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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) » Black-horned Tree Cricket (Oecanthus nigricornis)
Photo#833199
Oecanthus nigricornis - male
Copyright © 2013 metrioptera

Oecanthus nigricornis - Male
Kennebunk Plains, Kennebunk, York County, Maine, USA
August 29, 2013
Found singing in tall grass in a field full of O. quadripunctatus. This should be O. nigricornis/forbesi.

Images of this individual: tag all
Oecanthus nigricornis - male Oecanthus nigricornis - male
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Contributed by metrioptera on 30 August, 2013 - 3:13pm
Last updated 27 April, 2014 - 7:53pm

Given this was found in Maine....
I'm pretty confident it is O. nigricornis. But you are correct, it is difficult to separate these two species by appearance alone.
… Wisconsin Oecanthinancy, 30 August, 2013 - 6:42pm login or register to post comments

 
nigricornis/forbesi
I've found 2 similar ones in the past that were placed in O. forbesi:

Given that they were both in Maine, shouldn't they be more likely O. nigricornis?
… metrioptera, 30 August, 2013 - 7:11pm login or register to post comments

 
Yes
Yes, all the O. forbesi and O. nigricornis images need to be reviewed to be moved based on location alone. [Even that is guessing since ranges are expanding and tree crickets don't get as much attention as other bugs thus their exact ranges are uncertain].

I just learned this summer from a researcher who spent 3 summers collecting tree crickets for her PhD - that these 2 species can ONLY be ID'd by song pulse rates at given temperatures. Their colors vary greatly, but vary in the same manner for both species. I have also started a separate area to put any O. forbesi vs O. nigricornis that both occur in an area.

I'm hoping to do this over the winter.
… Wisconsin Oecanthinancy, 30 August, 2013 - 8:14pm login or register to post comments

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