28 de outubro de 2022

Unidentified Gulf Condylostylus sp.

There is a species of tropical Condylostylus extending into Florida that we currently don't know the name of. This species can be recognized from the tealish-green color, sharp bend in M1, brown fore and mid tibia with black hind tibia, all femora dark, etc. Here I will accumulate links for photos of this species.

Carribean/Bahaman observations:
https://www.inaturalist.org/observations/20047571
https://www.inaturalist.org/observations/20075551 (possibly)
https://www.inaturalist.org/observations/72509817
https://www.inaturalist.org/observations/41937232

Mexican observations:
-Lucy-
https://www.inaturalist.org/observations/134104902
https://www.inaturalist.org/observations/134444882
https://www.inaturalist.org/observations/126853740
https://www.inaturalist.org/observations/126101339
https://www.inaturalist.org/observations/102241566
https://www.inaturalist.org/observations/92465548
https://www.inaturalist.org/observations/85337440
https://www.inaturalist.org/observations/69773315
https://www.inaturalist.org/observations/107977833
-End of Lucy-
https://www.inaturalist.org/observations/138858136
https://www.inaturalist.org/observations/133999289
https://www.inaturalist.org/observations/104987781
https://www.inaturalist.org/observations/37575965
https://www.inaturalist.org/observations/120044631
https://www.inaturalist.org/observations/138334609
https://www.inaturalist.org/observations/93734910 - okay photo, looks like a female, might not be this species
https://www.inaturalist.org/observations/98704649
https://www.inaturalist.org/observations/123869587
https://www.inaturalist.org/observations/141490334

Floridian observations:
https://www.inaturalist.org/observations/18763177 - very clear shots, not very good angles, though
https://www.inaturalist.org/observations/83677473
https://www.inaturalist.org/observations/107515948
https://www.inaturalist.org/observations/49370338
https://www.inaturalist.org/observations/31063441
https://www.inaturalist.org/observations/130867536
https://www.inaturalist.org/observations/98501717
https://www.inaturalist.org/observations/66482722
https://www.inaturalist.org/observations/137115889
https://www.inaturalist.org/observations/133772420
https://www.inaturalist.org/observations/117931498
https://www.inaturalist.org/observations/138545323
https://www.inaturalist.org/observations/101010265
https://www.inaturalist.org/observations/101271991
https://www.inaturalist.org/observations/27581519
https://www.inaturalist.org/observations/105078852
https://www.inaturalist.org/observations/19196759
https://www.inaturalist.org/observations/136479125
https://www.inaturalist.org/observations/31618300
https://www.inaturalist.org/observations/2705041
https://www.inaturalist.org/observations/107352240
https://www.inaturalist.org/observations/108298555
https://www.inaturalist.org/observations/37716681 - good photos
https://www.inaturalist.org/observations/32719156
https://www.inaturalist.org/observations/32539305 - good frontal photo
https://www.inaturalist.org/observations/35631718
https://www.inaturalist.org/observations/37040940
https://www.inaturalist.org/observations/111779156
https://www.inaturalist.org/observations/104433080
https://www.inaturalist.org/observations/109330847
https://www.inaturalist.org/observations/20427908
https://www.inaturalist.org/observations/140700449
https://www.inaturalist.org/observations/111019605
https://www.inaturalist.org/observations/141434862
https://www.inaturalist.org/observations/62453254
https://www.inaturalist.org/observations/70368963 - really good shot
https://www.inaturalist.org/observations/132324091
https://www.inaturalist.org/observations/99129433 - good dorsal shot
https://www.inaturalist.org/observations/61669412
https://www.inaturalist.org/observations/58435592 - shows the chaetotaxy very well
https://www.inaturalist.org/observations/27624165
https://www.inaturalist.org/observations/139158419
https://www.inaturalist.org/observations/116376976
https://www.inaturalist.org/observations/36006723
https://www.inaturalist.org/observations/140129592
https://www.inaturalist.org/observations/30441534
https://www.inaturalist.org/observations/142038946
https://www.inaturalist.org/observations/137590986
https://www.inaturalist.org/observations/142038952 - maybe
https://www.inaturalist.org/observations/113059199 - pretty good photos
https://www.inaturalist.org/observations/116376981
https://www.inaturalist.org/observations/116376968
https://www.inaturalist.org/observations/141204182
https://www.inaturalist.org/observations/29887658 - not great photos, but shows male and female in the same photo
https://www.inaturalist.org/observations/139431902 - decent dorsal
https://www.inaturalist.org/observations/138495876
https://www.inaturalist.org/observations/66879339
https://www.inaturalist.org/observations/32586393
https://www.inaturalist.org/observations/39669006
https://www.inaturalist.org/observations/139142266
https://www.inaturalist.org/observations/18704956
https://www.inaturalist.org/observations/33272823 - good dorsal
https://www.inaturalist.org/observations/69505614 - unusual coloration
https://www.inaturalist.org/observations/139454696
https://www.inaturalist.org/observations/36518869 - pretty sure
https://www.inaturalist.org/observations/39195225
https://www.inaturalist.org/observations/106677945 - very good photos
https://www.inaturalist.org/observations/69943584
https://www.inaturalist.org/observations/31192916
https://www.inaturalist.org/observations/142535246 - voucher
https://www.inaturalist.org/observations/101847360
https://www.inaturalist.org/observations/47735542
https://www.inaturalist.org/observations/5762428
https://www.inaturalist.org/observations/17367244

Elsewhere:
https://www.inaturalist.org/observations/140897916

Females:
https://www.inaturalist.org/observations/66482704 - possibly
https://www.inaturalist.org/observations/142038944
https://www.inaturalist.org/observations/142451530
https://www.inaturalist.org/observations/33272822
https://www.inaturalist.org/observations/114082989
https://www.inaturalist.org/observations/142535245 - voucher

Publicado em 28 de outubro de 2022, 01:52 AM por zdanko zdanko | 0 comentários | Deixar um comentário

22 de outubro de 2022

Marked Wing Condylostylus

There are three species of Condylostylus that we don't have a lot of information on, and that are very similar. They are C. inornatus, C. quadricolor, and C. leonardi. All three differ from other marked wing species by having the fore tibiae yellow. Here I will be adding information and accumulating links to possible and confirmed observations.

