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Tachydromia ID? => T.umbrarum
runetk	#1 Posted on 03-07-2019 12:58
Member Location: Norway - Harstad 68deg North Posts: 325 Joined: 14.11.18	Hi, This probably is a Tachydromia sp.[Tachydromia umbrarum, I think] from North-Norway,Harstad kommune, Fauskevåg store (10 m), seen the 24.june 2019. Habitat: Garden. distribution/Bahavior: Very common, running quickly on the walls of the house. size: minute (no more than 4mm) Is identification confirmation possible? Thanks in advance, Rune Kristiansen runetk attached the following image: [156.13Kb] Edited by runetk on 14-11-2021 13:44


eklans	#2 Posted on 03-07-2019 14:19
Member Location: Franconia, Germany Posts: 3689 Joined: 11.11.18	Hi Rune, the behavior is exactly what I saw! But umbrarum should have a yellow band in the middle of the front femora (smithi?). Hope, this helps a bit, Eric


runetk	#3 Posted on 03-07-2019 22:27
Member Location: Norway - Harstad 68deg North Posts: 325 Joined: 14.11.18	Thanks Eric I think this family is very undocumented in norway and sweden duo to its size. No recent findings for my area Troms in north-norway. Still few for norway and sweden in general. mostly t.umbrarum.. the others need probably genitalia samples. For all i now it can be an undocumented species But due to the advance in macro technology with cameras this will change. Macro photography is cool and really rewarding. This site is extreamly important with its great gallery of different species. NB: t. smithi is not an option in artsobservasjoner.no (so not recorded in norway)


Paul Beuk	#4 Posted on 04-07-2019 13:24
Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04	I cannot see any thickened, strong dorsocentral and scutellar setae. That would rule out umbrarum and smithi. Other characters might leas to excisa but a specimen is required for any certainty. Paul - - - - Paul Beuk on https://diptera.info


runetk	#5 Posted on 04-07-2019 14:53
Member Location: Norway - Harstad 68deg North Posts: 325 Joined: 14.11.18	Thank you so much for taking your time and giving me such a thorough explanation Paul. . As I expected, a specimen is needed. I will send "one" to a lab in Tromsø or oslo. So we can have certenty regarding this common specimen in the north. Edited by runetk on 04-07-2019 14:54


Paul Beuk	#6 Posted on 04-07-2019 15:32
Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04	If you have got a spare one: https://diptera.i...page_id=32 Paul - - - - Paul Beuk on https://diptera.info


runetk	#7 Posted on 04-07-2019 16:20
Member Location: Norway - Harstad 68deg North Posts: 325 Joined: 14.11.18	No problem, I will send you a set of samples marked from diffrent locations in the county of southern Troms. With you as reference and this thread. Marked with my own collection number.


runetk	#8 Posted on 02-08-2019 16:52
Member Location: Norway - Harstad 68deg North Posts: 325 Joined: 14.11.18	The Tachydromia samples are on its way in the post to you.


Paul Beuk	#9 Posted on 06-08-2019 17:39
Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04	I cannot make anything more of them then dark specimens of umbrarum, even after genital disscetion, but I will make a more thorough comparisson later. Paul - - - - Paul Beuk on https://diptera.info


runetk	#10 Posted on 06-08-2019 18:39
Member Location: Norway - Harstad 68deg North Posts: 325 Joined: 14.11.18	Thanks Paul Keep me posted what the final conclusion becomes.


Paul Beuk	#11 Posted on 06-08-2019 19:50
Super Administrator Location: Netherlands Posts: 19363 Joined: 11.05.04	Of course Paul - - - - Paul Beuk on https://diptera.info


Isidro	#12 Posted on 31-08-2023 22:38
Member Location: Zaragoza, Spain Posts: 2070 Joined: 26.04.07	Hi @Runetk maybe you can give some insight in this similar thread? https://diptera.info/forum/viewthread.php?thread_id=110732 Thanks a lot in advance!

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