Hot Moths #MothsMatter

The mercury had been rising for a few days, nudging up the little iron shims on the garden’s max-min thermometer by mid-afternoon. Three days on the trot it has peaked at a little over 30 Celsius in the shade despite it having been a Bank Holiday Weekend. Nights have been sultry, as they say in a certain kind of pulp fiction. Humid, and the mercury not nudging the iron bars below about 16 Celsius.
Face to face with an Old Lady, Mormo maura
Of course, these are not extremes, these are puny temperatures when compared to much of the rest of the world. But, this is England and our weather is tempered by the Gulf Stream and admonished of late by global warming. It’s been good for the night-flying creatures you know I love. Both the bats and the moths.
Face-on view of Burnished Brass, Diachrysia chrysitis
The moths far outnumber the bats of course. In the scientific trap, drawn to the 40 Watt actinic, UV light, there were at least 421 leps of more than 43 species (highest density but not diversity so far for me in my garden in 2019).
Pebble Hook-tip, Drepana falcataria
I keep a detailed record, but some of the micro-moths, the grass veneers, for instance, don’t always get segregated in my logs, so where I say Satin Grass-veneer or Chrysoteuchia culmella, it is possible that I’ve overlooked a distinct species of the 2000 or so micro moths of the British Isles.
Setaceous Hebrew Character and Swallow Prominent
For the macro moths, I’m 99.9% certain I̵...

Source: David Bradley Sciencebase - Songs, Snaps, Science - August 27, 2019 Category: Science Authors: David Bradley Tags: Moths Source Type: blogs