Pterosticus? - Stenolophus fuliginosus - BugGuide.Net

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Copyright © 2020 Owen Strickland

Pterosticus? - Stenolophus fuliginosus

Toronto, Ontario, Canada
April 12, 2020
Size: 7.3mm

I'm wondering if this might be a small Pterosticus species, but the pronotum seems odd. I definitely haven't encountered this species before. Have specimen if more views are needed.

Contributed by Owen Strickland on 12 April, 2020 - 6:08pm

Stenolophus fuliginosus

This species has a harpaline habitus and characteristic dark femora (thighs) in stark contrast to pale tibiae. Owen, without a stereomicroscope you are at a great disadvantage. With a scope you would have seen on side of head one supraorbital (above eye) seta as in all harpalines versus two supraorbital setae as in all pterostichines. A scope plus Bousquet's 2010 key to genera would have gotten you there.

… Peter W. Messer, 12 April, 2020 - 6:42pm

Thank you

For the ID! I wish I had access to a microscope. I do at school, but because of Coronavirus I'm obviously at home. :)

… Owen Strickland, 12 April, 2020 - 7:00pm

Put a home stereomicroscope on your wish list.

There are just a few exceptions to the supraorbital setae rule noted above.

… Peter W. Messer, 12 April, 2020 - 8:12pm

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