[1] Along with other well preserved insect fossils, the G. pulcher specimen was collected from layers of the Lutetian Messel pit World Heritage Site.

[1] At the time of description, the holotype specimen, number SMF MeI 10999, was preserved in the Senckenberg Research Station Messel fossil collections.

The insect was first studied by German entomologists Gennady Dlussky, Torsten Wappler and Sonja Wedmann; their 2009 type description of the new species was published in the electronic journal Zootaxa.

[1] The Gesomyrmex pulcher specimen is a partially preserved adult queen, which was fossilized with her dorsal side facing upwards and the attached wings folded along her back.

The antennae are slender in appearance, composed of a scape which extends to the middle of the eye and ten funicular segments which are either shorter than they are wide, or equal in height and width.