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.

2021 July 22

2021 July 22

    Kalene Lillico sends photographs of a fly and a bug nymph from Swan Lake.  The fly was identified as Rhagoletis by Cara Gibson.  It is on the fruit of Oregon Grape, and this (together with other details) makes it almost certainly Rhagoletis berberis.


Rhagoletis berberis (Dip.: Tephritidae)  Kalene Lillico

  The bug is a nymph.  Jeremy Tatum writes:  My best effort is

Certainly Pentatomidae

Probably  Chlorochroa

Possibly  C. ligata


Probably Chlorochroa (possibly ligata) (Hem.: Pentatomidae)   Kalene Lillico

   Jeremy Tatum writes:  Today, July 22, I saw two pristine-fresh Mourning Cloaks near the bubble aerator at the NE end of the boardwalk at Swan Lake.  Mourning Cloaks lay their eggs in a large batch and the young caterpillars stay close together, dispersing a bit when they are full-grown.  It is therefore likely that there are other freshly-emerged adults in that area.  Butterfliers should be aware that at present, owning to construction, it is very difficult to drive down Rainbow Street to Swan Lake.

  Jeremy writes that today he also saw two pristine-fresh Pine Whites at Sitting Lady Falls, Witty’s (Metchosin) Lagoon.