Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

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

denticulata/strigataria vein markings - Phigalia - male

denticulata/strigataria vein markings - Phigalia - Male
Paulding County, Georgia, USA
This is an image I quickly put together to illustrate one of the primary differences between denticulata and strigataria as discussed here, in which I noted that:

"In denticulata, a very distinct dark “tooth” is located on the M1 vein where it comes off of the discal cell. This is seen as the “3rd tooth” from the costa, evenly spaced along the PM line of denticulata. In strigataria, this marking is either absent (giving the appearance of a gap between two pairs of “teeth”) or greatly reduced to only being a diffuse black spot."

Research in conjunction with genetically identified specimens thus far indicates this characteristic is likely diagnostic, but of course any new data could change that at any time.

Update: I have come across a few denticulata specimens since posting this, which exhibit darker or grainy shading in the postmedian area that also have a greatly reduced (appears nearly absent) 'tooth' along vein M1. In these 3 specimens, the 'tooth' in question was almost imperceptible, with only scant dark scaling along vein M1 where the 'tooth' should be. However, so far, no strigataria specimens exhibit the M1 vein 'tooth' at all. So there are some specimens of denticulata which may pose a challenge.

Thank you

very helpful thank you !

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.