Diagnosis. It is the only known species in the mariocarvajali group, and can be separated from all other known species of Pseudapanteles based on the shape of T2, and length of body and fore wing.
Description. Female. Body length 3.4–3.5 mm. Fore wing length 3.4–3.5 mm. Head color: entirely yellow to orange. Flagellomere color: all flagellomere brown to black. Mesosoma color: mostly orange, with parts or all of propodeum, metapleuron, metascutellum, and axillar complex brown to black. Metasoma color (dorsally): mostly dark brown to black, except for yellow-orange anterior 0.4–0.6 of mediotergite 1. Coxae color: all pale. Metatibia color: mostly pale, with posterior 0.1–0.2 dark. Metatarsus color: dark. Pterostigma color: entirely dark. Mediotergite 1 length/width at posterior margin 3.1–3.5 ×. Mediotergite 1 maximum width/width at posterior margin 1.7–1.8 ×. Mediotergite 2 width at posterior margin/length: 1.8–1.9 ×. Mediotergite 2 sculpture: Mostly with longitudinally striate sculpture (sometimes with small, smooth area centrally). Ovipositor sheaths length: 1.2 × as long as metatibia or 1.3 × as long as metatibia. Male. Much darker coloration than female, especially on metascutellum, propodeum, metacoxa and metasoma.