Stenomacrus Förster, 1869

Varga, Oleksandr, 2024, Review of the genus Stenomacrus Förster, 1869 (Hymenoptera: Ichneumonidae: Orthocentrinae) from Kenya and Burundi: a first step to understanding the diversity of the genus in the Afrotropics, European Journal of Taxonomy 958, pp. 177-202 : 179

Genus Stenomacrus Förster, 1869

Diagnosis

Face smooth, aciculate or granulate. Subocular sulcus usually distinct. Clypeus from flat to weakly convex, distinctly separated to almost completely fused with face, its lower edge straight or truncate, thus labrum always visible. Axis of mandible strongly twisted; lower tooth small and hardly visible or completely reduced. Temples very short and strongly narrowed behind eyes to buccate in dorsal view. Mesoscutum densely, but sometimes partly (only anteriorly) pubescent; notauli usually absent. Scutellum basally from arched to straight. Epicnemial carina always present but sometimes short. Pleural carina usually complete but sometimes partly or entirely reduced. Propodeum distinctly carinated (lateromedian longitudinal and apical transverse carinae present) or almost completely lacking carinae. Fore wing with vein 3rs-m present or absent; hind wing with nervellus not intercepted or intercepted. First metasomal tergite from almost entirely smooth to granulate, rugulose or longitudinally wrinkled; latero-median longitudinal carinae from developed to almost entirely absent; lateral oblique grooves usually present, weak to deep. Second tergite weakly sculptured only basally to distinctly sculptured almost to apex. Ovipositor sheath from about 0.4 × to 0.9 × as long as hind tibia, basal part usually flexible, apical part widened and pubescent.