Swarm Assault Level 34 - A Day In The Field

This is a medium level.. The yellows have the scorpion colony, and they will start attacking the neutral spider colony. I tried several times to make a go for the neutral spider colony early itself, but always lost.. So I had to take the longer approach:
Start producing cannons obviously. Take over the wasp North-most wasp & beetle colonies. Start production on assault wasps once the wasp colony health is in the Greens. Now, the important thing is to bid your time and let the battle between Yellows (who by now will have a spider colony) and the Reds play out.. Yellows will be leading and the Red spider colony will be in medium to low health.
But in order to survive till here, you must deploy sentries protecting base colonies on top.. Post bunch of cannons below the North colony line (E.g., in the "Green" lands etc) to kill off attacking missile spiders and scorpions etc.
Once you have enough wasps and cannons, take a bunch of them and go down and take over the Red spider colony (at an appropriate time.. maybe close in using some cannons on the damaged colonies.. kill of enemies when they collect seeds etc).

EDIT (after I got much better at this game):
I produced 2-3 more cannons while starting the attack on the neutral wasp colony with the existing cannons, and then permanently switched to ladybug production (having realized the high utility of ladybugs - they're very fast to produce, quite agile, highly damaging and quick-acting at short enough range; cannons, on the other hand, are very slow to produce, very sluggish, just as fragile, the only advantage is range, which is useful in the beginning, later it's the numbers that matter).
Once the wasp colony was taken, I moved the cannons to take the neutral beetle colony to the top-right; moved more ladybugs to below the healing wasp colony and then, the newly colonized beetle colony, which the red spiders had started attacking.. From this moment on, I bid my time, easily posting ladybug sentries below my 3 colonies and watching out for invaders in the full map. Started production on assaults (later, ladybugs from the right beetle colony). I didn't even have to wait for the spider colony to be low on health; I had so many ladybugs that along with the wasps, I could easily blow up the contested (between Reds & Yellows) beetle colony at the bottom and then bring down and occupy the Red spider colony. Then, I moved my attack to the left, bringing in swarms of ladybugs from the 2 beetle colonies on top.. The top left colony had enough ladybugs near it to easily take down the yellow spider colony and with some wasps, the yellow scorpion colony. I never had to start production on the spider colony.