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

TaxonomyBrowseInfoImagesLinksBooksData
Photo#573265
Male Orb Weaver - Araneus thaddeus - male

Male Orb Weaver - Araneus thaddeus - Male
Oregon, Ogle County, Illinois, USA
September 6, 2011
Size: 8mm

Images of this individual: tag all
Male Orb Weaver - Araneus thaddeus - male Male Orb Weaver - Araneus thaddeus - male Male Orb Weaver - Araneus thaddeus - male Male Orb Weaver - Araneus thaddeus - male Male Orb Weaver - Araneus thaddeus - male

Moved
Moved from Araneus.

A. pegnia?
A. pegnia or something similar would be my first thought.

 
A. pegnia?
Yes the pattern sure looks right. 8 mm is a bit large. They are supposed to be around 5 mm for the males. That's a pretty big size difference if the measurement wasn't a guess. From old comments I see that A. thaddeus males look pretty much the same. Here are some comments copied from image #467383

When reading Levi and comparing these two images (Levi says the males of these two species can't be separated by color pattern) I find one fairly easy way to tell these males apart (assuming the abdominal pattern will vary). Males of A. pegnia have shorter legs, with tibia II being shorter (2.9 mm) and thicker than that of A. thaddeus (3.7 mm). Also, A. thaddeus has a slight curve to tibia II.

Tibia II looks a little curved here doesn't it?

 
I'll buy the slight curve.
I'll buy the slight curve.

Moved
Moved from Lattice Orbweaver.

small male Araneus
Any females in the area?

 
Alas
No. I'll look again though.

Moved
Moved from Orb Weavers.

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