Karstad Biodiversity Paintings: adventures in the colour of Canada

Ponera Ants on Cladonia (8 x 8 in. watercolour) 10 August 2017 found me in Spednic Lake Protected Natural Area, near McAdam, New Brunswick, following Aaron Fairweather around as he collected ants. Traveling light that year, I had decided that all my paintings for the New Brunswick Museum's BiotaNB survey would be in watercolour - a couple of scenes, and several wildflowers... and this painting of a few of the ants we collected, shown exploring a tuft of the Gray Reindeer Lichen, Cladonia rangiferina that was growing near their nest. Ponera pennsylvanica live in small colonies of no more than 60 workers, under stones and in rotting wood, foraging out singly for mites, springtails, and small insects. They are very tiny ants, only about 2.5 mm in length, so I was able to use one of the museum's microscopes to begin the painting in the BiotaNB lab set up in the Lion's Hall in downtown McAdam. For lifelike poses I referred to YouTube videos of this species in captiv...

"New Brunswick Pseudoscorpion" (oil on birch panel 12 x 16 in.) On 28 June 2019 , two days into this year’s BiotaNB survey as “Resident Artist” in the Kennedy Lakes Protected Natural Area, I found myself sliding down through the ocular tubes of a microscope, into the worlds of Rotifers and Water Bears.  As the botanists, returning to the lab trailer from their field excursions, identified their collections of fungi, mosses, and Liverworts, one of them called my attention to a Pseudoscorpion he’d found wandering among tiny mosses as if they were trees and bushes.  Pseudoscorpions are tiny predators, catching and eating anything smaller than themselves - mites, nematodes, and tiny larvae of this and that. The Pseudoscorpion we see most often is a little larger than the one I’ve painted here - the indoors species, Chelifer cancroides , is a welcome symbiont in pantry and closets. This one is as yet unidentified - the shape and proportions of claws to cephaloth...