Characteristics and living habits of red sky moth

Deilephila elpenor is an insect belonging to Lepidoptera and tianmothidae. It is distributed in Heilongjiang, Jilin, Liaoning, Qinghai, Gansu, Shanxi, Beijing, Hebei, Shandong, Anhui, Jiangsu, Shanghai, Zhejiang, Hubei, Guizhou, Sichuan, Yunnan and other places. Host to Impatiens, willow orchid, honeysuckle, autumn orchid, Rubiaceae, Salicaceae, grass flowers, grapes, etc. The body length is 33 ~ 40mm and the wing spread is 55 ~ 70mm. The body and wings are mainly red, with red and green flashes. Larvae eat leaves, and in severe cases, the leaves are eaten up.


morphological character
adult
The body length is 33 ~ 40mm and the wing spread is 55 ~ 70mm. The body and wings are mainly red, with red and green flashes, and there are two vertical red bands on both sides of the head and back; The dorsal line of abdomen is red, both sides are yellow green, and the outside is red; There are black spots on both sides of the first section of the abdomen. The base of the forewing is black, and the leading edge and outer transverse line, sub outer marginal line, outer edge and cilia are dark red. The outer transverse line is thinner near the apical angle, and thicker towards the trailing edge; There is a small white dot in the middle chamber; Hind wing red, black near base half; The reverse side of the wing is bright, and the front edge is yellow.
egg
Round, pink.
larva
The body length of mature larvae is 75 ~ 80mm; The head and front chest are small, the back chest is expanded, and the body is densely covered with reticulate lines; The chest is light brown, scaly, and the chest feet are yellowish brown. There are a pair of dark brown eye patterns on the back of the first to second abdominal segments, with crescent shaped light brown spots in the middle and white around the spots; There are light horizontal lines on the back of each abdominal segment and light oblique lines on the body side; The tail horn is dark brown, and the abdomen is dark brown.
pupa
Spindle shaped, 42 ~ 45mm long, grayish brown, with dark brown spots.
Living habits
Two generations occur in one year. Winter in shallow soil with pupae. Adults have phototaxis. They hide in the shade of the canopy and buildings during the day, come out in the evening, mate and lay eggs. The eggs lay on the tender shoots and leaf ends of the host flowers. The egg stage is about 8 days. Larvae come out day and night, causing serious harm in the early morning. Larvae were harmed from June to September. In October, the mature larvae enter the soil, stick with silk and soil particles to form a coarse cocoon, and internalize the pupae to overwinter. Its harm is the same as that of Diptera taro.
Main hazards
Larvae harm Rubiaceae, Impatiens, honeysuckle, willow leaf vegetables, grapes, Parthenocissus, brocade and a variety of flowers.
Control method
(1) Plough the soil from late autumn to early spring to eliminate overwintering pupae.
(2) Kill larvae and trap adults with black light.
(3) Spraying 80% dichlorvos EC or 40% Omethoate EC or 50% parathion EC or 50% parathion EC 1500 ~ 2000 times, 25% quethion or 50% methomyl or 50% fenitrothion or 50% phosphamide 1000 times during larval damage period; 10% bromohorse EC, 20% chrysanthemum horse EC, 20% chlorohorse EC, 20% fenpropathrin EC 2000 times, 2.5% Kung Fu or 10% Uranus EC 3000 ~ 3500 times.

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