Laurie and Hill considered it to be very large compared to other members of the diadema species group. They wrote that its nose-leaf and ears were similar in appearance to those of the fierce roundleaf bat, H. dinops. Its nose-leaf has four smaller, supplementary nose-leaves that project laterally. The holotype, an individual preserved in alcohol, had a forearm length of.
As of 2016, it is evaluated as a data deficient species by the IUCN. It meets the criteria for this classification because it is a poorly known species and any threats that it faces are unknown. It has only been documented once since the 19thcentury; therefore, its population size and distribution are not known.