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Jayanti spider cricket

May 31, 2021
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Jayanti spider cricket
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In news- Jayanti has become the twelfth subgenus, or species, of cricket identified under the genus Arachnomimus Saussure, 1897. 

More about the insect-

  • It was found in the Kurra caves of Chhattisgarh in April 2021 by a team of zoologists of Panjab University, Chandigarh.
  • The new subgenus was named Jayanti after Professor Jayant Biswas, one of the leading cave explorers in the country, who assisted the team. 
  • Arachnomimus is the genus name given by Swiss Entomologist Henri Louis Frédéric de Saussure in 1878 to crickets that resembled spiders. 
  • The word Arachnomimus is derived from two Ancient Greek words arakhne means “spider” and mimos, means “imitator, actor”. 
  • The crickets of this group are commonly called spider crickets because of their smaller body size and long legs.
  • The newly discovered subgenus, Indimimus, is different from the two subgenera, Arachnomimus and Euarachnomimus because of the male genitalia structure.
  • Insects have a lock-and-key model genitalia structure which is unique to each subgenus. 
  • Male crickets produce loud sounds by rubbing their wings against each other to attract females. 
  • The females listen to these calls using ears located on their legs and approach the males for mating and reproduction.
  • But males of the new Jayanti subgenus cannot produce sound and their females don’t have ears. 
  • They may communicate by beating their abdomen or any other body part on the cave walls. 
  • Further studies on their skills of vibrational communication may help in designing hearing aids for humans which can capture quietest signals and amplify to an audible hearing range.
  • Though the distribution of these species is very wide, ranging from Brazil to Malaysia, in India, the diversity of spider crickets is still unexplored. 
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Source: Indian Express
Tags: Indian expressPrelims

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