This is a very important specimen, there being one other similar specimen known ( American Museum of Natural History, DR-14–403). This is also one of only a tiny number of specimens known with an alate female transporting a mealybug in her mandibles (four according to Polla 2005). Polla writes, "the fossils represent the oldest definitive record of trophobiosis."

Johnson et al. note that "Three pieces of Dominican amber, each containing an Acropyga gyne with a pseudococcid, were recovered from approximately 30,000 small pieces of Dominican amber screened by D. Grimaldi."

Johnson et al. (2001) write, "Species of the genus Acropyga are rarely encountered subterranean ants that rely on mealybugs or aphids to provide their nutritional needs. Female Acropyga (Formicinae) alates of pantropical and Mediterranean species carry mealybugs with their mandibles while swarming and probably inoculate their new nests with these mealybugs." They provided "a first report and description of Acropyga alates with mealybugs in Dominican amber dated to the Miocene, a discovery indicating that this intimate association and relatively uncommon behavior has existed for at least 15-20 million years. The mealybugs found with the Acropyga females in amber are related to the hypogaeic genera Eumyrmococcus Silvestri and Neochavesia Williams & Granara de Willink (Pseudococcidae, Rhizoecinae) and represent three new species of a new genus. The genus Electromyrmococcus and the species Electromyrmococcus abductus Williams, Electromyrmococcus inclusus Williams and Agosti, and Electromyrmococcus reginae Williams are described."