In increasingly rare instances, P. phagia has been known to mutate to several different genera and species, all of which cause horrible physical deficiencies for the affected animals. Known variations of this terrible, terrible parasite include:
Primaropteryx wristattachia: this variation somehow detaches the primaries from the phalange, leaving them dangling from the wrist.
Remigopteryx phagia: this variation is known to totally consume the arm feathers of a deinonychosaur.
Pronatowrist breakius: This especially dangerous parasite actually deforms the arms by bending the wrists into unnatural positions. Is very painful for the animal.
Jurassopark completefuckupius: Too terrible to describe here.
Seriously, I wouldn't wish J. completefuckupius on anybody.
The comic made me laugh.
The last line of the description made my day.
Ha, ha, ha! This is so funny! Poor deinonychosaur, though.
But I am sad to say, until about last year, at some point in the time I have drawn Dromaeosaurs, they had all experience at least one of each of these terrible feather-mites!
All I've got to say about Jurassopark completefuckupius is that didn't it take a few decades for people to finally stop doing the fucking tail dragging thing? They've known better since the... what, 1920's? And yet you could still find trail-dragging T. rexes in the 1970's? So maybe by 2040 or so that parasite will finally go extinct. :/
It'll be even longer until word finally gets out that Tianyulong really does exist, unfortunately.
A more recent study [link] (Fowler 2011) indicates that deinonychosaurs might have actually benefitted from long feathers on the hands and arms, as these would have enabled the animal to balance while atop a struggling prey animal, much in the way that modern birds of prey use their wings for balance when grappling with prey.