Key to Neotropical species of Coelinius Nees 1 Notauli incomplete, not reaching to mesoscutal pit.......................................................... 2 - Notauli complete, reaching to mesoscutal pit............................................................... 3 2 Head elongate in dorsal view (distinctly longer than wide). Hind femur 4.0× as long as wide. Fore wing with vein r 1.2× as long as stigma width. First metasomal tergite 3,7–4,3× as long as apical width. Mexico ........................................................................................ Coelinius carmenae Figueroa, Sánchez & Kula (♀, ♂) - Head spherical or transversal in dorsal view (about as long as wide or wider than long, as Figs 9, 12, 15, 21). Hind femur 4.5–4.9× as long as wide. Fore wing with vein r 0.4–0.6× as long as stigma width. First metasomal tergite 2.5–2.7× as long as apical width......................................................................................... 4 3 Head elongate, 0.9× as wide as long in dorsal view (Figs 2, 18); temple 2.0–2.7× as long as eye (lateral view), protruding posterior-apically (Figs 3, 19). Frons rugose. Mandible 1.7–1.9× as long as apical width (Fig. 20). First metasomal tergite without dorsope. Head predominantly yellow (Figs 2–4). Brazil ................ Coelinius longicephalus sp. nov. (♀, ♂) - Head transversal 1.1–1.3× as wide as long, in dorsal view (as Figs 9, 12), temple 0.7–1.8× as long as eye (lateral view), rounded. Frons rugose or smooth. Mandible 2.0–2.4× as long as apical width. First metasomal tergite with dorsope (shallow or deep). Head brown to black except mandibles, mouth, and antenna parts, which can be yellowish........................... 5 4 Head 1.15–1.2× as wide as long in dorsal view (Fig. 15); temple 1.4–1.6× as long as eye (lateral view) (Fig. 16). Mandible 1.2– 1.4× as long as apical width; apex 1.0× as wide as base (Fig. 17). Labial palp 3-segmented; maxillary palp 4-segmented, 0.5× as long as head length. First flagellomere 2.65–3.1× as long as wide, tenth flagellomere 1.5–1.7× as long as wide. Mesoscutum 1.0–1.1 as wide as high. Hind tibia 1.1–1.2× as long as hind tarsus. Fore wing with vein 1-SR+M 0.9–1.05× as long as 2-SR, first subdiscal cell closed. Hind wing with vein 1-M 0.4–0.5× as long as M+CU and 1.1–1.6× as long as 1r-m. Brazil ............................................................ Coelinius kali Souza-Gessner & Penteado-Dias (♀, ♂) - Head 1.4× as wide as long in dorsal view (Fig. 21); temple 1.1× as long as eye (lateral view) (Fig. 22). Mandible 2.1× as long as apical width; apex 0.7× as wide as base (Fig. 23). Labial palp 4-segmented; maxillary palp 6-segmented, 1.5× as long as head length. First flagellomere 4.6× as long as wide, tenth flagellomere 3.8× as long as wide. Mesoscutum 0.8× as wide as high. Hind tibia 0.8× as long as hind tarsus. Fore wing with vein 1-SR+M 1.4× as long as 2-SR, first subdiscal cell open. Hind wing with vein 1-M 0.9× as long as M+CU and 3.4× as long as 1r-m. Brazil ..... Coelinius lux Souza-Gessner & Penteado-Dias (♀) 5 Temple 0.7× as long as eye (lateral view). Fore wing with vein r 1.1× as long as stigma width. Mexico ......................................................................... Coelinius danielae Figueroa, Sánchez & Kula (♀, ♂) - Temple 1.3–1.8× as long as eye (lateral view) (Figs 10, 13). Fore wing with vein r 0.4–0.6× as long as stigma width...... 6 6 Frons smooth. Labial palp 3-segmented. Maxillary palp 5-segmented, 0.3–0.4× as long as head high, third segment 0.6–0.8× as long as fourth. Fore wing with vein cu-a 0.4–0.8× as long as 1-CU1. Hind wing with vein 1-M 1.1–1.2× as long as M+CU, 3.65–3.9× as long as 1r-m. First tergite 3.5–3.8× as long as apical width. Body color predominantly brown. Brazil (Figs 9–11)................................................... Coelinius canastra Souza-Gessner & Penteado-Dias (♀, ♂) - Frons rugose. Labial palp 4-segmented. Maxillary palp 6-segmented, 0.6–0.8× as long as head high, third segment 1.25–1.8× as long as fourth. Fore wing with vein cu-a 1.2–1.6× as long as 1-CU1. Hind wing with vein 1-M 0.6–0.9× as long as M+CU, 2.8–4.0× as long as 1r-m. First tergite 2.7–3.2× as long as apical width. Body color predominantly black. Brazil (Figs 12–14)................................................... Coelinius itamonte Souza-Gessner & Penteado-Dias (♀, ♂)

Published as part of Oliveira, Franciélle Dias De & Penteado-Dias, Angélica Maria, 2022, New species of Coelinius Nees (Hymenoptera: Braconidae: Alysiinae) from Brazil, pp. 199-210 in Zootaxa 5129 (2) on page 208, DOI: 10.11646/zootaxa.5129.2.2, http://zenodo.org/record/6500705