Examups – Boost Your Exam Potential
Distribution and status: World – wide Host range: •Serious past of Cabbage and cauliflower, but also feeds on other crucifers and solanaceous plants. •Damage by caterpillar Damage symptoms •First instar larvae mine epidermal surface of leaves producing typical white patches. Larvae, second instar onwards feed externally making holes on the leaves and soil them with…
•Serious peat of cabbage, cauliflower, knol-knol, & also attack on turnip, radish, sarson, toria, and other cruciferous plant. •Damage caused by caterpillaer only. Identifaction •Larva : pale yellow, and become greenish yellow later on •Buterfly are pale white and smoky shade on dorsal side of the body. • Life cycle Damage •The caterpillar alone cause…
—Distribution and status: Countrywide distribution —Host range: Ber —Make cavities in the skin of fruit & lay 1-2 spindle shaped creamy white egg. Damage symptoms —Maggots feed on fruit pulp that results in fruit rotting and fruit drop. Bionomics —Female lays 22 eggs in cavities made on the fruit by ovipositor, egg period 2-3…
Distribution and status : •India, Bangladesh, Malaysia, Thailand, Burma, Srilanka, Laos, South Africa, Congo. It is a major and regular pest of brinjal causing damage to even 30 -50% of fruits or more. Host range : Brinjal, potato, other wild plants belonging to solanaceae, peas Damage •Larva bores into tender shoots and causes withering of…
Introduction •Distribution and status: Widely distributed in Myanmar, Sri Lanka, India, Arabia and East Africa. •Host range: Crucifers, rice, sugarcane, indigo and coffee •Damage caused by : Nymph & Adult Identification •Nymph : size 4 x 2.66 mm, black with number of brown marking. •Adult : size 3.71 x 3.33 mm, sub-ovate, black & have…
Introduction •Host plant : mustard, toria, rapseed, cabbage, cauliflower, knol-knol, turnip, radish, etc. •Damage caused by : larvae Identification •Larvae : -Dark green, have 8 pairs of abdominal prolegs. -5 black stripes on the back, 16-18 mm length •Adult : – small, orange yellow with black markings on the body, have smoky wing with black…
Introduction •Distribution and status: Distributed worldwide and is a serious pest •Host range: Cruciferous oilseeds like toria, sarson, raya, taramira and Brassica vegetables like cabbage, cauliflower, knol-khol. •Damage by : nymphs & adult Identification of the pest •Aphids: are small, soft-bodied, pearl-shaped insects that have a pair of cornicles (wax-secreting tubes) projecting out from the…
Introduction •Damage caused by : Caterpillar Identification •Larvae : – full-grown 25-30 mm length, reddish brown, with black blotches all over the body •Adult – Moths are orange yellow with black spot Life cycle Damage •Capsule with bore holes •Damaged capsules webbed together •Peduncle and capsules showing galleries made of silk and frass Management •Spray…
•Serious pests •Distribution and status: India, Africa, Argentina, Chile, U.S.A. Europe and Australia. •Host Plants: Groundnut, beans, safflower, lablab, niger, peas, pulses and some weeds. •Vector of virus disease known as the rossette of groundnut. Symptoms of damage • • Wilting of tender shoots during hot weather • Stunting and distortion of the…
Introduction •Distribution and status: India, Pakistan, Sri Lanka, Thailand, Laos, Malaysia, Philippines. •Host range: Castor, rose, pomegranate, tea, citrus, mango, Cadiospermum helicacabum Identification •Larva: semilooper with varying shades of colour with black head. Abdomen has a red spot on the third abdominal segment and red tubercules in the anal region • •Adult: pale reddish brown…