This blog provides an informal forum for terrestrial invertebrate watchers to post recent sightings of interesting observations in the southern Vancouver Island region. Please send your sightings by email to Jeremy Tatum (tatumjb352@gmail.com). Be sure to include your name, phone number, the species name (common or scientific) of the invertebrate you saw, location, date, and number of individuals. If you have a photograph you are willing to share, please send it along. Click on the title above for an index of past sightings.The index is updated most days.

May 30 morning

2020 May 30 morning

 

   On May 26, Annie Pang saw her first, and so far only, Western Tiger Swallowtail in Gorge Park. On May 29, Jochen Möhr saw two Western Tiger Swallowtails and one Anise Swallowtail in Metchosin.  Jeremy Tatum laments that he has not yet seen a swallowtail of any species this year.

 

   On May 29, Gordon Hart photographed this Elm Sawfly at Maber Flats:

 


Cimbex americana (Hym.: Cimbicidae)  Gordon Hart

May 29 afternoon

2020 May 29 afternoon

 

   Jochen Möhr’s moths from Metchosin this morning:

 

3   Eupithecias 

1   Hydriomena

1   Nadata gibbosa

3   Panthea virginarius

12 Tyria jacobaeae

 1  Udea profundalis

1  Xanthorhoe defensaria

 

   The highflyers (Hydriomena) and pugs (Eupithecia) are awfully difficult groups to identify from photographs with certainty, so Libby insists that her suggestions for the two below are “possibly”!

Possibly Hydriomena marinata (Lep.: Geometridae)  Jochen Möhr

Possibly Eupithecia tripunctaria (Lep.: Geometridae) Jochen Möhr

   Rosemary Jorna photographed the bee below at Muir Creek on May 28.  Thanks to Lincoln Best for the identification to subgenus.

 


Andrena (Trachandrena) sp. (Lep.: Andrenidae)  Rosemary Jorna

   For those not so familiar with the minutiae of scientific nomenclature, Andrena is the genus, and the Trachandrea following in parentheses is not some sort of an afterthought, or an uncertainty, or an alternative name.  It is the subgenus within the genus Andrena.

 

 

May 29 morning

 

2020 May 29 morning

 

   Jochen Möhr writes:  On May 27, Chris and I did a tour through Metchosin.  On the way in, I spotted one Anise Swallowtail and one Cabbage White along the road.   Then we went to some farms, on one, which has several acres of various Brassica, there were at least a dozen Cabbage Whites fluttering about, but nothing else.

 

Before that time, observing from my deck for about an hour, I had about 10 sightings of blues but did not get close enough to document them.  There were also two sightings of a Cabbage White and a sighting of an Anise Swallowtail and one of the other tiger swallowtails.

 

Yesterday morning, the results of observations from the deck were similar: 5 Blues, one Cabbage White, one each of Anise and tiger swallowtail.   Finally, we are now inundated with Adela septentrionella.

 


Adela septentrionella (Lep.: Adelidae)  Jochen Möhr

Adela septentrionella (Lep.: Adelidae)  Jochen Möhr

   And now a snakefly and a click beetle from Jochen.  Thanks to Scott Gilmore for identifying the snakefly to genus.

 

Snakefly Agulla sp. (Rha: Rhaphidiidae)  Jochen Möhr


Selatosomus suckleyi (Col.: Elateridae)  Jochen Möhr

 

May 28 evening

2020 May 28 evening

 

   Jeremy Tatum writes:  This afternoon I went to the railway line north of Cowichan Station.  It was very, very hot.  Too hot, I think, even for butterflies, and certainly too hot for me.  There were very few butterflies.  This is what I saw:  3 Margined Whites, 1 Mylitta Crescent, 4 Western Spring Azures, 1 Red Admiral.   I still haven’t seen a swallowtail this year!

