There's something about this - a working within tight constraints (similar, but not identical) - that reminds me of Edward Thomas's "Out in the Dark" ...
http://ww1lit.nsms.ox.ac.uk/ww1lit/c...ions/item/2930
It seems to me a moment of extreme introspection, captured well.
I did just wonder about the exhaling of the insects.
Cheers
David