A small Neotropical genus .
Body length 6.6–7.9 mm; body mostly smooth and polished, with few carinae; clypeus margined dorsally by a distinct carina; occipital carina not meeting hypostomal carina; mesoscutum declivous anteriorly; notauli narrow and smooth, not meeting, present only on anterior part of mesoscutum; propodeum smooth and polished, sometimes with weak lateral and median carinae, areola absent or poorly defined; fore wing vein r-m present; first subdiscal cell open at apex, vein 2cu-a absent; hind wing vein M+CU 0.5 times length of 1M; vein m-cu bifurcate at apex; hind coxa with anteroventral basal tubercle; first metasomal tergite with two parallel longitudinal carinae, extending to half length of tergite, area between longitudinal carinae higher than tergite edges; basal sternal plate of first metasomal segment 0.2 times length of tergum; remaining tergites smooth and polished; ovipositor length equal to metasoma .
Venifurca gen. n. differs from the remaining doryctine genera by having hind wing vein m-cu bifurcate, with its two sides curving towards the base and apex. It is morphologically similar to Semirhytus and Johnsonius; however, it mainly differs from them by having the propodeal areola poorly defined or absent (always present and defined in Johnsonius and Semirhytus). It also differs from Semirhytus by having a smaller oral cavity, less than four times the malar space length (equal to or greater than four times the malar space length in Semirhytus) .
The new genus was recovered within the “South American major doryctine clade” previously proposed by Zaldívar-Riverón et al. , nested with significant support in a clade with the following four genera: Parallorhogas Marsh, Bolivar Zaldívar-Riverón & Rodríguez-Jiménez, Semirhytus Szépligeti and Johnsonius Marsh .
- , “Molecular phylogeny and historical biogeography of the cosmopolitan parasitic wasp subfamily Doryctinae (Hymenoptera:Braconidae)”, Invertebrate Systematic, vol. 22, pp. 345-363, 2008.
- , “Venifurca, a new genus of neotropical Doryctinae (Hymenoptera: Braconidae), and its phylogenetic placement”, Journal of Hymenoptera Research, vol. 51, pp. 91-100, 2016.