Radiophronidae

Ortega-Blanco, Jaime, Rasnitsyn, Alexander P. & Delclòs, Xavier, 2010, A new family of ceraphronoid wasps from Early Cretaceous Álava Amber, Spain, Acta Palaeontologica Polonica 55 (2), pp. 265-276 : 267

Family Radiophronidae nov.

Type genus: Radiophron nov.

Diagnosis.—Head globular, not extremely flattened, hypognathous, without acute hind vertical margin. Lateral ocelli elongate, separated less than one ocellar distance from the compound eye. Nine flagellomeres in both sexes. Fore wings with wide pterostigma, venation reduced to Rs long and well defined, and C and R veins not fused laying a more or less wide costal cell. Hind coxae flattened and slightly elongate, not reaching completely the dorsum of metasoma, then not obscuring completely the lateral view of propodeum. Hind femur moderately widened medially but not extremely flattened and sub−triangular as in Stigmaphronidae . Tibial spur combination 2−2−2. Hind tibia of normal proportion in respect to tarsi (not half length as in most Stigmaphronidae ), slender, moderately widened distally, with tibial spurs not elongate. Six metasomal segments sub−equal in length (apparent first slightly longer) without a reduced first forming a carinated system over the second. Females with short internal ovipositor. Male genitalia exposed except basally in both males available: this might be their normal position because of elongation of gonostyli. Gonostylus long (longer than in other ceraphronoids), paddle shaped, arching, with apex rounded and bearing several setae, narrow and possibly immovably fused with gonocoxae which are much shortened along with volsellae and penis valves. Gonocoxa short, hardly visible in exposed genitalia, toothed digitus apparently present.