Calodexia sp. (Ecuador)

Calodexia sp. (Ecuador)
This Calodexia came from a batch of flies kindly sent to me by Eric Fisher. Monty says that Calodexia are cockroach parasitoids and their oviposition technique may explain the strange down-pointing ovipositor:

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

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 ...