Journal archives for April 2023

April 5, 2023

Enallagma signatum Swarms - April 02, 2023

I wanted to make note of the fact that on April 2, 2023, there were swams of 20 to 30 Orange Bluets (Enallagma signatum) hovering over the streams at the edge of the swamp. I went to three streams and each stream had a swarm. This was early afternoon (1 to 2 PM) and the swarms were always located at the edge of the swamp where the forested part ended and the cutover began, so they were in a sunnier area but not completely out in the open since there are a few trees (onsie-twosies) located in and at the edge of the streams. I could only get to the first 3 streams, but for all I know, there were swarms at every stream (there are 6 to 7 streams).

At the second streams, I observed a hapless female E. signatum fly out about a foot from the bank and all the males dashed towards her. The guy who got there first swept her away--I didn't see where the pair went. The rest of the males went back to hovering over the center of the stream.

The males made occasional darts at each other jockeying for position but for the most part, they just hovered about a foot over the surface of the stream.

I don't think I've ever seen so many Orange Bluets in my life. I tried to photograph some of the Orange Bluets hovering over the stream but was not particularly success, although I did get some photographs of them when they perched in the vegetation along the banks of the streams.

Posted on April 5, 2023 02:27 PM by amypadgett amypadgett | 6 observations | 0 comments | Leave a comment

April 18, 2023

Fly key and guide

Thanks to @trinaroberts for this tip:
If you're interested in learning more, take a look at the ID guides and keys at https://sites.google.com/view/flyguide/species-guides/syrphidae. The key to genera of Eristalini and then species in this genus should get you to this ID.

Posted on April 18, 2023 01:52 PM by amypadgett amypadgett | 1 observation | 0 comments | Leave a comment

Why this ID

I've been too quick to glance at a photo and think I have the right identification lately when in fact, I didn't look closely enough and got the identification incorrect. This really annoys me because most of the time, it's an obvious or just silly mistake.

So to try to avoid this in the future, I'm going to try to exert more discipline and write out in the comments why I selected the specific identification. This may force me to take a better look at the photos to pick out exactly the traits which support my identification.

This slows the process down greatly but perhaps it will improve my accuracy. (And prevent me from doing things like adding a photo of a baskettail dragonfly to an observation with a photo of a Gray-green Clubtail. Doh. Or identifying what was clearly an Eastern Pondhawk as a Great Blue Skimmer. Another doh moment.)

Onwards and upwards.

Posted on April 18, 2023 02:19 PM by amypadgett amypadgett | 0 comments | Leave a comment

Gracias al apoyo de:

¿Quiere apoyarnos? Pregúntenos cómo escribiendo a snib.guatemala@gmail.com