Jalysus spinosus

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera) » True Bugs (Heteroptera) » Pentatomomorpha » Lygaeoidea » Stilt Bugs (Berytidae) » Metacanthinae » Jalysus » Jalysus spinosus

Photo#103912

Copyright © 2007 Cotinis

Jalysus spinosus

Parkwood, Durham County, North Carolina, USA
April 14, 2007
Size: 9 mm

Found on a Dogwood (Cornus florida) flower. Captured and posed, measured. I made a specimen of it for anatomic detail shots. Identification confirmed by Slater's key (1). One characteristic of the key for the genus shown here is:

fourth segment of antenna longer than head

This is a common insect, but we have not had the detailed shots to date to verify the genus. North Carolina State University Entomology lists two species for this state, spinosus and wickhami, both quite common, so this is likely one or the other of those. I believe characters of male genitalia have to be used to differentiate them. Some of these are illustrated by Slater, but they don't match what I see on this specimen--it may be a female.

Images of this individual: tag all

Stilt bug scent gland channel - Jalysus spinosus

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Contributed by Cotinis on 18 April, 2007 - 11:55am
Last updated 23 May, 2015 - 1:32pm

Moved

Moved from spinosus or wickhami.

… Brad Barnd, 2 November, 2014 - 1:27am

spinosus vs. wickhami

Brad, I am finally getting through a backlog of e-mails from BugGuide!
Any summary of how you are differentiating spinosus vs. wickhami on this one?
Thanks!

… Cotinis, 23 May, 2015 - 1:39pm

Sure

The best way to tell them apart is to look at the male genital capsule: wickhami has a distinct ridge while spinosus does not. However, that is not usually, if ever, visible in photographs.

They also differ in that wickhami has a short stout tubercle on the frons while spinosus lacks a tubercle. Again, this is difficult to judge in photographs, sometimes even with specimen in hand.

Probably the only way to tell from photographs is by the punctures on the side of the head behind the eyes. In wickhami, the area is heavily punctate while in spinosus it is more of a narrow band. Lighting can sometimes make this hard to interpret in photos, but it can often be seen.

Compare the side of your Jalysus to MJ's at

… Brad Barnd, 23 May, 2015 - 10:10pm

Can this identification data

be copied to the genus Info page? It might help us to get better photos for ID. Thanks!

… Kimberlie Sasan, 18 September, 2018 - 5:55pm

Moved

Moved from Jalysus.

… v belov, 12 October, 2011 - 12:58pm

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