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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Grasshoppers, Crickets, Katydids (Orthoptera) » Long-horned Orthoptera (Ensifera) » Crickets (Gryllidea) » True Crickets (Gryllidae) » Tree Crickets (Oecanthinae) » Common Tree Crickets (Oecanthus) » Nigricornis Group (Oecanthus Nigricornis Group) » forbesi vs nigricornis (Oecanthus forbesi vs nigricornis)
Photo#1316573
gryllid 2 - Oecanthus - male
Copyright © 2016 sh11

gryllid 2 - Oecanthus - Male
Mississauga, Peel Region, Ontario, Canada
August 17, 2016
Which Oecanthus sp.? Thank you in advance!
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Contributed by sh11 on 23 November, 2016 - 3:43pm
Last updated 25 November, 2016 - 9:05am

Moving this to nigricornis group
...but cannot say with 100% certainty whether it is O. nigricornis or O. forbesi. These are the most difficult species to separate. Believe it or not, this is most likely the same species as the darker female images posted from the same area in September. Only a recording of the male's song at a known ambient temperature allows one to say for certain which of the two species it is. Females cannot be ID'd by appearance = only by association with males. (O. nigricornis can be mostly green; forbesi can have a lot of deep black)

The extreme eastern U.S. is felt not to have O. forbesi.

Southern Ontario is close to Ohio - known to have both species.
… Wisconsin Oecanthinancy, 25 November, 2016 - 9:05am login or register to post comments

Moved
Moved from ID Request.
… Ken Wolgemuth, 23 November, 2016 - 4:14pm login or register to post comments

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