Classification of bean bruchid
What is the classification of a bean weevil?
Insects are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body, three pairs of jointed legs, compound eyes and one pair of antennae.
What is bean Bruchid?
The bean bruchid (Acanthoscelides obtectus), also known as the dry bean weevil, is a major pest of common bean and lima bean, and also cowpea. While the bean bruchid is primarily known as a storage pest of grain legumes, it starts attacking the pod while the crop is still in the field.
What are the characteristics of bean weevil?
Bean weevils are generally compact and oval in shape, with small heads somewhat bent under. Sizes range from 1 to 22 mm for some tropical species. Colors are usually black or brown, often with mottled patterns. Although their mandibles may be elongated, they do not have the long snouts characteristic of true weevils.
What is the scientific name of a bean weevil?
What are the economic importance of beans weevil?
Economic importance: A significant pest of legumes, especially beans, in some parts of the world, attacking crops in the field and in warehouses. It may reduce yields by 60%. Due to feeding inside seeds, it may not be noticed until much of the crop is infested.
What is the life cycle of bean weevil?
Life cycle
Bean weevils develop and feed upon leguminous plants. Adult bean weevils hibernate inside the seeds or seed pods of these plants. Adults emerge from hibernation in April to mate. Female bean weevils lay eggs onto seed pods, or into them by chewing holes, in groups of 2 to 20 eggs.
What is the mode of nutrition of bean weevil?
Adult female bean weevils do not feed on beans but deposit their eggs on whole beans or seeds. Beans provide nutrition for developing larvae that eat their way into beans. When bean larvae pupate, they emerge through exit holes as adults.
What is the scientific name of beans?
Where can we find bean weevil?
Infestations of cowpea weevils, broad bean weevils, and bean weevils can originate from adults moving to bean fields from trash beans left in sacks, harvesters, planters, or feed areas. In addition to being field pests, the cowpea and bean weevils are also serious storage pests, damaging dried beans after harvest.
What is the common name of Callosobruchus chinensis?
Although it is commonly known as the adzuki bean weevil it is in fact not a true weevil, belonging instead to the leaf beetle family, Chrysomelidae. Other common names include the pulse beetle, Chinese bruchid and cowpea bruchid.
What eats broad bean leaves?
Pea and bean weevils
Pea and bean weevils are beetles that eat the leaf margins and shoot tips of garden peas and broad bean, causing characteristic notch-like damage.
How long is Callosobruchus chinensis life cycle?
Whereas, the length and breadth (mm) of adult male and female bruchids were 3.87 ± 0.08, 2.07 ± 0.05 and 4.23 ± 0.14, 2.31 ± 0.07 respectively. The total life cycle of C. chinensis ranged from 33-42 days.
What is the taxonomic classification of Callosobruchus Maculatus?
Where are Callosobruchus Maculatus found?
Bean beetles, Callosobruchus maculatus (Coleoptera: Chrysomelidae: Bruchinae), are agricultural pest insects of Africa and Asia that presently range throughout the tropical and subtropical world. This species also is known as the southern cowpea weevil.
How can groundnut Bruchid be controlled?
Management. Drying the pods to less than 10% moisture before storing. No live insect pests are present in the produce or in the storage areas. Spraying the bags with pods with DDVP (Nuvan) at 2 ml/ liter of water or dusting with 5% Malathion.
What is economic importance of Callosobruchus maculatus?
Economic Importance of Callosobruchus maculatus Fab
Females lay eggs on seed coat and larvae develop exclusively inside the seeds, at the expense of grain endosperm and embryo, and are responsible for cowpea damage.
What is cowpea Bruchid?
The cowpea bruchid, Callosobruchus maculatus (F) (Coleoptera: Bruchidae), is a major pest of cowpea as the larval stage attacks stored cowpea grains, causing postharvest loss. Cowpea bruchid larvae spend all their time feeding within the cowpea seed.
Why do we study bean beetles?
In addition to their use in teaching, bean beetles are widely used as a model system in evolutionary biology research, which allows students to connect the research that they are doing in their laboratory courses with research in the field. Bean beetles are tropical and subtropical agricultural pest insects.
What is the life cycle for Callosobruchus Maculatus?
Callosobruchus maculatus is a holometabolic insect with life stages including egg, larva, pupa, and adult. Callobruchus maculatus adults are polymorphic with two morphs, i.e., a sedentary or flightless morph and a flight or dispersal morph.
What are economic importance of termites?
The economic importance of termites extends to mineral exploration, particularly in regolith-dominated terrain, where mineral deposit haloes have been masked by exotic and redistributed weathered materials.