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 ( 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.

June 6

2021 June 6


   Jeremy Tatum writes:  Here is a now full-grown caterpillar of a Sheep Moth reared from eggs found on Snowberry on Mount Tolmie – see Invertebrate Alert for April 4.  The spines on the caterpillar look very similar to the spines on the caterpillar of a comma butterfly (see yesterday’s Invert Alert), but they are in reality very different.  The spines on the comma caterpillar are quite harmless, but those on the Sheep Moth caterpillar will give you a nasty rash if you touch them.


Sheep Moth Hemileuca eglanterina (Lep.: Saturniidae)  Jeremy Tatum


   Here’s photograph of a rather small noctuid (only 15 mm from head to apex of the forewing) raised from a caterpillar found on willow along Munn Road.  This was quite difficult to identify, and I am very grateful to Libby Avis for her efforts to identify it.

Brachylomia thula (Lep.: Noctuidae)  Jeremy Tatum


   Jochen Möhr reports just one lonely Stenoporpia excelsaria.   He writes:  Although yesterday’s flew off when I tried to get a better picture, it may still be the same one.  


Stenoporpia excelsaria (Lep.: Geometridae)   Jochen Möhr