Various interesting Polideini (Surinam)

Various interesting Polideini (Surinam)
The Polideini is becoming one of my favourite tribes because they have such unusual features. Most tachinids have a disc-like, hairy lappet covering the metathoracic spiracle (the hind one on the thorax) but the Polideini all have paired hairy lappets that don’t quite meet at the top, leaving a little hole. They also have a ...

Hypotachina chrysophora (French Guiana)

Hypotachina chrysophora (French Guiana)
Det: Monty Wood, 2010.

Chlorohystricia sp. (Costa Rica)

Chlorohystricia sp. (Costa Rica)
This beautiful fly was given to me by John & Barbara Ismay who caught a few while in Monteverde, Costa Rica, after the 2010 International Diptera Congress. This genus belongs to a very unusual tribe (the Polideini) that look very similar to the Tachinini but that have a very distinctive metathoracic spiracle – made up ...

Chrysotachina sp. (French Guiana)

Chrysotachina sp. (French Guiana)
Chrysotachina is a very distinctive genus of metallic coloured tachinids. They are not common but they do come up in samples quite regularly. They have been reared from Hesperidae. Determination by Monty Wood:

Chrysotachina sp. (pe-taxon #03)

Chrysotachina sp. (pe-taxon #03)
This little tachinine fly (7mm) is a very beautiful blue metallic colour, which suggests to me that it might belong to the genus Chrysotachina but I haven’t done any research yet so I could be wrong – it is certainly smaller than most Chrysotachina. EDIT (Monty Wood, 26/9/2010): This is indeed a Chrysotachina sp.

fg-taxon #67 (Hypotachina chrysophora)

fg-taxon #67 (Hypotachina chrysophora)
A really interesting tachinid with a very deep gena (2.5x); bare arista; densely hairy eyes; thorax white dusted with 2 pairs of black vittae; 3 very strong scutellar bristles – apicals possibly absent; abdominal dusting all over T3-5 with a pair of black undusted triangles on each segment; calyptrae with long white hairs on the ...

Chrysotachina cf. braueri & ornata (fg-taxon #21)

Chrysotachina cf. braueri & ornata (fg-taxon #21)
The specimens in this taxon group are all metallic tachinids and almost certainly comprise at least 2 taxa. The first is relatively undusted and looks most like Chrysotachina braueri while the other, dusted taxon, looks most like Chrysotachina ornata but I am not convinced that the genitalia match closely enough to be the same species. ...