Lockdown 2020 was a great opportunity to investigate some of the insects in my garden and I joined many other kiwis and became a backyard naturalist. My main research interest is in the small (by that I mean 1-3 mm long) parasitic wasps of New Zealand - discovering what species we have in our native forests and other natural ecosystems but not paying too much attention to modified urban and suburban environments. This was the perfect opportunity to get to know the locals.
One of my main methods to survey these little insects is to use yellow pan traps, small bright yellow bowls containing tap water plus a few drops of an unscented detergent. Not a very sophisticated technique but it delivers the goods. Yellow is strong entomological magic - many insects of all kinds are attracted to it, land on the water and drown. Two days later I sieve the contents, wash them in fresh water and transfer them to a jar with 70% alcohol preservative, then examine the catch under the microscope. It's quite exciting to sort the sample - a real lucky dip.
The Lockdown period was mild and sunny, there was a lot of insect activity and I had great success, from traps placed around the garden and lawn, and particularly in my compost heap (a euphemism for the place where I randomly toss the kitchen scraps and garden waste). There were many parasitic wasps I had never seen before, some cosmopolitan species that are known to parasitize pupae of house flies and blowflies which are prolific in the compost, but also some native species well known to me from native bush habitats. Given the wealth of specimens I decided to continue trapping to monitor changes over time and so I ran the traps for two consecutive days in the middle of each month (as long as it wasn't cold, windy and wet), and I'm continuing this even now - over a year since I started.