im actually unsure if this was intentional or not, but theres a huuugeeee difference in the number of items that drop from the Pale Echecara and its Tawny counterpart.
Pale Echecara drops 24 different items
Tawny Echecara drops only 6 items, making an 18 item difference.
of course the proposition is to equal out their item drops, its something i only see with them at the moment!