Fore wing with two black bands; pronotum entirely black; lateral longitudinal carinae of median tergite 1 blunt.

Holotype: male. Body length 7.6 mm. Fore wing length 6.7 mm. Fore wing with two black bands. Scutellar sulcus with two longitudinal carinae. Anterior transverse carina of propodeum absent. Median areola of propodeum lacking well-defined margins. Lateral longitudinal carinae of median tergite 1 blunt. Median syntergite 2+3 1.6 times longer than wide.

Unknown.

Lytopylus robertofernandezi is named in honor of Roberto Fernández in recognition of his participation in the collaborative development of the ICE-ACG geothermal project of Pailas II, northwestern Costa Rica.

Reared only one time and from the leaf-tier Stenoma Janzen687 (Depressariidae) feeding on mature leaves of Pouteria exfoliata (Sapotaceae) at the intersection of the ACG dry forest and rain forest ecosystems at 540 m elevation.

Holotype ♂: Costa Rica, Alajuela, Sector San Cristobal, Tajo Angeles, Area de Conservaciόn Guanacaste 10.86472N -85.41531W 540m., Carolina Cano coll., food plant: Sapotaceae Pouteria exfoliata, host caterpillar: Depressariidae, Stenomatinae, Stenoma Janzen687, coll. date: 6/7/2010, parasitoid eclosion date: 6/23/2010, DHJPAR0040221.