very nice Ctsm....
I know this thread is about one year old (I found it by chance googling for something compeltely different), but I think I could add some information to clarify some points regarding the ID of the plant and of the flowers...
Flowers: these are indeed male flowers and not female. Many Catasetum species have hooded male flowers (e.g. macrocarpum, discolor, planiceps, sanguineum, etc...). One easy way to identify male form female is to check for the 2 Antennae (trigger hairs!) at the basis of the column (there are two groups of catasetum: one with parallel antennae and one with crossing antennae). These are missing in the female flowers (but in some species they can be very very small giving the appearance of female flowers!!). Female flowers are normally less coloured in most species, and normally just green!
Plant: Although the presented flowers really look like those of Ctsm. macrocarpum, this plant cannot be identified as such. If you check the central horn of the hood, this is not pointed but somehow "truncated". A pure Ctsm. macrocarpum should have a very well defined trident (3 well defined and pointed horns). The 2 lateral horns in this plant are almost missing, and the border of the rest of the hood is also too irregular for teh pure species (this is also important, see below). As per current standards, this plant would be considered as Ctsm. xtapiriceps, which is the natural hybrid between Ctsm. macrocarpum and Ctsm. pileatum. Ctsm. xtapiriceps is actually a large complex of plants, incluidng the primary hibrid plus a large combination of backcrosses, back back crosses, and re crosses, giving a wide range of plants: quite close to Ctsm. macrocarpum (as the plant shown here) to quite close to Ctsm. pileatum.
Note that the artificial primary hybrid is now known as Ctsm. Tapiriceps, however in the past it was known as Ctsm. Splendens (RHS considers now Ctsm. pileatum var imperiale as a separate species, and Ctsm. Splendens as macrocarpum x imperiale - the ID of imperiale can lead to a long discussion, and this is actually considered by many, "including myself"**, as the other extrem of the xtapiriceps complex)
Furthermore, and back to the xtapiriceps complex, and to add more confusion, some plants considered as Ctsm. xtapiriceps (but the phenotypes closer to macrocarpum) have been collected from regions where Ctsm. pileatum does not exist... which suggest that the accepted "xtapiriceps complex" is indeed more complex than generally accepted - some of these plants can be tracked back to scapes from private collections, but in some cases this is less than probable.
for me, based on my field experience, and to make it simple, I consider Ctsm. pileatum as only one species including var. imperiale**; Ctsm. macrocarpum the very well known plant of this species (regardless, whether the "tooth" on the labelo is a perfect trident or not, but with very smooth hood border); Ctsm. xtapiriceps (and Tapiriceps, and Splendens) as anything else in between ... And I will change my mind, when someone shows me genetical evidence that it is not this way :-))
** OK, I must admit I am not very consistent when including var. imperiale as a variety of pileatum, but I do this just to simplify my own life and for "historical reasons", but aware of the following: the red color in imperiale, is "accepted" to come from macrocarpum genes which jumped into the pileatum pool (which, so far as I understand it, would make imperiale a hybrid of macrocarpum x pileatum - genes do not jump around from plant to plant without hybridization
)
Catasetum macrocarpum
This is one of the more bizzare looking Catasetums and it looks like you've done a great job with it! Congrats! 
This one definitely on "the list."
Too bad the flowers don't last longer (that and the large plant size are the main reasons I just enjoy the work of others instead of trying them myself)
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