Oecanthus forbesi

Oecanthus forbesi, the Forbes' tree cricket, is a species of tree cricket in the family Gryllidae.[2] It is found in North America.[3]

Oecanthus forbesi
Female
Male
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Ensifera
Family: Gryllidae
Genus: Oecanthus
Species:
O. forbesi
Binomial name
Oecanthus forbesi
Titus, 1903[1]

Description

This species has a yellowish head with black markings on the first two antennal segments.[4]

O. forbesi is very similar to O. nigricornis. The two species can be reliably separated only by the pulses per second (p/sec) of the male's song.[5]

The male sings by stridulation, and the p/sec increases with temperature.[6] The song of the male below was measured at 55-56 p/sec in temperature of about 15 degrees Celsius (°C).

  • Photo of male stridulating
  • Sonograph of male stridulating

References
  1. Titus, E. S. G. (1903). "A new Oecanthus from Illinois. [Oecanthus forbesi]". Can. Entomol.: 260–261.
  2. "Forbes' Tree Cricket (Oecanthus forbesi)". iNaturalist.
  3. "species Oecanthus forbesi Titus, 1903". Orthoptera Species File Online.
  4. "Forbe's Tree Cricket - Oecanthus forbesi". Montana Field Guide. Montana Natural Heritage Program.
  5. "Species Oecanthus forbesi - Forbes' Tree Cricket". BugGuide. Iowa State University.
  6. "Forbes's tree cricket Oecanthus forbesi Titus 1903". Singing Insects of North America.
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