Gryllacrididae

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Gryllacrididae
Hyalogryllacris sp. fabricating silk
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Superfamily: Stenopelmatoidea
Family: Gryllacrididae
Blanchard, 1845
Subfamilies

Gryllacridinae
Lezininae

Gryllacrididae are a family of non-jumping insects in the suborder Ensifera occurring worldwide, known commonly as "leaf-rolling crickets" or "raspy crickets" and sometimes called "Wolf crickets". The family historically has been broadly defined to include what are presently several other families, such as Stenopelmatidae ("Jerusalem crickets") and Rhaphidophoridae ("camel crickets"),[1] now considered separate. As presently defined, the family contains two subfamilies, with the vast majority (over 90 genera containing over 600 species) in the subfamily Gryllacridinae.[2][verification needed] The remaining subfamily, Lezininae, contains only a single genus with 12 described species.[3][verification needed][4] They are commonly wingless and nocturnal. In the daytime, most species rest in shelters made from folded leaves sewn with silk. Some species use silk to burrow in sand, earth or wood.[5] Raspy crickets evolved the ability to produce silk independently from other insects, but their silk has many convergent features to silkworm silk, being made of long, repetitive proteins with an extended beta-sheet structure.[6]

These are predators of other insects and spiders.[7]

References[edit]

  1. ^ Desutter-Grandcolas, L. (2003). "Phylogeny and the evolution of acoustic communication in extant Ensifera (Insecta, Orthoptera)". Zoologica Scripta 32: 525–561. doi:10.1046/j.1463-6409.2003.00142.x. 
  2. ^ "Orthoptera Species File- Gryllacrididae". 
  3. ^ "Orthoptera Species File - Lezininae". 
  4. ^ Legendre, F., Robillard, T., Song H., Whiting, M. F. and Desutter-Grandcolas, L. (2010). "One hundred years of instability in ensiferan relationships". Systematic Entomology 35: 475–488. doi:10.1111/j.1365-3113.2009.00519.x. 
  5. ^ Rentz, D.C.F., John, B. (1990). "Studies in Australian Gryllacrididae: taxonomy, biology, ecology and cytology". Invertebrate taxonomy 3: 1052–1210. doi:10.1071/IT9891053. 
  6. ^ Walker AA, Weisman S, Church JS, Merritt DJ, Mudie ST, Sutherland TD. (2012). "Silk from Crickets: A New Twist on Spinning". PLoS ONE 7(2): e30408. doi:10.1371/journal.pone.0030408. PMC 3280245. PMID 22355311. 
  7. ^ [1]

External links[edit]

  • Lockwood, Jeffrey A. (January–February 2006). "The Nature of Violence". Orion Magazine.  Article discussing Gryllacrididae and its behavior