Jagged Ambush Bugs: https://scholar.valpo.edu/tgle/vol46/iss2/2/
Sphecid Wasps of the World: https://archive.org/details/bub_gb_FExMjuRhjpIC/mode/2up
United States Oil Beetles (Meloe): https://www.inaturalist.org/observations/142239139
Ants in the Genus Formica: https://www.inaturalist.org/observations/156566762
Northeast spruces: https://www.maine.gov/dacf/mfs/publications/handbooks_guides/forest_trees/pdf/Spruce.pdf

Fungi tips:

• Laccaria key: https://www.svims.ca/council/Laccar.htm
• Mycoquebec is a REALLY good resource that basically covers all of New England mushrooms with nice descriptions. An issue for some is that the site is in French, but copy and pasting the descriptions into google translate works well without major issues (usually).
• Mycoquebec page for Laccaria: https://www.mycoquebec.org/bas.php?post=Laccaria&l=r&nom=Laccaria%20laccata%20var.%20pallidifolia%20/%20Laccaire%20laqu%C3%A9,%20vari%C3%A9t%C3%A9%20%C3%A0%20lames%20p%C3%A2les&tag=Laccaria%20laccata%20var.%20pallidifolia&gro=22
• If looking for all the species in a certain genus/family present in the Northeast area, one can view a list here: https://www.mycoquebec.org/newCardex.php?l=g&trie=22

Beech Leaf Disease vs. Aphid damage
https://bygl.osu.edu/node/1176