Aphids, butterflies, many types of flies, mosquitoes, ticks, fleas, squash bugs, and probably many others.
butterflys
Planaria ingest food through a flexible tube-like pharynx that it can stick out from the middle of it's ventral side. The mouth is located at the end of this tube. The planaria sucks food in through this tube.
The function of the insects circulatory system is the transportation of food, but not oxygen through the body. insect blood is green, not red like mammal blood. The insect heart is a simple tube running along their backs.
The planarian feeds on crustaceans, larvae, and small worms. To eat, it extends a long, tubular pharynx from its mouth. Through this tube it secretes digestive juice onto its prey, then sucks in bits of partly-digested food.
The esophagus.
Some insects use siphoning, as if sucking through a straw, like moths and butterflies. This long mouth-tube that they use to suck up the nectar of the flower is called a proboscis.
The insects have a long tube that go through the food & They suck The juice or They can chew because they have little teeth ..
It goes through a hallow tube called the esophagus.
All insects breathe through spiracles, except for insects that live in the water. A water stick insect breathes through an air tube.
Most insects have a dorsal tube that is divided into different chambers. This is what serves as the heart in an insect. The dorsal tube is located toward the thorax which is in the midsection of the insect.
The esophagus is the tube food passes through to reach from your mouth to your stomach.
esophagus
The water stick insect breathes oxygen even though it can swim under water. It has a long tube that comes off its back through which it inhales and exhales.