Crassibethylus dominicanus, Barbosa & Melo, 2023

Barbosa, Diego N. & Melo, Gabriel A. R., 2023, Revision of Bethylinae from Dominican amber, with description of a new genus (Hymenoptera, Bethylidae), Journal of Hymenoptera Research 96, pp. 167-180 : 167

† Crassibethylus dominicanus sp. nov.

Figs 2 , 3

Type material.

Holotype female, amber inclusion from the Dominican Republic (DZUP Dom-024). Specimen complete and very well preserved. Syninclusions: one small spider and a springtail.

Description.

Holotype. Female. Body length 3.2 mm; forewing 1.95 mm long. Color. Wings clear hyaline; antenna, mandible, palpi, tegula, legs, and wing venation light castaneous; metasoma castaneous; head and mesosoma dark castaneous. Head. Head as long as wide in dorsal view, triangular-shaped in both frontal and lateral views. Mandible narrow and evenly wide along its extension. Clypeus with median lobe rounded, well projected; median carina well developed, continuous with frontal carina; lateral lobe inconspicuous. Antenna with flagellar pubescence sparse, with few outstanding erect setae; scape 3.0 × longer than pedicel; pedicel as long as first flagellomere; flagellomeres subequal in length. Eye not protruding, elliptical, large, and glabrous; area between anterior margin of eye and demarcation of median clypeal lobe clearly concave. Frons coriaceous and finely punctate. Posterior ocelli close to vertex crest; anterior angle of ocellar triangle obtuse; anterior ocellus aligned with upper tangent of eyes. Vertex crest straight, sparse thick setae at corner. Hypostomal carina straight. Mesosoma. Pronotum wider than long, coriaceous and finely punctate; anterior corner angled. Metapectal-propodeal complex with lateral marginal carina. Wings. Forewing with R2 cell longer than 1Cu2 cell; only one longitudinal flexion line present, not forming rectangular area. Metasoma. About 2.3 × longer than wide, polished, whole surface glabrous. Genitalia with 3vv narrow and longer than wide.

Male. unknown.

Etymology.

The specific epithet Crassibethylus dominicanus is an allusion to the Dominican Republic, country from the where the amber piece originated.

Figures

Figure 2. † Crassibethylus dominicanus gen. et sp. nov. Female holotype A dorsal habitus B lateral habitus C head and mesosoma, in dorsal view D wings and metasoma, in frontal view. Scale bars: 1 mm (A); 0.2 mm (C); 0.5 mm (D). A, B at same scale.

Figure 3. † Crassibethylus dominicanus gen. et sp. nov. Female holotype A head, in frontal view B mesosoma, in lateroventral view C head and mesosoma, in dorsal view D head and protorax, in lateroventral view. Scale bars: 0.5 mm (A); 0.2 mm (D). A-C at same scale.