Legumes

The scientific name Pyrrhia unbra Hufnage1 belongs to the order Lepidoptera, Noctuidae. Synonyms Pyrrhia angulata, Pyrrhiaaconiti, Phalaena μmbra, Noctua conspicua, Noctua marginata. Alias ​​smoke flame moth, bean yellow moth. Distribution northeast, Hubei, Xinjiang, Hebei, Shandong, Tibet; Japan, North Korea, Russia, India, Europe, North America and other places.

Host rape, soybeans, tobacco, buckwheat and so on.

The larvae are harmful to larvae and can damage the leaves of rapeseed and soybeans, and they are nicks or holes.

Morphological characteristics Adult body length 12mm, wingspan 32mm. The head and chest are yellow-brown, with a black pattern on the fin base and brown hair on the belly. The forewings are yellow, the aubergine is fine, the lines on the wing surface are distinct, and the outer line to the outer edge are purple-gray; the baseline is auburn, straight to the sub-inner pleats; the inside line is auburn, with a large zigzag; the sword lines are yellow, and the ends have a dark brown edge; Yellow, auburn side; kidney pattern yellow, a light black spot at the center, auburn edging, extrude to the posterior of the renal pattern, oblique inside and oblique; outer black and brown, the latter half parallel to the midline; sub-line black, zigzag, slightly intermittent; The end line is dark brown. The veins are auburn, the frontal veins are grayish black, and there are three white spots from the outside to the subendian line. The hind wings are pale yellow, the veins of the wings and the veins of the cross veins are slightly black, and the end area has a large black spot and the end line is brown. The larvae are about 38 mm in length, grayish brown on the head, and blue or reddish-brown on the chest. They have small white spots and yellow lines. The top line is dark brown, with 3 pairs of thoracic feet, 4 pairs of gastropods, and 1 pair of sulcus. It is about 12mm long, long oval, red-brown.

Habits of life Jilin larvae appeared in large numbers in the middle and early June. They attacked the bean leaves, and from mid-June to mid-July, the larvae entered the final stage of age, and began to metastasize. A new generation of adults emerged from early to late August. The larvae are not lively, and they like to damage the upper middle leaves.

See mulberry pests, red-brown ash moth, for control methods.