C. inornatus

Unlike the other species, the mid tibia is dark.
Confirmed observations:
https://www.inaturalist.org/observations/93545891

C. quadricolor

Unlike C. leonardi, the hind tarsal segments steadily decrease in length, and the border of the green-black areas on each tergite is diffuse.
Confirmed observations:
https://www.inaturalist.org/observations/123902280
https://www.inaturalist.org/observations/123182305
https://www.inaturalist.org/observations/115937086
https://www.inaturalist.org/observations/109613622
https://www.inaturalist.org/observations/106406506
https://www.inaturalist.org/observations/93687482
https://www.inaturalist.org/observations/84493302
https://www.inaturalist.org/observations/74010927
https://www.inaturalist.org/observations/39780304

Likely, based on range:
https://www.inaturalist.org/observations/77148364
https://www.inaturalist.org/observations/20934981
https://www.inaturalist.org/observations/138153856
https://www.inaturalist.org/observations/129845812
https://www.inaturalist.org/observations/73957125
https://www.inaturalist.org/observations/123017348
https://www.inaturalist.org/observations/18872833

C. leonardi

Unlike C. quadricolor, the last three hind tarsal segments are all subequal in length, and the border of the green-black areas on each tergite is sharp.
Confirmed observations:
https://www.inaturalist.org/observations/133698570
https://www.inaturalist.org/observations/133860943
https://www.inaturalist.org/observations/120273319
https://www.inaturalist.org/observations/105136835
https://www.inaturalist.org/observations/36996072
https://www.inaturalist.org/observations/133712421

Likely, based on range:
https://www.inaturalist.org/observations/133635244
https://www.inaturalist.org/observations/92814269
https://www.inaturalist.org/observations/93199299

Females

of C. quadricolor and C. leonardi are distinct from females of the C. sipho group in that they have a dark posterior area on the hind femora.
Observations:
https://www.inaturalist.org/observations/120273316
https://www.inaturalist.org/observations/123320254
https://www.inaturalist.org/observations/60385421
https://www.inaturalist.org/observations/115995861
https://www.inaturalist.org/observations/106406502
https://www.inaturalist.org/observations/128160949
https://www.inaturalist.org/observations/76041141
https://www.inaturalist.org/observations/121393367
https://www.inaturalist.org/observations/64223604
https://www.inaturalist.org/observations/96330119
https://www.inaturalist.org/observations/115414488
https://www.inaturalist.org/observations/76968353
https://www.inaturalist.org/observations/91027484

Publicado em 22 de outubro de 2022, 11:31 PM por zdanko zdanko | 3 comentários | Deixar um comentário

29 de agosto de 2022

31 de julho de 2022

02 de março de 2022

09 de agosto de 2021

Rearing Homopteran-Predatory Syrphid Larvae

My experience with rearing Syrphids is limited to aphid-eating predators. For information about rearing larvae that don't feed on aphids, refer to Rotheray, 1993 (see footnote*).


With the assistance of @edanko, I have reared three Syrphine species: Allograpta obliqua, Eupeodes americanus, and Syrphus knabi. All three of the genera predate on aphids. Here's how I went about it:

First, put the larva in a small, preferably plastic, container. You can choose to put a layer of paper towel on the bottom right now if you wish. Put a layer of paper towel covering the opening of the container, and attach with a rubber band.

Next, you'll want to find a healthy colony of aphids to harvest from. If possible, it's preferable to take from the colony you found the larva on. Every morning and every evening, depending on how fast your larva eats, take a leaf of aphids and put it in the container with the larva. This worked for me, but I'm sure there are more efficient ways of doing that.

Once the larva pupates, if you didn't already, put paper towel on the bottom of the container so it doesn't roll around. Now, all you have to do is wait. Check on the pupa throughout the days to see if the fly has emerged. Once it has, your time to photograph it is limited.

My method to photograph is to put the container in a large ziploc bag, and push the lens through the opening of the bag, leaving as little space as possible for the fly to escape. Hopefully, at this point it's recently eclosed, so it won't fly that much.

Once you have the necessary photos, you can try, if you're confident enough, to get the fly on your finger or another rigid object, and carry it outside. There, you can get better photos with nice lighting, and once the fly is ready, it can leave your finger and fly away.


Thanks for reading! I hope this is helpful. If you have any ideas or suggestions, please leave them in a comment or message me so I can edit this post. This is somewhat of a wiki, as I want this to be a good resource for rearing predatory Syrphids. See comments below from other people with experience in this for some more tips.

*(See p. 26: https://diptera.info/downloads/df_1_9_Colour_Guide_to%20Hoverfly_Larvae.pdf)

Publicado em 09 de agosto de 2021, 03:29 PM por zdanko zdanko | 19 comentários | Deixar um comentário

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