The Pseudosiphona look superficially like a Siphona but with a much shorter labrum. You should also be able to just make out the strong ventral bristle on the katepisternum. Det: Monty Wood, 2010.
Pseudochaeta is another of the Carcelia-type tachinids, with large eyes, but it also lacks the tuft of hairs on the hind coxa, present on Carcelia. It also has a strong row of facial-ridge bristles. EDIT (09/10/2010): I have found a second specimen virtually identical to this one from Peru. Det: Monty Wood, 2010.
Here are a few more Carcelia-like tachinids but this time belonging to the genus Houghia, which lacks the tuft of hairs on the hind coxa: Det: Monty Wood, 2010.
Here I just wanted to show you how Chrysoexorista spp. loose their colour almost over night. This first photos show how the Chrysoexorista looked a few hours after it had been removed from the malaise trap alcohol and the last 3 show how it looks now:
As you might expect, the siphonines are well represented in the neotropics and familiar genera, like Siphona, Actia and Ceromya can be found. The group is quite easy to determine from the small size, hairy r4+5 (often also r1 and cu) and long, converging or parallel subapical scutellar bristles. Beyond that Monty’s key splits the ...
The genus Carcelia seems to be fairly ubiquitous around the world. The presence of the extremely deep eyes and very narrow strip of gena (the eye is at least 11x bigger than the gena) and the presence of a tuft of small hairs on the hind coxa is very distinctive. In the following photos the ...
This is quite a distinctive and very common taxon in the peruvian samples. The fly has a clear dusting pattern and the tip of the abdomen is laterally compressed and knife-like. Det: Monty Wood, 2010.
This genus is primarily a parasitoid of orthopterans. Det: Monty Wood, 2010.
One of the commonest phasiine genera – note the strong divergent lateral scutellars. Determination by Monty Wood.
This is quite a distinctive genus – with the shaded rm. It belongs to the tribe Nemoraeini. Determination initially by me – confirmed by Monty Wood.
Apparently Winthemia are pretty much the same the world over – 2 katepisternals with hairy parafacials. Determination by Monty Wood.
This is a huge genus containing many superficially dissimilar species. Determination by Monty Wood.
Determination by Monty Wood.
Determination by me – confirmed by Monty Wood.
Uramya is one of the genera where the males have very long ‘tails’ … sadly this is a female! Determination by Monty Wood.