22. heinäkuuta 2021

campanula in Manitoba - state of play and incoming realignment

So here's the state of play for Campanula in Manitoba at the time of posting according to VasCan...

Native to Manitoba...

Campanula petiolata (no common name assigned as yet :) )
found in Yukon, NWT, Nunavut, British Columbia, Alberta, Saskatchewan, Manitoba

Campanula gieseckeana Giesecke's bellflower
found in NWT, Nunavut, Manitoba, Ontario, Quebec, Newfoundland and Labrador

Introduced in Manitoba...

Campanula rapunculoides

Campanula glomerata Subspecies Campanula glomerata subsp. glomerata

Campanula trachelium Subspecies Campanula trachelium subsp. trachelium

Excluded from the flora of Manitoba (and every other part of Canada)...

Campanula rotundifolia

What was that you said?

now this is a bit of a upheaval as for many many years we have become accustomed to identifying our local native harebell as C. rotunidifolia and it can be a bit of a shock to find the name has been whisked away from us to only apply to the plants native to Europe.

so if our native harebell is not C. rotundifolia then what is it.....

well for most of southern Manitoba I expect the answer is going to be C. petiolata

here's the entry from Scoggans Flora of Manitoba 1957 (p 507) and you can see what I mean...

3. C. rotundifolia L. (incl. the intergrading var intercedens (Witasek) Farw. and var. petiolata (A. DC.) Henry (C. petiolata A. DC.))
Prairie, sandhills, rock outcrops, and clearings in the southern three-quarters of the province. Northernmost collection: Nelson River at Limestone Rapids about 155 miles south of Churchill; railway clearing....

C. intercedens proper is currently absent from Manitoba on VasCan being found in Ontario, Quebec and the Maritimes (excluding Newfoundland and Labrador)

C. giesekiana - the slice of C rotundifolia complex that we thought we might be getting is really a plant of the Arctic - here's a discussion of this plant from the online Flora of the Canadian Arctic Archipelago. So plants in the northern quarter of the province are likely to be this species.

So I will be moving my identifications of C rotundifolia complex in Manitoba to align with this way of thinking - ymmv :)

PS For those of you wondering what happened to Marsh Bell flower -
Palustricodon aparinoides var. aparinoides is the new name of Campanula aparinoides Pursh

Lähetetty 22. heinäkuuta 2021 18:57 käyttäjältä marykrieger marykrieger | 2 kommenttia | Jätä kommentti

16. heinäkuuta 2021

12. heinäkuuta 2021

National Moth Week - what might we find in Manitoba this year

here's where we are with lepidoptera in Manitoba observed in July as of July 12, 2021...

3,389 observations of 505 species by 530 observers supported by 389 identifiers

and the top ten moth species observed in July in Manitoba to date

name most frequently observed as # of observations
Elm Spanworm Moth Ennomos subsignaria adult 83
White-marked Tussock Moth Orgyia leucostigma larva 55
Abbott's Sphinx Sphecodina abbottii larva 55
Forest Tent Caterpillar Moth Malacosoma disstria adult 24
Virginia Ctenucha Moth Ctenucha virginica adult 24
Glassy Cutworm Moth Apamea devastator adult 24
Virgin Tiger Moth Apantesis virgo adult 19
Polyphemus Moth Antheraea polyphemus adult 19
Leafy Spurge Hawkmoth Hyles euphorbiae larva 19
Four-spotted Ghost Moth Sthenopis purpurascens adult 19

Lähetetty 12. heinäkuuta 2021 13:42 käyttäjältä marykrieger marykrieger | 1 havainto | 0 kommenttia | Jätä kommentti

Harvester - Feniseca tarquinius; a butterfly with an interesting approach to life

A recent outing near Molson netted a enjoyable group of butterfly observations including a cooperative group of Harvester butterflies.

Checking my copy of The Butterflies of Manitoba, I found these notes, including this to me startling assertion....

The Harvester is the sole North American representative of a tropical Old World group of carnivourous gossamer winged butterflies.

It turns out that the larvae of this butterfly eat aphids - the Woolly Alder Aphid to be specific. It might be possible that other similar species which also form woolly wax covered colonies may also do.

The butterfly overwinters as a pupa. Adults emerge in the spring in mid May. Eggs are laid adjacent to aphid colonies. Greenish-brown larvae emerge from the eggs and enter the crowd of aphids. The white waxy threads of the aphids also stick to the prominent tufts on the larvae's body segments, helping them to blend in. Only 10-12 days later, the larvae is mature and pupates. In Manitoba, at least two generations are known to occur in a single season.

The population of Harvesters in Manitoba is probably limited by the availability of its prey species. The book describes it as "quite local, seldom abundant and populations fluctuate from year to year"

Woolly Alder Aphids also have a complex life. They start out the season on their primary host variously reported as Sugar maple or Silver maple. The colony formed there creates a generation that move to their secondary host Alders. These are the obvious white colonies on branches that persist through the summer. In autumn a sexual generation is produced that then returns to the primary host.

