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.

Invert Alert

2015 May 25

 

   Aziza Cooper writes: 

 

   Hello, butterfly observers,

 

Attached is a list of butterflies of the Victoria checklist area which uses bars and symbols to show the flight periods and frequency of occurrence. It was compiled by Steve Ansell from data from the late 1990s, so there have been various changes since then in taxonomic order, accepted names, splits, declines and newly observed species.

 

Even though it’s not up to date, it’s a useful list to consult to determine the species likely to be seen throughout the butterfly season. Steve has generously made it available to us, and he says:

 

If anyone would like to bring it more up to date with new content and/or formatting, please feel free!

 

Sounds like a great project! Thanks very much to Steve.

 

Aziza

 

 

Legend:

Dotted line: Hibernating  species – may occasionally be seen on a warm winter day

Dashed line: Rare – has occurred, but may not always be found

Solid line: Uncommon – usually able to find a small number of individuals

Single red bar: Common – should always be present in moderate numbers

Double red bar: Very Common – present in moderate to large numbers

Triple red bar: Abundant – always present in large numbers

Large circle: Single record – migrant or stray

Four dots: Record from nearby region outside the checklist area, typically up-Island or higher elevations

Question mark: Uncertain record

 

Habitat

L: Local – found only in a limited number of locations

R: Restricted – found only in a specific habitat

W: Widespread – found over a variety of habitats

 

Status

X: Extirpated – no longer found in the area

D: Declining – population has declined significantly in recent years

U: Uncertain – status within the checklist is not well known

Hy: Hypothetical – no recent confirmed records

M: Migrant – only occurs as a migrant in the area

 

Thank you to Derrick Marven, Jeremy Tatum, Jeff Gaskin and others for their contributions.

 

 

   Julie Michaux sends photos of a female giant sawfly, often known as the Elm Sawfly (though not restricted, I think, to elm) taken by her friend Lindsay Critchley at the Cedar Hill Duck Pond  (King’s Pond?) on May 18;  and a Bald-faced Hornet from Julie’s garden on Old West Saanich Road.

 Giant sawfly Cimbex americana (Hym,: Cimbicidae)  Lindsay Critchley

White-faced Hornet Vespula maculata (Hym.: Vespidae)  Julie Michaud

 

White-faced Hornet Vespula maculata (Hym.: Vespidae)  Julie Michaud

 

 

   D. L. Parker sends a photograph of a Polyphemus Moth from his door today.

 

 

Polyphemus Moth  Antheraea polyphemus (Lep.: Saturniidae)  D. L. Parker

 

 

   Annie Pang reports a Western Tiger Swallowtail at Gorge Park today, and three Cabbage Whites in nearby Obed Avenue.  However, she comments on an apparent paucity of Western Tiger Swallowtails this year.  Several Pale Tiger Swallowtails (I don’t know why Cris omits the “Tiger” from this Pterourus) have been reported this year, but Jeff Gaskin has also commented on the small number of Westerns, and I have noticed it, too.  It is a little early in the season, but there should be some around by now.  I wonder if others share this impression.