June 11, 2019

How to tell Rhodobaenus tredecimpunctatus and R. quinquepunctatus apart...

Ironweed Curculio versus Cocklebur Weevil

from borisb
tip of elytra black (extent variable) = Rhodobaenus quinquepunctatus
tip red = Rhodobaenus tredecimpunctatus

"black tip" in quinquepunctatus may be reduced to margin, leaving a subapical spot isolated. This form is a look-alike.
https://www.inaturalist.org/observations/26708814

Posted on June 11, 2019 15:07 by javiehweg javiehweg | 0 comments | Leave a comment

May 28, 2019

May 24, 2019

May 13, 2019

Catchweed vs Rough bedstraw

Catchweed has much narrower leaves, much more obovate (wide near the tip) than rough. Also rough almost never has more than 6 leaves in a whorl, catchweed usually does. In person catchweed is "grabbier" than rough, but that's subtle even if you have them side by side.

Posted on May 13, 2019 13:01 by javiehweg javiehweg | 0 comments | Leave a comment

May 09, 2019

Buttercup IDs

The side view on the flower is important because you need to see the sepals to ID. The sepals are still too hard to see here. Here are some websites with good descriptions for telling some of our buttercups apart:
http://www.acerecology.co.uk/buttercups/
https://lizzieharper.co.uk/2016/02/botanical-illustration-buttercup-species/

Hooked vs. R. abortivus from srall
So, I learned R. abortivus as "kidney leaved buttercup" and I think it's much more helpful, as R. abortivus only has kidney shaped basal leaves plus some usually undivided but at least very narrow stem leaves. These big, broad, three-parted leaves are never seen on R. abortivus. There are other Ranunculus that have this shape leaf, but R. recurvatus is the common one.

Posted on May 09, 2019 14:22 by javiehweg javiehweg | 0 comments | Leave a comment

April 22, 2019

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