This week we were doing some tree planting along the Otonabee River shoreline at Rotary Park, north of the London Street Footbridge. The kids we were working with found two incredible looking bugs in the soil that I haven’t been able to identify. Do you know what these monsters of the soil are? They were both quite fearsome looking larva!

transforming larval fishfly 2 (Chauliodes rastricornis) Erin McGauley

transforming larval fishfly 2 (Chauliodes rastricornis) Erin McGauley

Erin McGauley, Peterbrough

Mystery solved 

The beetle-like insect on the cloth is the larval stage of the Dog-day Cicada (Tibicen canicularis) and the second is a transforming larval fishfly (Chauliodes rastricornis). Larvae of the cicada are subterranean, feeding on the roots of trees; larvae of the fishfly are aquatic but in the last instar come ashore, locate a pupal chamber, usually in a rotten log, and then transform to winged adults. Don Sutherland, Zoologist, Natural Heritage Information Centre

 

Dog-day Cicada larva 2 - Erin McGauley

Dog-day Cicada larva 2 – Erin McGauley

Dog-day- Cicada larva - Erin McGauley

Dog-day- Cicada larva – Erin McGauley

transforming larval fishfly - Chauliodes-rastricornis -Erin McGauley -  June 27, 2014

transforming larval fishfly (Chauliodes rastricornis) -Erin McGauley June 27, 2014

Categories: Sightings

Drew Monkman

I am a retired teacher, naturalist and writer with a love for all aspects of the natural world, especially as they relate to seasonal change.