Diagnosis. It belongs to the annulicornis species-group, and can be separated from other species within that group based on the combination of metasoma yellow-orange on anterior 0.5–0.6 of T1 and most of laterotergites and hypopygium, T2 shape and ovipositor sheaths slightly shorter (0.9 ×) than metatibia.
Description. Female. Body length 2.0–2.1 mm or 2.2–2.3 mm. Fore wing length 2.2–2.3 mm. Head color: mostly dark brown to black, except for yellow clypeus, labrum, mandibles, and spot on lower corner of gena near oral foramen. Flagellomere color: all flagellomere brown to black. Mesosoma color: entirely dark 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 4.1–4.5 ×. Mediotergite 1 maximum width/width at posterior margin 2.1–2.2 ×. Mediotergite 2 width at posterior margin/length: 3.6–3.7 ×. Mediotergite 2 sculpture: Mostly with longitudinally striate sculpture (sometimes with small, smooth area centrally). Ovipositor sheaths length: 0.9 × as long as metatibia. Male. Unknown.