Here are some different insect songs:

The Insects Outside

(To the tune of The Wheels on the Bus)
The fireflies at night go blink, blink, blink
Blink, blink, blink, blink, blink, blink
The fireflies at night go blink, blink, blink
Out in the garden.

The bees in the flowers go buzz, buzz, buzz
Buzz, buzz, buzz, buzz, buzz, buzz
The bees in the flowers go buzz, buzz, buzz
Out in the garden.

Continue with the other verses as:
cricket/fields/chirp
ants/in the grass/march
caterpillars/on the leaves/munch
spiders/in the bush/ spin their webs
butterflies in the sky/go flit
ladybug on the wall/ have lots of spots
worms/in the ground/ wiggle and squirm
mosquitoes outside/ they get smacked

To the tune of "Frere Jacques"
Big bug, small bugs
Big bugs, small bugs
See them crawl
On the wall
Never, never falling,
Never, never falling,
Bugs, bugs, bugs
Bugs, bugs, bugs

A Finger play
1, 2, 3 ?( hold up fingers)
There's a bug on me! (point to shoulder)
Where did it go? ( brush off)
I don't know (Shrug shoulders and look really puzzled)

Little Butterfly
(sung to I'm A Little Teapot)
I'm a little butterfly
I have wings
I fly around
And see all things.
When I see a flower
That looks great
I call out
To all of my mates.
Go home

Have questions?