Bean Beetle
Related Category: Zoology: Invertebrates
common name for a destructive beetle, Epilachna varivestis, of the ladybird beetle family.
[94] Horizontal transfer of genes from bacteria to eukaryotes such as the yeast Saccharomyces cerevisiae and the adzuki bean beetle Callosobruchus chinensis may also have occurred.
Certain species are agricultural pests, such as the the red flour beetle Tribolium castaneum, the Colorado potato beetle Leptinotarsa decemlineata, or the mungbean beetle Callosobruchus maculatus Fabr.
There are about 5,000 different species of these insects, and not all of them have the same appetites. A few ladybugs prey not on plant-eaters but on plants. The Mexican bean beetle and the squash beetle are destructive pests that prey upon the ...
Not all of the nearly 6,000 species world-wide ladybug eat insects some eat pollen, others eat mold spores, while others have become farm nuisances, with the Mexican bean beetle damaging bean and alfalfa and squash lady beetle attacking squash plants.
Among others, they can be laid loose in the substrate (e.g. flour beetle), laid in clumps on leaves (e.g. Colorado potato beetle), or individually attached (e.g. mungbean beetle and other seed borers) or buried in the medium (e.g. carrot weevil).
For example, the grub of a pea or bean beetle (Bruchus) is hatched, from the egg laid by its mother on the carpel of a leguminous flower, with three pairs of legs and spiny processes on the prothorax.
 See also: Beetle, Aphid, Ladybug, Diver, Ladybird Beetle
  
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