separate when they are in their final larval stage before adulthood (Marshall 2006).

Datana Caterpillar, likely in its final larval stage because it was alone.

Growing out of the side of the railing on this part of the boardwalk trail was the beautiful branching form of a Beard Lichen (Usnea). Lichens are truly the Corals of the terrestrial realm: they have similar appearances and colours (some are green, brown, orange etc), but they also consist of a partnership* between two very different forms of life. Corals consist of an animal and algae living together and Lichens consist of fungi and algae. 

*this is of course a very simple way of describing the relationship between a lichen fungus and a lichen alga. In fact, there can be many variations on the degree of partnership, with many relationships resembling parasitism rather than traditional ‘symbiosis’.

Usnea Beard Lichen growing out of a bridge railing. If this picture had enough blue tint, you might believe it was a photo of a coral attached to a shipwreck.

Once past the railing I came upon the wildflower meadow, which housed an appropriate medley of visiting Insects. Hymenoptera were present in abundance. A Yellow-Banded Bumble Bee (Bombus terricola) busily moved from flower to flower, thrumming through the air. Bumblebees amaze me, and they almost seem like they shouldn’t be able to fly with their stout fuzzy bodies but they fly quite well enough for their purposes.

Yellow-Banded Bumblebee.

A brief appearance by a member of the Sand Wasps (Bembicidae) was an exciting find (have to continue the Sand Wasp series some time, I’ve only done the Introduction and one tribe!). The Sand Wasp I observed in Algonquin is possibly a member of the genus Gorytes. Species in this genus fill their nests with True Bugs, mostly Hoppers (members of the families Cercopidae, Cidadellidae, and Membracidae) (Evans and O’Neill 2007).

Sand Wasp, possibly a Gorytes.

The Spider Wasp Episyron was a very distinct Hymenopteran. Although it sort of has a squat appearance somewhat reminiscent of Spiders, the name “Spider Wasp” comes from the fact that these wasps (members of the Family Pompilidae) hunt Spiders which they feed to their young. Species in the genus Episyron hunt specifically Orb-weaver Spiders (Araneidae) (O’Neill 2001).

Episyron Spider Wasp.

Flower Flies (Syrphidae) were of course frequently seen visiting the flowers. Frustratingly, a new one to me was elusive enough that I didn’t manage to get a very good picture of it. This was the largest Flower Fly I’ve ever seen (though not large in most terms, probably about honeybee size) a member of the Genus Sphaerophoria.

Sphaerophoria Flower Fly.

Not as common, and certainly not as associated with flowers were a couple of Beetle species I observed visiting the flowers. One was a click beetle (Elateridae), possibly of the genus Dalopius. Apparently click beetles aren’t usually desirable flower visitors as they are often feeding on the flowers and pollen themselves (as opposed to the nectar), and don’t contribute to pollination very often (Willmer 2011). Dalopius feeds on other Insects, so perhaps it’s hunting among the flowers for prey, and/or snacking on pollen in the meantime (Marshall 2006).

Click Beetle (Dalopius sp.?) among the flowers, possibly eating pollen, possibly hunting prey.

By contrast, the other flower-visiting beetle that I observed was part of the Family Cerambycidae (the longhorn beetles), which is a group that includes important and frequent pollinators (Willmer 2011). The Red-shouldered Pine Borer (Stictoleptura canadensis) is part of the aptly named subfamily Lepturinae (the flower longhorns) within Cerambycidae.

Red-shouldered Pine Borer, a Flower Longhorn Beetle.

One wildflower that caught my attention as I was continuing down the trail was a small purple flower with strangely square-shaped petals. The flower was a Common Selfheal (Prunella vulgaris). As you can guess from the common name, this flower was used in the past to cure many different illnesses, particularly of the mouth and throat because of the flower’s resemblance to a yawning mouth (Wernert 1982)… because that’s how things were supposed to work…

Leaving behind the multitude of flowers and insects of the wildflower meadow area, I was arrested by the sight of a peculiar tiny insect: a Barklouse (Order Psocoptera). As Marshall writes in his excellent overview of Insects “One doesn’t hear much about barklice.” (Marshall 2006). Indeed, though this individual is beautifully patterned and distinctive (I believe it’s Metylophorus novaescotiae) I can find little information about this creature. If my identification is correct, I can say that this species lives on shrub and tree branches (Mockford 1993), and presumably feeds on lichen there. Most members of the Order Psocoptera produce silk out of their mouths (specifically, labial glands), and some use this to cover their eggs, while others use the silk to construct shelters for themselves or others (!). There’s a tropical group called the Archipsocidae which can create silken shelters that “enshroud entire trees”, and in which there is some form of sociality (Costa 2006). I would love to learn more about these amazing insects.

Barklouse (possibly Metylophorus novaescotiae).

The final observation of my hike forced me to switch back to my telephoto lens. I actually thought for a second I was seeing a bird zooming back and forth above the path because of the size of the animal, but it was in fact an insect, and more specifically a Variable Darner Dragonfly (Aeshna interrupta). These Dragonflies are among the more acid-tolerant of Ontario Odonates so it makes sense that this individual could have developed as a larva within the acidic waters of the Spruce Bog (Pollard and Berrill, 1992). This amazing dragonfly (possibly about 15 cm long) was my last observation on the Spruce Bog trail and an excellent contrast to the diminutive (less than a cm long) barklouse, demonstrating once again the incredible diversity of the Insects.

Variable Darner Dragonfly at rest, after foraging across the trail.

References:

Costa, James. 2006. The Other Insect Societies.

Evans, Howard and O’Neill, Kevin. 2007. The Sand Wasps: Natural History and Behavior.

Marshall, Stephen. 2012. Flies: The Natural History and Diversity of Diptera.

