Cretevania bechlyi Jennings, Krogmann & Mew

Jennings, John T., Krogmann, Lars & Mew, Steven L., 2013, Cretevania bechlyi sp. nov., from Cretaceous Burmese amber (Hymenoptera: Evaniidae), Zootaxa 3609 (1), pp. 91-95 : 92

Cretevania bechlyi Jennings, Krogmann & Mew , sp. nov.

Figures 1–3 .

Holotype: Specimen SMNS BU-2, in Cretaceous amber from Myanmar ( Burma). Deposited in the State Museum of Natural History Stuttgart.

Small wasp distinguished from other Cretevania by absence of notauli; antennae with 10 flagellomeres, not broader distally; petiole very long and thin, 11.8× longer than wide, and the following combination of fore wing characters: (1) pterostigma 4.5× longer than wide, (2) first submarginal cell 2.85× longer than wide, (3) vein 2RS nearly straight, (4) first marginal cell 4.4× longer than wide at base, (5) 1CU 1.9× length 1m-cu, (6) 1r-rs straight (i.e., not concave), arising near the pterostigma apex, (7) vein 2M nearly concave subbasally, (8) vein 2CU+3CU slightly changing its slope distally, and (9) wing apex rounded.

Etymology. The species epithet is named for Günter Bechly (State Museum of Natural History Stuttgart).

Description. Female fully winged and of small body size (total length 4.0 mm); body and gaster dark brown. Head 0.70 mm in height, mesosoma 1.35 mm in length, metasoma 2.2 mm in length; head 2.0× as wide as long; vertex 0.40× head width; compound eye 0.75 mm in height, distance between eyes 0.52 mm; distance of lateral ocellus to compound eye 0.08 mm; occipital carina narrow, complete; malar space 0.27× height of compound eye; antennae inserted slightly above mid-line of eye, toruli almost touching; distance from torulus to eye 0.12 mm; antennae uniformly thickened, with 10 flagellomeres; scape 0.45 mm in length; pedicel 2.5× longer than wide, 0.09 mm in length, first flagellomere 0.21 mm in length; flagellomeres longer than wide. Mesoscutum and mesoscutellum apparently smooth; notauli approximately parallel, percurrent, each notaulus indicated by shallow groove; propodeum areolate. Petiole subcylindrical, long and thin, length 11.8× max. width, 0.73× length of the remaining metasoma (i.e. gaster), distal third of petiole ventrolaterally expanded; gaster smooth, elliptical. Fore wing venation relatively complete: first marginal cell 4.4× longer than wide at base; first submarginal cell triangular and broad (length 2.85× max. width); 2m-cu absent; second submarginal cell separated from first discal cell; 3M and 2CU+3CU extending to wing margin; 1r-rs straight and near the pterostigma apex; pterostigma narrow, about 4.5× as long as wide; 3RS+4RS straight; 1m-cu nearly aligned with 2RS; 2cu-a angled towards wing base; 2m-cu absent; 1CU straight; 1CU 1.9× length 1m-cu. Legs elongate; hind leg robust; hind tibia slightly wider apically; distance between fore and mid coxae about equal to distance between mid and hind coxae, pretarsal claws short, slender, simple, arolium present. Mid and hind trochantellus conspicuously enlarged. Ovipositor exserted, dorsally bent over metasoma, 2.65 mm in length.

Figures

FIGURES 1 – 2. Cretevania bechlyi Jennings, Krogmann & Mew, sp. nov. (1) lateral habitus (right side); (2) dorsal habitus. Scale bars = 1 mm.

FIGURE 3. Cretevania bechlyi Jennings, Krogmann & Mew, sp. nov., right fore wing. * = first discal cell.