Diptera.info - Discussion Forum: Tachinidae

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Tachinidae - Phasia pusilla
Frank Koehler	#1 Posted on 30-10-2006 19:12
Member Location: Bornheim / Rheinl. (D) Posts: 280 Joined: 30.09.06	Nikita Vikhrev wrote: Hi Frank. I think, yes, all Anthomyiidae, exclude the last. Last is Tachinidae, male of Phasia barbifrons or Phasia pusilla. Nikita Here ist it again, including a second pq photo (very busy specimen). Thanks to Nikita and thanks in advance for more comments Frank #6642 Germany / NRW: Swisttal-Heimertzheim, IX.2003 (small and very nervous) Edited by Frank Koehler on 31-10-2006 00:51 --------------------------------------------------- Col.: http://www.koleop...de/gallery Het.: http://www.hetero... ---------------------------------------------------


Nikita Vikhrev	#2 Posted on 30-10-2006 19:22
Member Location: Moscow, Russia Posts: 9475 Joined: 24.05.05	Looks like frontal bristles are in one row only, I think Ph. pusilla. Nikita Nikita Vikhrev - Zool Museum of Moscow University


ChrisR	#3 Posted on 30-10-2006 20:02
Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04	Yeah, the frontal area is nice and shiny so it looks clear of hairs and should be P.pusilla but I like to see the haltare to be really sure it isn't barbifrons (yellow haltare).


Frank Koehler	#4 Posted on 30-10-2006 20:17
Member Location: Bornheim / Rheinl. (D) Posts: 280 Joined: 30.09.06	Thanks Nikita & Chris! Haltare? Im not shure - the fly was moving very fast and most of the photos are not very sharp. It seems to be white (light yellow white), but to be shure I had to search and examine the specimen. Best regards Frank


ChrisR	#5 Posted on 30-10-2006 20:26
Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04	Hi Frank, If you have the specimen just check the colour of the haltare: yellow=P.barbifrons, brown=P.pusilla. Then to make sure, check the parafrontal area and look for hairs between the row of stout bristles and the edge of the eye - with hairs=barbifrons, without=pusilla.


Frank Koehler	#6 Posted on 31-10-2006 00:50
Member Location: Bornheim / Rheinl. (D) Posts: 280 Joined: 30.09.06	"brown" and "without" => pusilla thanks again Frank


Zeegers	#7 Posted on 31-10-2006 18:38
Member Location: Soest, NL Posts: 19133 Joined: 21.07.04	Warning: The haltere-feature as mentioned by Chris is OK in Britain, but not 100 % in Switzerland. The 'halter brown -> pusilla' part is correct even in Switzerland. But in Central Europe there are species with yellow halteres and still facial bristles as in pusilla. Anyway, this one should be fine Theo


ChrisR	#8 Posted on 01-11-2006 00:47
Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04	Good point - in general my opinions are based on English specimens


Frank Koehler	#9 Posted on 01-11-2006 23:31
Member Location: Bornheim / Rheinl. (D) Posts: 280 Joined: 30.09.06	Thanks a lot again! If I climb on our roof, I can see "Raperland" - if I would have a good telescope and exellent weather Best regards Frank Edited by Frank Koehler on 01-11-2006 23:34 --------------------------------------------------- Col.: http://www.koleop...de/gallery Het.: http://www.hetero... ---------------------------------------------------