This specimen is proving to be a real problem – it keys to Atactosturmia because it has 3 rows of small hairs outside the vibrissa and a bristle-comb on the hind tibia (amongst other things). But Monty things that it looks more like Leschenaultia or a black Lespesia, which only have 1 row of hairs outside ...
Needs confirmation but the lack of occellar bristles is fairly indicative.
This is a specimen of Pseudochaeta – a Carcelia-type tachinid but with a row of strong facial-ridge bristles.
These are 2 Siphosturmia spp. The first looks very like a Winthemia but on closer examination is has 4 katepisternal bristles, not 2. EDIT (05/10/2010): I am a little suspicious about the second specimen – I think I might have written the wrong name down because the humeral callus has a triangle of bristles, and ...
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.
Apparently Winthemia are pretty much the same the world over – 2 katepisternals with hairy parafacials. Determination by Monty Wood.
This is quite distinctive little species – similar to Leschenaultia but different. Determination by Monty Wood.
This is apparently a common species around the Caribbean. Determination by Monty Wood.
Blepharipa is a familiar genus of palearctic flies to me, as I am sent them occasionally from European material. But it was quite a surprise to hear Monty say that I had a South American Blepharipa … different species of course (and unknown so far) but the same genus, nonetheless.
This is a selection of Belvosia spp. but also including the very closely related Tricora, which is probably a subgenus: Determinations by Monty Wood.
This genus is one of my favourites – related to Belvosia but smaller and brighter in colouration. Determination by Monty Wood:
This taxon is clearly related to the other taxa with very prominent Sturmia-spots – especially fg-taxon #14 EDIT (04/10/2010): This taxon comprised 4 Winthemia sp. EDIT (17/10/2010): The odd specimen originally keyed to “Lydella” but is now just “Winthemiini” after chatting with Monty Wood. This specimen needs running through Guimaraes’ 1983 revision of some Winthemiini.
This is an interesting taxon with a very distinctive, dark patch of bristles on the underside of tergites 4 & 5 – rather like a broad Sturmia-spot. EDIT (09/10/2010): This vaguely resembles a Masiphya, with its Sturmia-spot and a few other bristle arrangements – but it has to many differences for me to place it more ...
This is a lovely specimen of Belvosia, donated by Villu Soon from specimens he collected in French Guiana.
A really rather nice species of Belvosia – a member of the Goniinae, which is shown clearly by the quite Gonia-shaped head 🙂 The genus contains about 70 very similar species and was last revised by Aldrich in 1928* * J.M. Aldrich. 1928. A revision of the American parasitic flies belonging to the genus Belvosia. ...
This is another really lovely tachinid of medium size but with everything very rounded. The head is similar to some of the Goniini and even the posterior segments of the abdomen are rounded and whitened. UPDATE (30/1/2010): After comparing with the material at the NHM in London I think this is a species of Belvosia ...