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

Calendar
Upcoming Events

National Moth Week photos of insects and people. Here's how to add your images.

Photos of 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


TaxonomyBrowseInfoImagesLinksBooksData
Photo#1848109
Sesiidae, stem swellings on Aspen, Dusky Clearwing - Paranthrene tabaniformis

Sesiidae, stem swellings on Aspen, Dusky Clearwing - Paranthrene tabaniformis
Hayden Prairie, Howard County, Iowa, USA
June 9, 2020
June 8, 2020: Larry Reis, WCCB Naturalist, led a small group of enthusiastic folks (Harmony Garden Club) on a meander through Hayden Prairie. There were insects and sign of insects to be seen. (oh yes, plants too.) The area where we spent the most time has a lot of Quaking Aspen, Populus tremuloides, and a lot of those Aspens had stem swellings. I cut a few (permit issued by Iowa DNR, Thank You) to see if something might emerge.

June 9, 2020: cut open a couple of stems to hollowed out areas and frass but nothing else.

Happy 4th of July: the container with the stems (and some Creeping Charlie galls, Liposthenes glechomae) had way too much moisture which needed to be wiped out. Opened the lid to find a wasp that just didn't look like the Creeping Charlie wasp. Also noted a spent pupa sticking out of an Aspen stem which looked like a lep pupa. (still didn't get what was going on) Taking photos of the wasp I realized that I had been duped, it was a Clearwing Moth. First I submitted a photo to Jim Durbin's Moth Identification Site then checked BG. It's the non-native Dusky Clearwing Moth which feed on Populus.

Question: is there any evidence that these larvae, in abundance, will impact the Aspens? Sure would be good.

Images of this individual: tag all
Sesiidae, stem swellings on Aspen, Dusky Clearwing - Paranthrene tabaniformis Sesiidae, stem swelling(s) on Aspen, Dusky Clearwing - Paranthrene tabaniformis Sesiidae, stem swelling(s) on Aspen, opened, Dusky Clearwing - Paranthrene tabaniformis Sesiidae, Dusky Clearwing, lateral - Paranthrene tabaniformis Sesiidae, Dusky Clearwing, frontal - Paranthrene tabaniformis Sesiidae, Dusky Clearwing, dorsal - Paranthrene tabaniformis Sesiidae, Dusky Clearwing, ventral - Paranthrene tabaniformis Sesiidae, Dusky Clearwing, spent pupa - Paranthrene tabaniformis