Fill in "()" to indicate action. What aphid?

2, disgusting aphids.

3. Terrible aphids.

4, dense aphids.

5. tiny aphids.

Extended data:

Body length 1.5 ~ 4.9 mm, mostly about 2 mm, sometimes wax powder, but lack of wax flakes. The antenna has 6 nodes, a few have 5 nodes, and a rare one has 4 nodes. It feels round, rarely oval, and the end of the end node is usually longer than the bottom. There are big and small eyes, and there are often three prominent small eye tumors. The beak tip is short and blunt, long and short. The abdomen is larger than the sum of the head and chest.

There are often tumors in the chest and abdomen. The ventral tube is usually tubular, longer than the width, thicker at the base, tapering gradually to the end, sometimes swollen at the middle or the end, with prominent edges at the top, smooth surface or corrugated or reticulated at the end, and few hairs or annular or missing ventral tubes.

The tail is conical, finger-shaped, sword-shaped, triangular, pentagonal, helmet-shaped to half-moon-shaped. The end is round. The epidermis is smooth, reticulate or wrinkled, or has micro-spines or granular spots. The body hair is sharp or the tip expands into a head or fan shape.

Aphids usually have six antennae, and the third or third and fourth or third to fifth antennae have secondary sensory circles. The midrib of the anterior wing is usually divided into 3 branches, and a few branches are divided into 2 branches. The hind wing usually has two elbow veins, and rarely the hind wing becomes smaller and the veins degenerate. Veins are sometimes edged with black. The body is translucent, mostly green or white.