Acaulona or Xanthomelanopsis ??? (French Guiana & Surinam)

Acaulona or Xanthomelanopsis ??? (French Guiana & Surinam)
Acaulona & Xanthomelanopsis look very similar to Pennapoda spp. but without the leaf-like antero-dorsal bristles on the hind tibia. The only difficulty with these flies is that I just can’t make up my mind whether they have enough dorsocentrals to qualify as Xanthomelanopsis.

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.

Xanthomelanodes sp. (French Guiana)

Xanthomelanodes sp. (French Guiana)
One of the commonest phasiine genera – note the strong divergent lateral scutellars. Determination by Monty Wood.

Oestrophasia sp. (Costa Rica)

Oestrophasia sp. (Costa Rica)
Determination by Monty Wood.

Pennapoda & Xanthomelanodes sp. (French Guiana & Bolivia)

Pennapoda & Xanthomelanodes sp. (French Guiana & Bolivia)
Pennapoda & Xanthomelanodes are very commonly caught genera – being part of a group of very similar phasiine genera with shaded a costa and often with orange abdominal patches. Pennapoda closely related to the genus Trichopoda and both have leaf-like antero-dorsal bristles on the hind tibia, to a greater or lesser extent. Determination by Monty ...

Phasia sp. (Brazil & Bolivia)

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

Pennapoda sp. ??? (pe-taxon #30)

Pennapoda sp. ??? (pe-taxon #30)
This little phasiine is undoubtably a member of the Trichopodini, from the leaf-like bracts along the hind tibiae. This is very similar to some of the taxa from French Guiana – namely fg-taxon #8 #9 & #43. EDIT (04/10/2010): This keys quite comfortably to Homogenia sp. but it is much smaller than the other Homogenia ...

possibly Xanthomelanodes (pe-taxon #05)

possibly Xanthomelanodes (pe-taxon #05)
Another really nice phasiine – quite large (8-10mm) – with very beautiful contrasting body & wing coloration. EDIT (04/10/2010): This keys to Xanthomelanodes but I am not really confident about it – but I can’t think what else it can be so that’s what it is for now 🙂

Acaulona sp. (pe-taxon #04)

Acaulona sp. (pe-taxon #04)
An interesting little (3-5mm) phasiine taxon – quite prolific in the peruvian samples. EDIT (Monty Wood, 26/9/2010): This is a group of Acaulona sp.

Bibiomima handlirschi

Bibiomima handlirschi
One of my favourite flies from my recent NHM visits is the amazingly marked Bibiomima handlirschi, a rare phasiine tachinid from Central & South America. This specimen was taken in the Panama Canal Zone in 1913.

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 ...

fg-taxon #8 (Xanthomelanodes & Pennapoda sp.) 1

fg-taxon #8 (Xanthomelanodes & Pennapoda sp.)
This “taxon” is actually probably 5 taxa but they share very similar superficial morphology – they are almost certainly phasiines and they have the typical chololate-coloured body with paler markings; a deeply shaded wing costa; and a large head with large eyes. Specimen #79 (8a) is shown here (Xanthomalanodes sp.): Specimen #351 (8b) is shown ...

fg-taxon #43 (Pennapoda sp.) 1

fg-taxon #43 (Pennapoda sp.)
This is a typical French Guianan phasiine tachinid – chocolate brown body with some orange markings with a bold brown wing costa. This species has an interesting little bristle-comb on the hind tibia and the calyptrae are half black on the posterior edge. EDIT (Monty Wood 26/9/2010): These small phasiines are usually Pennapoda – part ...