The given diagram demonstrates the difference between small and large Venus flytraps in absorbing small insects or species by their digestive enzymes.
Overall, both traps illustrate three particular steps, each describing in detail the operating principle of one of the species, usually called a predator plant.
On the one hand, small Venus flytraps might be interested in tinier insects than the large ones, especially ants, flies, and much more. First, there was an experiment on the Discovery Channel which mentioned its own remarkableness in attracting various insects by its special smell. After that, the plant uses numerous trigger hairs located inside the trap to hold the prey. Then, it shuts the trap and starts absorbing nutrition from the insects.
In contrast, the large trap depicts the exact same process as the small Venus flytrap in the first two steps. However, it seems that it might not be able to handle tiny species. When the trap snaps shut, the prey might still escape, which forces the flytrap to open and try trapping other bigger insects.