Radiophron ibericus, Ortega-Blanco & Rasnitsyn & Delclòs, 2010

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 : 267-270

publication ID

https://doi.org/ 10.4202/app.2009.0014

persistent identifier

https://treatment.plazi.org/id/03FB115F-FF80-9D4C-FC8D-FC65FBA6F96E

treatment provided by

Felipe

scientific name

Radiophron ibericus
status

sp. nov.

Radiophron ibericus sp. nov.

Figs. 1–3.

Etymology: After the place they have been found for first time, the Iberian Peninsula.

Type material: Holotype: MCNA 8754. Female. Specimen preserved in a yellow−brown polished drop of amber of 2.5 × 2 × 1 mm. Well preserved except for a fracture that affects the left hind femur and another fracture that obscures the head view from below. Paratypes: MCNA 8789, MCNA 8989, MCNA 9561, MCNA 9576, MCNA 13030.1, and MCNA 13030.2. Females. Well preserved specimens, all included in translucent dusty amber embedded in polished prisms of epoxy resin (except MCNA 9576).

Type locality: Peñacerrada I, close to Moraza village .

Type horizon: Escucha Formation.

Diagnosis.—As for the genus.

Referred material.—Specimen MCNA 8760 ( Figs. 2 View Fig , 3 View Fig ) is a well preserved but somewhat deformed Radiophron male, which lacks just tarsi of left foreleg, mid legs, and left hind leg. It shows very subtle differences with R. ibericus sp. nov. females and these differences may be easily due to sexual dimorphism and weak compression, hence this specimen is presented as referred material as it does not seem to have enough differences for placing it in a new species. It differs from females mostly by its more quadrate frontal view of head, with striated ornamentation, with two depressed areas on the frons which can be a result of the amber deformation; flagellomeres more compressed; ratio of hind tarsomeres, from basitarsus, 1: 0.4: 0.3: 0.2: 0.3; gaster dorso−ventrally flattened, with genitalia protruded except very basally, gonostylus weakly arching, ca. 4 times as long as maximal width, sub−apically about 1.5 times as wide as medially, with apex rounded, gonocoxal plates reaching near basal quarter of doi:10.4202/app.2009.0014

doi:10.4202/app.2009.0014

gonostylus, with distal margins meeting at about 120 ° medially, penis and volsellae not visible, probably very short.

Description.—Female. Body length between 2.2 and 1.68 mm (mean from the 7 females: 1.97 mm). Head with minute punctured sculpture, wider than mesosoma, partially placed under it; concave occiput with evident preoccipital carina. Compound eyes occupying 2/3 of lateral surface of head. Ocelli well distant from each other, lateral ones elongate separated for less than one ocellar length from the compound eye margin and for three ocellar lengths from the circular median ocellus. Antennae elbowed between scape and pedicel; scape with distal half ventrally widened, almost half as long as flagellum and about as long as shorter eye diameter; nine flagellomeres all near−squared, gradually increasing in size except for the first being almost half as long as the second, with constricted base, and for last one being longer than wide, tapered apically. Maxillary palps 6−segmented, elbowed between third and fourth segments.

Mesosoma with mesoscutum and scutellum highly elevated, sloping sub−vertical from scutellar apex toward metasomal articulation, with hind surface somewhat concave, with no teeth or structures seen at the angle. Punctured sculpture over all dorsal and lateral mesosomal sclerites. Pronotum not visible in dorsal view. Mesonotum with medial longitudinal sulcus well impressed, reaching both margins. Notauli present, widely separated at transverse scutal suture. Axillae long and wide, touching antero−medially. Scutellum almost half as long as of mesonotum, anteriorly not reaching transverse mesonotal suture and posteriorly not covering the dorsal view of propodeum.

Wings covered by microtrichia. Fore wing showing thin tubular C and Sc+R quite arched and very wide at contact with pterostigma, leaving a wide costal space. Pterostigma roughly three times as long as wide, semicircular except for the distal 2/5 obliquely truncated. R slightly extending beyond pterostigma, leaving 3r cell not margined at wing anterior margin. Rs+2r−rs arising oblique from the basal inflexion point of curvature of pterostigma, curved with no angle, faintly reaching wing margin. Hind wing with at least one tubular vein (R) basally and three medial hamuli.

Legs moderately setose. Hind coxa flattened and moderately widened, partly covering lateral view of propodeum. Hind trochanter curved, cylindrical, large and wide. Hind femur swollen, laterally slightly flattened, wider in the basal medial part, without row of hard setae either lateral or on ventral distal margin. All tibia slender, subtle widened distally. Tibial spur combination 2−2−2. Tarsomeres with two, anterior and posterior, apical setae, with no comb of harder setae or striated sculpture. Hind tarsal proportions from basitarsus on 1: 0.5: 0.4: 0.3: 0.4. Claw simple.

Metasoma nearly as long as mesosoma, inserted low on propodeum just above coxae; fusiform with rounded base and convex dorsum, six segmented, first one the largest, following ones gradually narrowing, with apical one weakly sclerotized. No spiracles visible.

Geographic and stratigraphic range.—Exclusively from the type locality and type horizon.

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