Calodexia sp. (pe-taxon #20)

Calodexia sp. (pe-taxon #20)
This is a close relative of fg-taxon #98 with its rounded abdomen, large eyes and downward-pointing ovipositor. EDIT (09/10/2010): This is undoubtedly a female Calodexia sp. http://chrisraper.org.uk/blog/?p=2495

Winthemia & Winthemiini (pe-taxon #19)

Winthemia & Winthemiini (pe-taxon #19)
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.

pe-taxon #18

pe-taxon #18
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 ...

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 ...

Masiphya sp. male ??? (pe-taxon #17)

Masiphya sp. male ??? (pe-taxon #17)
This is a fairly typical tachinid but has been extracted from the others by a similar trait for a flattened abdomen with very distinctive male genitalia, clearly visible underneath. EDIT (Monty Wood 26/9/2010): These are all clearly Masiphya sp. males, with the very characteristic male genitalia and pale Sturmia-spot. This taxon is slightly unusual in ...

Pelecotheca flavipes Thompson (Neominthoini, pe-taxon #16)

Pelecotheca flavipes Thompson (Neominthoini, pe-taxon #16)
After keying this taxon through MCAD it looks like one of the Neominthoini (it emerges on Neomintho, where most Neominthoini will end up) and the strong bristles on the facial ridges and the very elongate antennae are reminiscent of the females of the Pelecotheca group of species. All of the specimens in this species group are ...

possibly Arrhinactia sp. ??? (pe-taxon #15)

possibly Arrhinactia sp. ??? (pe-taxon #15)
This is an interesting and very prolific taxon that might, on the face of it, seem to be unexceptional. But it stands out from the others by having a very peculiar abdomen shape – laterally compressed at the apex with the male terminalia protruding from the most ventral part. The abdominal dusting colour & pattern ...

Pelecotheca (Cerotachina) sp. male (pe-taxon #14)

Pelecotheca (Cerotachina) sp. male (pe-taxon #14)
This appears to be another new, hitherto undescribed, species closely related to Cerotachina – it has no median discals and antenna-3 is very shallowly multifissicorn. That is, the third antennal segment has bumps on both sides covered with tufts of long hairs. These bumps are shorter than the branches on my French Guianan Cerotachina and ...

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 ...

close to Crocinosoma ??? (pe-taxon #13)

close to Crocinosoma ??? (pe-taxon #13)
This taxon seems very prolific and quite consistent in its morphology too, though I am not assuming that it represents a single species. This taxon resembles some individuals of fg-taxon #22 but has a much longer proboscis. EDIT (04/10/2010): This keys to Crocinosoma and it looks similar to a named specimen but antenna-3 is the wrong ...

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.

Atacta sp. (pe-taxon #12)

Atacta sp. (pe-taxon #12)
This is another small Belvosia-type tachinid from Peru – compare this with my photos of a similar taxon from French Guiana. This is much more heavily dusted than other, larger Belvosia spp. but the final tergite is white-dusted like the others. EDIT (25/2/2010): Norm Woodley today got in touch and has said that these species ...

pe-taxon #11 (not Stenodexia sp.)

pe-taxon #11 (not Stenodexia sp.)
This is a really unusual tachinid with its mottled wings, shiny black body and long, curved piercing organ. EDIT (05/11/2010): This was originally keyed tentatively to Stenodexia but I was not 100% convinced. Monty has since said that this is definitely NOT Stenodexia after all … so back to the drawing board! 😉

Souzalopesmyia sp. (Muscidae, pe-taxon #10) 1

Souzalopesmyia sp. (Muscidae, pe-taxon #10)
This is a rather dubious tachinid – with its unbent median vein and very shallow subscutellum – but something about it reminds me of a tachinid. The plumose anyennae and deep gena might suggest Dexiinae. See also pe-taxon #29. EDIT (09/10/2010): After showing this to Adrian Pont he thinks that they most resemble muscids but ...

Telothyria sp. (pe-taxon #09)

Telothyria sp. (pe-taxon #09)
Another strange Pollenia-type tachinid (see my photos of similar taxa from French Guiana). EDIT (26/9/2010): This is clearly a Telothyria sp., with branched hairs on the pleurae.

Beskia aelops from Peru

Beskia aelops from Peru
This is a lovely little dexiine tachinid found across most of the neotropics and into the southern United States – note the colouration, the hatched-shaped antenna-3 and long, curved proboscis 🙂 See also my photos of Beskia from French Guiana.

Belvosia sp. (pe-taxon #08)

Belvosia sp. (pe-taxon #08)
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. ...

Trichophora (Diaphanomyia) aurifacies, Desvoidy (pe-taxon #07)

Trichophora (Diaphanomyia) aurifacies, Desvoidy (pe-taxon #07)
Another member of the Tachininae – presumably related to the Epalpus group because it hasn’t got any palps. This is the larger of the 3 specimens in this sample (at about 1cm) and so they are all relatively small for this group of flies. EDIT (Monty Wood, 26/9/2010): This is a group of Trichophora sp. ...

Deopalpus sp. (pe-taxon #06)

Deopalpus sp. (pe-taxon #06)
An interesting member of the Tachininae – this time with shaded wings, which is quite an unusual feature in this subfamily. EDIT (Monty Wood, 26/9/2010): This is a Deopalpus sp.

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 🙂