Marshall, Stephen. 2006. Insects: Their Natural History and Diversity.

O’Neill, Kevin. 2001. Solitary Wasps: Behavior and Natural History.

Pollard, J. B., and Berrill, M. 1992. The distribution of dragonfly nymphs across a pH gradient in south-central Ontario lakes. Canadian Journal of Zoology https://doi.org/10.1139/z92-125

Wernert, Susan. 1982. Reader’s Digest North American Wildlife.

Willmer, Pat. 2011. Pollination and Floral Ecology.

And with that, I have finally completed my five-part journey through my 2021 Algonquin Observations series. What’s next for the Norfolk Naturalist? More nature observations, this time in Norfolk County itself (a fungi-spotting hike in Backus Woods with the Norfolk Field Naturalists), and a Podcast Review. Also, I attended Tetzoomcon 2021 this past weekend and it was awesome! A detailed post about the event will follow hopefully soon…

For previous Algonquin Observations (2021), see:

Part 1: Pog Lake Campground

Part 2: Opeongo Road

Part 3: Peck Lake Trail

Part 4: Spruce Bog Speedrun and the Logging Museum Trail

For Other Nature Observations in Algonquin Park, see:

-Algonquin Observations (July 2018), Day One, Two, Three, Four, Five, Six

And if you’re interested in seeing more of my photos and learning some facts about the organisms I’ve observed, follow me on Instagram at norfolknaturalist.

Categories
June 2021 Observations Nature Observations

Leafhoppers, Lepidopterans and Longhorns

Common visitors to my backyard (and probably any backyard with any sort of plant life) are leafhoppers (Cercopidae) and I’ve become familiar over the years with a few of my regular visiting genera. This past month I managed to get a really clear picture of Draeculacephala, with its distinctively pointed head.

Draeculacephala Leafhopper.

And this Latalus leafhopper kept flicking its wings around, similar to the Sepsid Flies I’ve seen flashing wings in the sun. Not sure if it was display behaviour of some kind or if it was trying to rid itself of some nuisance. The wing-flicking was very rapid, I’ve never seen a Leafhopper doing this before.

Latalus Leafhopper.

Similar to the Leafhoppers are the aptly named Froghoppers (Cercopoidea). I’m pretty sure this is one of them or at least a related family, based on its very toad-like appearance.

Froghopper/Spittlebug of some sort.

Other common Insect visitors to my backyard are Lepidoptera (Butterflies and Moths). Skipper Butterflies (Family Hesperiidae) are some of the most common Butterflies around in my experience. They’re skittish and difficult to get close to because they’re seemingly always on the move, but I’ve had some good luck with a few in the past. Last month I was able to catch this Peck’s Skipper (Polites peckius) in a moment of rest with my Macro lens.

Peck’s Skipper momentarily at rest in my backyard.

A much stranger Lepidopteran visitor was this bizarre Moth. Its wings look like a rolled up carpet, and its antennae look like tassels of said carpet. I’ve seen this same individual or at least a similar one in several different places around my yard, but always in this head down, wings up position. These Moths are classified as Crambidae (a Family) or Crambinae (a Subfamily) depending on the scheme being followed. There are thousands of species of Snout Moths (which is what these Moths are called), and I’m not sure where to begin on identifying my backyard variety.

Snout Moth in my backyard.

We have a patch of Milkweed growing in our backyard, and I check it on a regular basis for signs of Monarch Butterfly activity. (there should be adults flying up North here during June and beginning to lay eggs). I still haven’t spotted any eggs or caterpillars on the Milkweed plants (when I wrote these observations in June, wait for the July Observations…), but several other creatures have been evident among them. One morning, at the top of each Milkweed plant there were young earwigs. I guess they were just resting there? 

Earwig (I believe the European Earwig (Forficula auricularia)) exposed in its place among the top leaves of Milkweed.

One creature that I have nowhere to begin with is this strange object… I feel like I’ve seen it before and found an ID for it, but I can’t recall what the ID was. I believe it’s some sort of insect (maybe a pupa?), but I don’t know:

Mysterious seed-like object on a Milkweed leaf.

Wandering about on the Milkweed leaves were what I like to call “Reverse Lady Beetles” because the typical Ladybug in my head is one that’s orange/red with black spots, where these Beetles were the opposite. I didn’t get great pictures of them yet (they’re smaller than the more common introduced Asian Lady Beetles (Harmonia axyridis)), but you can see what I mean.

“Reverse” Lady Beetle under the leaf of a Milkweed.

I’m pretty sure these Lady Beetles are in the Genus Brachyacantha. At least one of the species in the Genus feeds on Hemiptera (mealybugs/aphids) in ant nests during its larval stage (presumably species that the ants are protecting for their honeydew secretions!) (Marshall, 2018).

A long-jawed Orbweaver (Tetragnatha) took up residence among the Milkweed as well, with a web that spanned between the leaves.

Long-Jawed Orbweaver Spider on its web.

One final visitor of note was this Banded Longhorn Beetle (Typocerus velutinis). These Beetles develop as larvae inside decaying trees or logs, emerging as the beautiful Beetle seen here hanging beneath a leaf.

Banded Longhorn Beetle hanging beneath a leaf.

References:

Marshall, Stephen 2018. Beetles: The Natural History and Diversity of Coleoptera.

For other June 2021 Observations, see:

Cuckoo Wasps and Carpenter Bees

Flies Falling to Fungi and Other Dipteran Observations

Fuzzy Flies and Song Sparrows

The Wonders of Wrens

A Visit to Big Creek, Part 1

A Visit to Big Creek, Part 2

For more nature observations, photos and natural history facts, follow me on instagram at norfolknaturalist