Forbesís tree cricket
Oecanthus forbesi

Oecanthus forbesi and Oecanthus nigricornis are morphologically indistinguishable but separable on the basis of their calling songs. Dots show county records of O. forbesi that are based on tape-recorded males. East of the shaded area, tapes of males of nigricornis/forbesi morphology have proved to be O. nigricornis except for one record from eastern New York. West of the shaded area, no forbesi males have been taped.

Computer-generated distribution map, produced in 2004 from records in a database available on this site.