Onomarchus (genus)

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Onomarchus
Onomarchus uninotatus from the Western Ghats of India
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Family: Tettigoniidae
Subfamily: Pseudophyllinae
Genus: Onomarchus
Stål, 1874

Onomarchus is a genus of true katydids found mainly distributed in the tropical forests of Asia. Like many other members of the subfamily Pseudophyllinae, their wings appear very leaf-like.

Detail of wing of O. uninotatus

A study of O. uninotatus found it to produce sounds at an unusually low frequency of about 3.5 kHz. The tympanal membrane cuts out high frequencies unlike the sound filters found in other Tettigoniids.[1]

The species in the genus include

  • Onomarchus bisulcatus Ingrisch & Shishodia, 1998[2]
  • Onomarchus cretaceus (Serville, 1838)
  • Onomarchus leuconotus (Serville, 1838)
  • Onomarchus philippinensis Weidner, 1965
  • Onomarchus uninotatus (Serville, 1838)[3]

References

  1. Rajaraman, K; N Mhatre; M Jain; M Postles; R Balakrishnan & D Robert (2012). "Low pass filters and differential tympanal tuning in a paleotropical bushcricket with an unusually low frequency call". Journal of Experimental Biology. doi:10.1242/jeb.078352. 
  2. Ingrisch, S & MS Shishodia (1998). "New species and records of Tettigoniidae from India (Ensifera)". Bulletin de la Societe Entomologique Suisse 71: 355–371. 
  3. DeJong, C (1946). "A new variety of Onomarchus from British India (Orthoptera, Tettigoniidae)". Zool. Meded. 26: 268–27O. 

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