Some more stacking … 1

Some more stacking ...
Here are a few Pelecotheca (Cryptocladocera) sp. stacks. The technique involves taking about 30 photos, each at a different focal point in the specimen and using a macro-rail to slowly move the camera backwards or forwards. The focused parts of each photo are then combined using software called Zerene Stacker (Pmax setting) to make the ...

Archytas aurifrons, Townsend

Archytas aurifrons, Townsend
Last week I spent a happy afternoon at the BMNH, courtesy of Erica & Nigel in the Diptera department. I decided to concentrate on a few genera and try to identify a few neotropical specimens. My first was Archytas, a large genus with many very similar species, because I have a few quite atypical taxa ...

Homogenia sp. (Brazil)

Homogenia sp. (Brazil)
These quite large (>1cm) phasiines are obviously in the tribe Trichopodini but they only have small leaf-shaped hairs on the hind tibiae. Det: Monty Wood, 2010.

Trichophora sp. (Brazil)

Trichophora sp. (Brazil)
Determination by me – confirmed by Monty Wood.

Phasia sp. (Brazil & Bolivia)

Phasia sp. (Brazil & Bolivia)
Determinations by Monty Wood.

Chrysoexorista sp. (Bolivia & Brazil)

Chrysoexorista sp. (Bolivia & Brazil)
This genus is one of my favourites, but from the rather drab greasy-looking colouration you might be forgiven for wondering why? However, their gorgeous metallic green colours only show in life or when freshly removed from alcohol – but when they have dried out the colours are all lost and all that is left is ...

Blepharipa sp. (Brazil)

Blepharipa sp. (Brazil)
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.

Archytas (French Guiana & Brazil)

Archytas (French Guiana & Brazil)
The following is a selection of Archytas sp. from both French Guiana and Brazil showing some of the immense diversity of this genus. Despite their huge variability Archytas spp. usually have a characteristic change in colouration between tergites 1-4 and tergite 5 – the whole abdomen is shiny but tergites 1-4 have a faint, pale ...

Actinochaeta sp. (Brazil)

Actinochaeta sp. (Brazil)
This lovely little Mintho-type fly was collected in Rondania, Brazil by Eric Fisher and was determined by Monty Wood:

Another fantastic parcel from Eric & Martin 3

Another fantastic parcel from Eric & Martin
Today my postman huffed & puffed his way up the driveway with another box of specimens from Eric Fisher & Martin Hauser. My parcel wasn’t really all that heavy but I think the postie liked to make a point … he was feeling over-worked trying to get parcels to everyone before Easter 😉 Inside was ...