Chinese name: no network aphid parasitoids
Latin name: aphidius ervi haliday
Name: Hymenoptera
Branch Name: aphids Braconidae
Subfamily name: aphid Braconidae
Is a name: aphidius
Morphological features: head transverse females than the width of thoracic wings at the substrate. Horizontal mirror on the cheek than the compound eye of short (4:5). Face width of head width of 1/2.2, cheek length of compound eye vertical diameter of 1 / 4. Acute triangle arrangement of the three were unilateral. Compound eyes large, oval (3:4), short thin hair. Screen bone index 0.3-0.4. Antennae 18 -19 Festival, a small number of 17.20, to the belly, Part 1 flagellum length is 3 times the width of the base section, such as 1,2 flagellum length, end section does not expand. Department of shield longitudinal groove on the rise significantly. And elongated abdomen section of the central chamber. Mole wing length 4-5 times width, mole ratio of moles after the pulse length of 1 / 3. Para 1,2 vein diameter ratio of 3:2. Ventral valve stem in length and is 3.5 times at the wide, with a faint longitudinal ridge; front side area wrinkles, no long rows of vertical ridge. Thicker ovipositor short. Body color brown; lip base, mouthparts, leg, abdominal scape brown. Body length 2.4-3.5 mm, 2.0-2.3 mm long antennae. Drone antennae 20-21 section, a few sections 19,20. Dark color than females. Body length 2.4-2.9 mm, antennae 2.3-2.5 mm. Aphid tan to white stiff; emergence holes in the left ventral tube at the hole edge of the more neatly. The main features of this species: ventral side of the handle area before the holiday wrinkle, no ridge into the platoon leader; mostly without Sam is a long tube net parasitic wasps.
Host: Beijing pea aphid, wheat aphid-free network, wheat aphid, Aphis gossypii.
Occurrence: occurs in 4-6 months, the better for pea aphid control.
Habitat: grassland type, often occurs in pea, alfalfa, wheat and weeds.
Distribution: Beijing, Hubei, Yunnan, Taiwan, Shaanxi; Japan, Central Asia, Europe |
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