[1][2] Anochetus dubius is known from the solitary fossil insect which, along with two soil particles, is an inclusion in a transparent yellow chunk of Dominican amber.

The specimen was collected from an undetermined amber mine in fossil-bearing rocks of the Cordillera Septentrional mountains of northern Dominican Republic.

[3] At the time of description, the holotype specimen, number "Do-4192", was preserved in the State Museum of Natural History Stuttgart amber collections in Baden-Württemberg, Germany.

The holotype fossil was first studied by entomologist Maria L. De Andrade of the University of Basle with her 1991 type description of the new species being published in the journal Stuttgarter Beiträge zur Naturkunde.

The overall coloration of the body is a brown darkening on the head ad gaster, with the coxae and portions of the trochanters and femora being a reddish tone.