heres my list hope it helps!!=)
More Common Bugs and Insects
Mantis: 430 Bells, On flowers
Orchid Mantis: 2,400 Bells, On flowers
Ladybug: 200 Bells, On flowers
Centipede: 300 Bells, On flowers
Common Butterfly: 90 Bells, Near flowers
Yellow Butterfly: 90 Bells, Near flowers
Monarch: 140 Bells, Near flowers
Honeybee: 100 Bells, Near flowers
Tiger Butterfly: 160 Bells, Near red and pink flowers
Peacock: 220 Bells, Near blue, violet and black flowers
Brown Cicada: 200 Bells, On trees
Longhorn Beetle: 260 Bells, On trees
Robust Cicada: 300 Bells, On trees
Bagworm: 300 Bells, On trees
Walker Cicada: 400 Bells, On trees
Evening Cicada: 550 Bells, On trees
Dynastid Beetle: 1,350 Bells, On trees
Lantern Fly: 1,800 Bells, On trees
Violin Beetle: 260 Bells, On trees
Fruit Beetle: 100 Bells, On trees
Bee: 4,500 Bells, In trees
Spider: 300 Bells, In trees
Long Locust: 200 Bells, Grass
Migratory Locust: 600 Bells, Grass
Cricket: 130 Bells, Grass
Grasshopper: 160 Bells, Grass
Bell Cricket: 430 Bells, Grass
Moth: 60 Bells, Near outdoor lights
Red Dragonfly: 80 Bells, Airborne
Mosquito: 130 Bells, Airborne
Darnier Dragonfly: 200 Bells, Airborne
Ant: 80 Bells, Ground (dropped candy)
Pill Bug: 250 Bells, Under rocks
Pondskater: 130 Bells, Ponds
Diving Beetle: 800 Bells, Ponds
Firefly: 300 Bells, Near fresh water
Fly: 60 Bells, Rotten turnips, garbage, Rafflesia
Rare Bugs and Insects
Snail: 250 Bells, On flowers
Agrias Butterfly: 3,000 Bells, Near flowers
Raga Brooke: 2,500 Bells, Near flowers
Birdwing, 3,000 Bells, Near flowers
Emperor: 2,500 Bells, Near flowers
Mole Cricket: 280 Bells, Underground
Dung Beetle: 600 Bells, Near snowballs
Flea: 70 Bells, Animal neighbor
Banded Dragonfly: 4,500 Bells, Airborne
Giant Petaltail: 8,000 Bells, Airborne
Scorpion: 8,000 Bells, On ground
Tarantula: 8,000 Bells, On ground
Walking Leaf: 600 Bells, On trees
Walkingstick: 600 Bells, On trees
Rainbow Stag: 10,000 Bells, On trees
Oak Silk Moth: 1,200 Bells, On trees
Cyclommatus: 8,000 Bells, On trees
Golden Stag: 12,000 Bells, On trees
Scarab Beetle: 6,000 Bells, On trees
Jewel Beetle: 2,400 Bells, On trees
Giant Beetle: 10,000 Bells, On trees
Miyama Stag: 1,000 Bells, On trees
Saw Stag Beetle: 2,000 Bells, On trees
Elephant Beetle: 8,000 Bells, On coconut palms
Hercules Beetle: 12,000 Bells, On coconut palms
Goliath Beetle: 6,000 Bells, On coconut palms
Atlas Beetle: 8,000 Bells, On coconut palms