 

  I didn’t see any Western Tailed Blues.  About a mile along the track, there is a big patch of Lathyrus sylvatica, which is potentially larval foodplant for the Western Tailed Blue.  The flowers were nowhere near yet coming out.  Perhaps two, or three, or four weeks and the flowers will be out, and there may then be Western Tailed Blues laying eggs on the calyces of the flowers

 

  On the way back I stopped at the lupin patch at Koksilah Road and Trans-Canada Highway.   I saw about 5 Silvery Blues there.  While I was standing by the lupin patch and obviously looking at it carefully, I was approached by a lady who asked if she could help, which, as everyone knows, is code for:  You are trespassing on my property, get off!.   Actually I was just on the public side of the fence, so I didn’t need help.  She told me that the lupins were spreading and they were encroaching on to her property, and she was having them all cut down and destroyed.    I told her about the butterflies, and I even showed her two of them, but not, I think, to any avail.  So we are about to lose that colony.  That brings up again the question that Jochen asked:  What can we do to stop the destruction of our butterflies?

 

   Jochen’s moths from Metchosin this morning:

 

1 Adela septentrionella (in bathroom)

2 Eupithecia sp.

1 Nadata gibbosa (same as yesterday)

3 Panthea virginarius

3 Tyria jacobaeae

3 Venusia obsoleta/pearsalli

1 Peridroma saucia

 


Panthea virginarius (Lep.: Noctuidae)  Jochen Möhr

 

   Libby Avis says of the next one:  Markings not too clear, but looks like Peridroma saucia, which can be quite variable (although usually drab) but has that distinctive pearly underwing. [And the moth is indeed known in Britain as the Pearly Underwing.  Jeremy Tatum]

 

Pearly Underwing Peridroma saucia (Lep.: Noctuidae)  Jochen Möhr

 

   Jeff Gaskin writes:  Kirsten Mills called me and says she found at least one Field Crescent on Stelly’s Cross Road – on some daisies and near blackberry bushes.  The site is also near West Saanich Road. And she believes there’s even more of the small butterflies further in.  This site is close to Eddy’s Storage.

 

More tomorrow – haven’t been able to post all of of today’s messages!   JT.

May 28 morning

2020 May 28 morning

 

   Colias alert!  Val  George writes:  Yesterday afternoon, May 27 in the parking lot at Goldstream Park, I was very surprised to see a species of butterfly I wouldn’t have expected in that habitat, and in any case it’s a rare species for this area. I was sitting in my car eating lunch when a sulphur (Colias sp.) butterfly flew past me.  Though it was only a few metres from me I was not able to identify it to the species level.

 

  Jeremy Tatum writes:  May we perhaps speculate?   The usual sulphur that we see (rarely) is the Orange Sulphur C. eurytheme.   Last time that we had an irruption of these, we were fairly sure that among them were also a few Clouded Sulphurs C. philodice.  But both of these are migratory species that we see occasionally at the very end of summer.   I can’t offhand remember any sightings for May.  So perhaps Val’s butterfly might be the resident (up-Island) Western Sulphur C. occidentalis.  In any case let’s all keep an eye out for whatever it is!

 

   Gordon Hart writes:  There were a few butterflies and moths around home yesterday, Wednesday, May 27. A Pale Tiger Swallowtail, and a Western Tiger Swallowtail, two Cedar Hairstreaks, four or more Western Spring Azures, and a Propertius Duskywing.  There were several small plain moths, and one Helicopter Moth ( I think that is their common name),  Emmelina monodactyla. At Panama Flats yesterday, we saw several Cabbage Whites and a faded Painted Lady, as well as a damselfly, Tule Bluet Enallagma carunculatum.

 

  Jeremy Tatum writes:  I hadn’t heard the name “Helicopter Moth”, but that sounds good.  I have been calling them privately the Rumpel Taube (Dove) after a very early German monoplane.  The caterpillars feed on the flowers of Calystegia.

 


Emmelina monodactyla (Lep.: Pterophoridae)  Gordon Hart

 

Propertius Duskywing Erynnis propertius (Lep.: Hesperiidae)  Gordon Hart

 

Tule Bluet Enallagma carunculatum (Odo.: Coenagrionidae)  Gordon Hart