Oecanthus forbesi

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

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

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
• Video 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.