My pal in Canada, Silver Donald Cameron, introduced me recently to
ROBERT PYLE who is...
..... ''a lepidopterist – an expert on butterflies – and who in 1971 established the Xerxes Society for the preservation of invertebrate animals, animals without backbones, which constitute 95% of all animals. Think of spiders, lobsters, flies, ants, starfish, worms.''
PS: see also a term coined in 2010 by Professor Albrecht in Australia: "solastagia."
By the way, speciestude is the negative attitude that many people hold in regard to the slow disappearance and extinction of so many species on Earth.
Quite the opposite, speciestalgia is the feeling that we are left with when we see so many species going extinct in the Anthrocene.