Eucelatoria sp. (Bolivia, French Guiana)

Eucelatoria sp. (Bolivia, French Guiana)
This is a very distinctively marked genus. Determinations by Monty Wood.

Copecrypta (Bolivia, French Guiana)

Copecrypta (Bolivia, French Guiana)
These 2 flies are either Copecrypta or a genus very close to it.

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:

Chetogena sp. (French Guiana)

Chetogena sp. (French Guiana)
This is another familiar genus from the Palearctic and North America and these 2 specimens show some extremes of size and morphology – it is quite a diverse genus. Determined by Monty Wood.

Belvosia sp. (including Triacora sp.)

Belvosia sp. (including Triacora sp.)
This is a selection of Belvosia spp. but also including the very closely related Tricora, which is probably a subgenus: Determinations by Monty Wood.

Atacta sp. (French Guiana)

Atacta sp. (French Guiana)
This genus is one of my favourites – related to Belvosia but smaller and brighter in colouration. Determination by Monty Wood:

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 ...

Mont Itoupé samples

Mont Itoupé samples
I have just received a really exciting batch of Diptera from Mont Itoupé, French Guiana. This batch comes courtesy of the Parc Amazonien de Guyane and was collected by Stéphane Brule and his colleagues at Société Entomologique Antilles-Guyane (S.E.A.G.). Stéphane also included a few samples that he collected in the northern regions, which come with ...

Multifissicorn tachinid faces (Pelecotheca s.g. Cerotachina & Cryptocladocera)

Multifissicorn tachinid faces (Pelecotheca s.g. Cerotachina & Cryptocladocera)
This is a little post just to show the range of antennal branching in different multifissicorn tachinids – apologies for the poor quality of the photos. As you can see, Cryptocladocera spp. have huge branches on their antennae while both of the 2 new species have much shorter antennal branches, which seems closer to the ...

Cerotachina sp. (fg-taxon #97) 1

Cerotachina sp. (fg-taxon #97)
This little gem is another multifissicorn species with feathered antennae – similar to the other ‘featherface’ tachinids, like Borgmeiermyia and Cryptocladocera. However, after running this through Arnaud (1963) it keys out as Cerotachina but doesn’t conform to either of the 2 known species so I am considering this a new, as yet undescribed species. In ...

Belvosia sp. (French Guiana, ex. Villu Soon)

Belvosia sp. (French Guiana, ex. Villu Soon)
This is a lovely specimen of Belvosia, donated by Villu Soon from specimens he collected in French Guiana.

fg-taxon #98 (Calodexia sp.) 1

fg-taxon #98 (Calodexia sp.)
This is a really interesting group of species – all very similar in general body shape and with a curious ovipositor that appears to emerge vertically, under the abdomen. EDIT (Monty Wood 26/9/2010): These are all Calodexia spp. – parasitoids of cockroaches. Monty recalls seeing army ants driving invertebrates ahead of them and Calodexia swarming and leaping ...

fg-taxon #91 (Phasia sp.)

fg-taxon #91 (Phasia sp.)
This is a real Phasia lookalike with it’s body shape and wing venation, but I have run it through the keys in Sun & Marshall and compared the venation and genitalia to the figures and I can’t see anything that comes close enough to convince me that it is a Phasia sp. EDIT (Monty Wood ...

Pelecotheca (prob. Cryptocladocera) sp. female (fg-taxon #90)

Pelecotheca (prob. Cryptocladocera) sp. female (fg-taxon #90)
This one is unusual because the abdomen is tipped with a strange, shiny, flattened structure that resembles a squashed tube. EDIT (Monty Wood 26/9/2010): This is an example of a female Pelecotheca (probably the female of the large multi-fissicorn featherfaces so sub-genus Cryptocladocera). The flattened shiny structure is distinctive of this group of sub-genera.

fg-taxon #89 (Masiphya sp. – male)

fg-taxon #89 (Masiphya sp. - male)
A really unusual medium-sized tachinid with large curved-under genitalia. In addition to that it has widely separated T1+2 marginals, a projecting mouth edge, 2 katepisternals, quite short antennae & a small ‘Sturmia-spot’. EDIT (Monty Wood 26/9/2010): This is a male Masiphya sp. – a genus with highly distinctive male genitalia and (usually) with vibrissae high ...

fg-taxon #88 (Jurinia sp.)

fg-taxon #88 (Jurinia sp.)
EDIT (Monty Wood 26/9/2010): This is a Jurinia sp.

fg-taxon #87 (Myothyriopsis cf. bivittata)

fg-taxon #87 (Myothyriopsis cf. bivittata)
EDIT (Monty Wood 26/9/2010): This is Myothyriopsis poss. bivittata – the broad black vittae are quite distinctive. This genus has been reared from Heliconius butterflies.

fg-taxon #31 (Myothyriopsis sp.)

fg-taxon #31 (Myothyriopsis sp.)
EDIT (Monty Wood 26/9/2010): This is Myothyriopsis sp. – this genus has been reared from Heliconius butterflies.

Pheeewww! I’ve just finished sorting batch 3

Pheeewww! I've just finished sorting batch 3
I like to split the processing of Malaise trap samples into several distinct phases. The first phase is to empty the tubes of insects suspended in alcohol into individual tupperware trays and then work through them, splitting out the groups that I am interested in (mainly tachinids) and that I collect for friends. The tachinids ...

Cordyligaster petiolata (Sophiini, fg-taxon #85) 2

Cordyligaster petiolata (Sophiini, fg-taxon #85)
This is my current favourite from Villu’s recent sample of tachinids from French Guiana – it looks very closely related to one I found in my last batch – see here. This identification was made by comparing the specimen to material in the NHM in London – many thanks to Erica McAlister & Kim Goodyear ...