Elliot. A. jubatus lucifer, commonly the Panay golden-crowned flying fox, is still sometimes considered an extinct species of megabat. A 1998 publication noted that there were no morphological differences that distinguish A. jubatus lucifer from A. jubatus. This publication was used by Mammal Species of the World and the IUCN as justification as listing A. jubatus lucifer as a subspecies of A. jubatus rather than as a full species. Description Overall, the giant golden-crowned flying fox is similar in appearance to many Pteropus species. It is different in its smaller canine teeth and its larger and more complex molars and premolars. Its upper incisors are slightly longer than Pteropus species, as well as sharper. Its four lower incisors have a greater disparity in length between the inner and outer pair than do Pteropus. Its dental formula is for a total of 34 teeth. The giant golden-crowned flying fox is one of the largest bat species in the world. It is among the heaviest of all bat species, with individuals weighing up to . The only bat species known to weigh more than the giant golden-crowned flying fox are the Indian flying fox (Pteropus medius) and great flying fox (Pteropus neohibernicus), with a maximum weight of and respectively. It has the longest forearm length of any species, measuring up to . The great flying fox has a slightly shorter forearm length, and its wingspan is thus presumed to be lesser as well. The wingspan of the Indian flying fox is up to , while the giant golden-crowned flying fox has a wingspan of . This species is somewhat dimorphic, with males slightly larger than females in many cranial and external measurements. The giant golden-crowned flying fox gets its common name from its fur coloration. It has golden coloration that begins between its eyes and terminates to a narrow "V" shape at the nape of its neck, though sometimes extending to the upper shoulders. The sides of its face, brows, and throat are black, while the sides of its neck and upper back are maroon; this maroon fur transitions into brownish black, which then grades into reddish brown down the back. On its ventral (belly) side, its fur is generally black, though the front of the neck may have a maroon tinge and its belly may be interspersed with yellow hairs. Its hindlimbs are covered with brownish black fur, and its flight