09 de abril de 2022

07 de abril de 2022

Cabrillo Tide Pool IDs

Here's just some links I found while trying to ID snails...

CA tide pools: http://californiatidepools.com/snails/
Management plan that includes species list: https://escholarship.org/content/qt4c57b1bc/qt4c57b1bc.pdf?t=p4tdhi
Document put together by the park: https://www.nps.gov/cabr/learn/intertidal-field-guide.htm

Anotado en 07 de abril de 2022 a las 10:33 AM por javiehweg javiehweg | 0 comentarios | Deja un comentario

05 de abril de 2022

Black Knot - never knew

A. morbosa only grows on Prunus species. Apparently...
So if it looks like black knot but is on something else... what is it?

Anotado en 05 de abril de 2022 a las 12:52 PM por javiehweg javiehweg | 0 comentarios | Deja un comentario

24 de septiembre de 2021

Ichneumonid vs. Braconid - Now I finally get it!

You'd think I would have gotten around to looking this info up sooner but here it is. I knew it had to do with the wing venation but not the specific to look for. So, taking pics, try to get good ones of the wings. The hind wing is nearly impossible when they are landed but if possible, seems like the better determinant.

Ichneumonids are distinguished from their sister group Braconidae mainly on the basis of wing venation. The fore wing of 95% of ichneumonids has vein 2m-cu (in the Comstock–Needham system), which is absent in braconids. Vein 1rs-m of the fore wing is absent in all ichneumonids, but is present in 85% of braconids. In the hind wing of ichneumonids, vein rs-m joins Rs apical to (or rarely opposite) the split between veins Rs and R1. In braconids, vein rs-m joins basal to this split. The taxa also differ in the structure of the metasoma: about 90% of ichneumonids have a flexible suture between tergites 2 and 3, whereas these tergites are fused in braconids (though the suture is secondarily flexible in Aphidiinae).

https://www.inaturalist.org/taxa/47199-Ichneumonidae

Anotado en 24 de septiembre de 2021 a las 02:21 PM por javiehweg javiehweg | 0 comentarios | Deja un comentario

07 de abril de 2021

Veronicas, ugh! Grey field vs Bird's Eye vs Slender

They are tough, and there's also V. filliformis, though it's much less common. V. polita has hairs on the stems that are spreading and noticiably a mix of lengths. That's probably definitive.

Generally, V. persica flowers are nearly as large as the leaves, or at least as wide as the leaves, or more than 0.5 cm. V. polita flowers are definitely smaller than the leaves, not as wide as most of the leaves, and under 0.5 cm. V. persica has much longer flower stems, easily longer than the length of a leaf. V. polita stems tend to be shorter and they don't stick out a whole lot above the leaves.

Both of those have leaves clearly longer than wide and fairly densly bunched. If you find something similar with tiny, roundish leaves well spread out along the stem and flower stems like 4 times as long as the little leaves you probably have V. filiformis.

from srall on post by michaelmorris

Anotado en 07 de abril de 2021 a las 04:24 PM por javiehweg javiehweg | 2 comentarios | Deja un comentario

11 de junio de 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

Anotado en 11 de junio de 2019 a las 03:07 PM por javiehweg javiehweg | 0 comentarios | Deja un comentario

28 de mayo de 2019

24 de mayo de 2019

13 de mayo de 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.

Anotado en 13 de mayo de 2019 a las 01:01 PM por javiehweg javiehweg | 0 comentarios | Deja un comentario

09 de mayo de 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.

Anotado en 09 de mayo de 2019 a las 02:22 PM por javiehweg javiehweg | 0 comentarios | Deja un comentario