This story is somewhat problematic in a Manitoba setting as neither of those maple species occur here. It could be that the Manitoba populations are simply skipping the sexual generations and the primary host and only overwintering under fallen leaves or in loose earth beneath alder trees. All reproduction may then be parthogenetic.

it will be interesting to see what we observe.

all Manitoba observations of..

in the world more....

Lähetetty 12. heinäkuuta 2021 02:13 käyttäjältä marykrieger marykrieger | 1 havainto | 0 kommenttia | Jätä kommentti

3. heinäkuuta 2021

Hackelia - stickseed

found in Manitoba

Hackelia deflexa - northern stickseed
native to Northwest Territories, British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New Brunswick

Hackelia floribunda - many flowered stickseed
native to British Columbia, Alberta, Saskatchewan, Manitoba, Ontario

found elsewhere in Canada but not in Manitoba

Hackelia ciliata - Okanagan stickseed
native to British Columbia

Hackelia diffusa - spreading stickseed
native to British Columbia Imperiled in Canada

Hackelia micrantha - Jessica's stickseed
native to British Columbia, Alberta

Hackelia virginiana - stickseed
native to Ontario/Quebec;

some links with additional descriptions...

Lähetetty 3. heinäkuuta 2021 18:27 käyttäjältä marykrieger marykrieger | 0 kommenttia | Jätä kommentti

23. kesäkuuta 2021

American Arachnological Society virtual bioblitz June 25-27 2021 - join their project to participate.....

Make arachnid observations from wherever you are over the weekend of their annual meeting, from Friday June 25 to Sunday June 27, 2021. There will be fun prizes for the most observations, the most identifications, and more! The project is for folks who want to participate in finding arachnids and having arachnologists looking at the ID's. So a chance to put a little extra effort into photographing your local spiders and see what some experts think.

project link: https://www.inaturalist.org/projects/aas-2021-virtual-bioblitz-364cdd97-db65-4b71-95b7-9c05543bfb90

More about the annual meeting here...
https://www.americanarachnology.org/aas-meetings/aas-meeting-2021/ #Arachnids21

here's some notes on what helps to get a spider identified from tips and tricks...

Photograph the shape of the spider’s web and take note of its habitat. Use your macro lens to obtain close-ups of the top side and underside of the spider, as well as a shot of the face head-on to see the position of the eyes. Photographing the eye arrangement and dorsal pattern can help you identify the spider to family or genus.
How They Got The Shot
Thomas Barbin(https://inaturalist.ca/people/thomasbarbin)
“I like to encourage active spiders (especially jumping spiders) onto a stick, leaf or rock to make photographing them easier. I hold the object with the spider in my left hand while resting the end of my lens on the palm/wrist area of my left hand. This allows everything to move as one, making it easier to focus on the spider. As I track and photograph the spider,I move the object with my fingers to get all the key angles for ID. Once I have what I need for an ID, I like to get creative with different angles. By facing different directions, I can choose what I want the background to be (blue sky, green leaves, dark background, etc.). Jumping spiders can be especially tricky and like to jump. When they jump, they leave a dragline attached to the object they jumped from and repel down. Try to grab their dragline before they hit the ground and lift them back up to your stick/leaf/rock!”
Lähetetty 23. kesäkuuta 2021 21:54 käyttäjältä marykrieger marykrieger | 2 kommenttia | Jätä kommentti

15. huhtikuuta 2021

2 weeks to City Nature Challenge - and a video to share

The new City Nature Challenge video is up now. It's posted on YouTube and on Vimeo,. Feel free to share it far and wide!

Lähetetty 15. huhtikuuta 2021 13:33 käyttäjältä marykrieger marykrieger | 0 kommenttia | Jätä kommentti

24. maaliskuuta 2021

Count down to CNC 2021 begins

The first of my countdown journal posts is up. If you join the project, the posts will appear in your iNat feed on the dashboard.


Lähetetty 24. maaliskuuta 2021 03:25 käyttäjältä marykrieger marykrieger | 0 kommenttia | Jätä kommentti

17. maaliskuuta 2021

City Nature Challenge April 30 to May 4 2021

Hop on the bandwagon and join those marking off April 30 to May 4 to participate in the annual City Nature Challenge - a 4 day bio blitz.

Participating communities are setting up their projects - you can see the growing global list at https://citynaturechallenge.org/ ; and the Canadian participants at https://cwf-fcf.org/en/explore/inaturalist/cnc/

Not near any of these? That's okay - join City Nature Challenge 2021: Global Project - for all those observers who would like to contribute but are in Thompson or Brandon; Riding Mountain National Park or Wapusk National Park, Pinawa or Emerson - or anywhere at all on earth not included in one of the established CNC survey areas on the four days in question.

If this sounds like you, click on the link >> https://inaturalist.ca/projects/city-nature-challenge-2021-global-project and join up for your observations from those 4 days to be included in the big total.

Lähetetty 17. maaliskuuta 2021 21:59 käyttäjältä marykrieger marykrieger | 0 kommenttia | Jätä kommentti

21. helmikuuta 2021