Identification keys of storage pest: Cowpea weevil- #Indiafoldscopephase 1
Nov 27, 2018 • 9:09 AM UTC
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Soumitra Banerjee
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Infestation found in : Horse gram
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Fig: Infested Horse gram pulse
Macrostructure image of infested pest:
Macrostructure image of infested pest:
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Fig: Infested pest found in Horse gram pulse
A ssumed pest: Cowpea weevil ( Callosobruchus maculatus )
Morphological characteristics (observed under foldscope)
Antenna is slightly serrate from the fourth through apical segment(Fig 1) Elytra with bristle like parallel lines along with hairs and with two black spots(Fig 2) Bears a tooth near the apical end of femur ridge and tarsus of the hind leg is composed of 4 segments(Fig 3) Hind wing with folding lines and has dot like cells between the lines( Fig 4)
A ssumed pest: Cowpea weevil ( Callosobruchus maculatus )
Morphological characteristics (observed under foldscope)
Antenna is slightly serrate from the fourth through apical segment(Fig 1) Elytra with bristle like parallel lines along with hairs and with two black spots(Fig 2) Bears a tooth near the apical end of femur ridge and tarsus of the hind leg is composed of 4 segments(Fig 3) Hind wing with folding lines and has dot like cells between the lines( Fig 4)
Fig. 1: Antennae of Cowpea weevil under foldscope
Fig. 2: Elytra of Cowpea weevil under foldscope
Fig. 3: Hind leg of Cowpea weevil under foldscope
Fig. 4: Hind wing of Cowpea weevil under foldscope
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