[1][2][3] Parastemmiulus elektron was described from a solitary fossil, which is preserved as an inclusion in a transparent chunk of Mexican amber.

[1] Mexican amber is recovered from fossil bearing rocks in the Simojovel region of Chiapas, Mexico.

The La Guadalupe Quarry site is an outcrop of amber bearing strata belonging to the Mazantic shale.

[1][2][3] The holotype was first studied by a team of researchers headed by Francisco Riquelme of the Universidad Autónoma del Estado de Morelos with their 2013 type description of the genus and species being published in the natural sciences journal Historical Biology.

Present is a defined, pear-shaped Tömösváry organ located below the antenna socket and reaching the ocellar field.