Päiväkirja-arkisto kohteelle lokakuu 2019

lokakuu 5, 2019

Identifying Syrphus Hover Flies of North America

Work in progress

  • Before trying to identify a Syrphus to species, make sure it is not a similar genus such as Eupeodes, Epistrophe, Parasyrphus, Megasyrphus, Meliscaeva, etc. (easier said than done)
  • Currently only suitable for identifying northeastern species.

S. torvus

S. ribesii

S. knabi

S. rectus

S. vitripennis

S. opinator

S. sexmaculatus

  • Has six spots on abdomen instead of 2 bands and 2 spots (the normal 2 yellow bands are split up)
  • Northern forest/tundra and western subalpine habitat
  • Photo?

S. attenuatus

  • Has six spots on abdomen instead of 2 bands and 2 spots
  • Yellow abdomen margin
  • Canada and northern US
  • "hind femur entirely yellow or with up to basal half black"
  • Photo?

S. currani

  • M "Tergites 3 and 4 with yellow bands emarginate posteriorly, notreaching lateral margins or reaching them only very narrowly." / F "Tergites 3 and 4 with yellow bands reaching lateral marginsvery narrowly to broadly."
  • "Femora yellow"
  • Western US (Oregon to Colorado)

S. sonorensis?

  • "Yellow bands of tergites 3 and 4 entire, not extending to lateralmargins or reaching them very narrowly or over about half their length."
  • "hind femur black with apex narrowly yellow" (like torvus and vitripennis)
  • Arizona, New Mexico

S. dimidiatus
S. doesburgi
S. monoculus

Sources

Julkaistu lokakuu 5, 2019 03:15 IP. käyttäjältä upupa-epops upupa-epops | 2 kommenttia | Jätä kommentti

lokakuu 23, 2019

Cool "Fly Death Fungus" Video

This video was just posted the other day by a neat Youtube channel I subscribe to and I thought it was really interesting. I've seen the fungus several times and I've also seen a number of fly observations on iNaturalist where it was present unknown to the observer.

https://www.youtube.com/watch?v=C2Jw5ib-s_I

Species photo gallery:
https://www.inaturalist.org/taxa/339550/browse_photos
My observations:
https://www.inaturalist.org/observations?taxon_id=339550&user_id=upupa-epops

Julkaistu lokakuu 23, 2019 10:56 IP. käyttäjältä upupa-epops upupa-epops | 2 kommenttia | Jätä kommentti