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Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

Confusion regarding Chauliodes rastricornis and C. pectinicornis

On the page describing Chauliodes rastricornis, http://bugguide.net/node/view/8569, it states


Compare C. pectinicornis. Head and pronotum have dark markings on light brown background, as opposed to yellowish markings on dark brown background of C. pectinicornis. Antennae of female serrate, of male, pectinate. So, apparently, a Chauliodes with serrate antennae should be a female C. rastricornis. Note earlier flight (spring) of rastricornis in most of east. C. pectinicornis typically flies in summer.

Yet the ones with the yellow markings are all ID'd as C. rastricornis. I am thoroughly confused. Which is which?

Chauliodes
Can you point to some photos you feel are misidentified? The photos in in the post by Cotinus are correctly identified and show the important markings, those on the head. The two large rectangular areas at the back of the head should be dark for C. rastricornis and yellowish for C. pectinicornis. The female for C. rastricornis is easy to ID because of the serrate (i.e., not pectinate) antennae.

 
not seeing many bad ID's
I did not see any incorrect ID's on a quick look, but sorry, I do not have the time right now to go through our many images. Your comments above on the head markings and the antennae sound correct. These can be difficult to see unless the exposure on the photo is just right.

clarification, perhaps
Hmm. I think I wrote this somewhat confusing language some years ago! There are yellow markings on C. rastricornis, but I was referring to the strong dark dashes on the head and pronotum, for instance, here:

Here is a pectinicornis with the yellowish curlicue markings on the pronotum, especially:


The genus guide page has some more details on separation of the two species. I hope this helps.

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