Scientific Name: Callosobruchus analis (Fabricius)
Common Name: Pulse weevil
Synonyms
Bruchus analis Fabricius
Taxonomic Position
Class: Insecta
Order: Coleoptera
Family: Bruchidae
Genus: Callosobruchus
Species: Callosobruchus analis
Origin and Distribution
Algeria, Brazil, Burma, China, Egypt, India, Mauritius, Saudi Arabia
Host Range
Arbus precatorius, Acacia arabica, Cajanus cajan, C. indicus, Canavalia ensiformis, Cicer arietinum Crotolaria sp., Dolichos biflorus, D. cyprus, D. lablab, D. lablab var. lignosus, D. lablab var. typicus, Glycine hispida, Glycine max, Lathyrus sativus, Lens esculenta, Phaseolus aureus, P. aconitifolius, P. articulatus, P. calcaratus, P. lunatus, P. mungo, P. radiatus, P. vulgaris, Physostigma venenosum, Pisum sativum, Vicia faba, Vigna sinensis, V. catjang, V. sesquipedalis, V. sinensis, V. unguiculata, Voandzeia subterranean.
Pest Destructive Stage
Primary pest
Eggs –laid or stuck individually onto seed or pod
Larvae – immobile, concealed within seed
Adults – do not feed on commodity, fly readily
Damage symptoms
Damage is distinctive. As adult emerge from seeds they leave behind neat circular holes in the seed, behind which is a large cavity left by the larvae.
Identification features
Morphological Features: Males and females more or less similar; Antennae similar in the both sexes; Lateral black spots on each elytron separated by a band of white setae; pygidial median band of white setae present in both sexes.
Species Key: Body usually oval, ground colour of body pale yellow; Lateral black spots on the elytra indistinctly separated from the dull white Setae around them; pygidial Setae unicolorous, pale white in both sexes; Males and females more or less similar; Lateral black spots on elytra surrounded by white Setae in both sexes; saccus provided with a pair of Lateral toothed plates.
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Dorsal View
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Lateral View
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Pygidium
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Detection methods
Samples can be examined with naked eye or under magnifying glass or stereoscopic binocular microscope and by using soft X-ray and seed transparency method hidden infestation can be detected.