"The best way to tell [the two] apart is to look at the male genital capsule: J. wickhami has a distinct ridge while J. spinosus does not. However, that is not usually visible in photographs. They also differ in that J. wickhami, unlike J. spinosus, has a short stout tubercle on the frons. 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." (Brad Barnd/BugGuide)
There are 2 records in the project database.
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