Tanytarsus lapponicus-type Lindeberg 1970

(By Andreas Plank from 10th April 2008, last modified 19. March 2019)

History of names

  • Tanytarsus lugens-indet1
  • Tanytarsus lapponicus-type

Below  you can read older comments.

Characters

  • premandible: 4+1 lateral spine,
  • mandible: 3-1-2-2 (inner-apical-outer-surface),
  • mentum: lateral 5 teeth
  • 3rd? instar
  • antenna 5 segments with small laterborn organs on pedicells: ~1.5x 3-5ant., antennal pedestal ~1xwidth, no spur
  • head brown

Head 1 (3rd instar):

Mandible 1 (detail):

(Click on the image to slide through)

Mandible of Tanytarsus lapponicus type

Head 2 (3rd instar):

Old Comments

#1

Andreas Plank wrote at Saturday, 12th April 2008 19:09:19 (GMT)

Hi,
this seems similar to Hofman 1971 (T. type C) that is mentioned in Brooks et.al. 2007 to beT. glabrescens, but there is no spur on antennal pedestal confused …
Andreas

#2

Godtfred Anker Halvorsen wrote at Monday, 14th April 2008 12:45:06 (GMT)

Hi,
Check the description of T. lapponicus in Ekrem & Halvorsen, 2007. (Contributions to the Systematics and Ecology of Aquatic Diptera - A Tribute to Ole A. Sæther. The Caddis Press)
The species is described from Northern Finland and are also distributed in Nothern America.
Best wishes Anker

#6

Andreas Plank wrote at Wednesday, 4th June 2008 12:16:30 (GMT)

… it may be T. lapponicus due to the surface tooth at T. lapponicus. The only difference is T. lapponicus' mandible has 3-1-2-1 (inner-apical-outer-surface) teeth whereas above it has 3-1-2-2 but I also  know that surface teeth from worn  T. gracilentus specimens appears often as 1 single plate although it has 2. So this specimen seems closer to T. lapponicus than to T. lugens. As mentioned below #5 this specimen has no plate at all behind mentum teeth like T. gracilentus has. Does anybody disagree to that?
Andreas

#3

HQ Tang wrote at Tuesday, 15th April 2008 13:01:43 (GMT)

I have met this morphotype species when i checking the Tibet subfossil, it co-occured with T. gracilentus, some incomplete pupae in the same place indicate that it is more like T. latiforceps.

#4

Torbjørn Ekrem wrote at Saturday, 19th April 2008 07:18:46 (GMT)

Yes, check the larval description of T. gracilentus. This species also have a “lugens-type” mandible, and the accessory plate is often very long.
Torbjørn

#5

Andreas Plank wrote at Monday, 21st April 2008 09:35:16 (GMT)

I have T. gracilentus in my samples as well but the antennal pedestal is longer: about 1.5x (L:W) and the plate of T. gracilentus can be seen often very clearly. But with this specimen I found none as described for T. gracilentus. I’ll check the description of T. lapponicus in Ekrem & Halvorsen, 2007 (Trond 2007).
Andreas