Stephanogaster sp.

Taxonomy

Parasitic wasp

Kingdom: Animalia
Phylum: Arthropoda Latreille 1829
Class: Insecta Linnaeus 1758
Order: Hymenoptera Linnaeus, 1758
Family: Ephialtitidae Handlirsch, 1906
Genus: Stephanogaster
Species: Stephanogaster sp.

Geological Time Scale

Eon: Phanerozoic
Era: Mesozoic
Period: Jurassic
Sub Period: None
Epoch: Middle
International Age: Callovian to Oxfordian

Stratigraphy

Jiulongshan Formation
Daohugou Bed

Provenance

Acquired by: Purchase/Trade

Location

Daohugou (Village)
Ningcheng (County)
Inner Mongolia (Province)
China

• daohugou
• inner mongolia
• jiulongshan
• jurassic
• ningcheng
• stephanogaster
• TFF-oilshale-Ar2899

Comments

Taxonomy from Li et al., 2019.
Enended diagnosis for the genus from Li et. al., 2019, p. 569: "Antenna filiform with over 20 antennomeres. Forewing venation complete, 1r-rs complete (rudimentary) or lost, 1-Rs sub-vertical to Rs, base of 2rm nearly at level of pterostigma base, 1cu-a interstitial or slightly postfurcal. Hindwing with 1-Rs longer than r-m, 1-M slightly bent. Metasoma widest distal of its middle, with first metasomal segment wide basally and either columnar or truncated conical in shape. Ovipositor long, usually longer than metasoma or whole body."

Line drawing of the forewing of Stephanogaster ningchengensis Ding, Zheng, Zhang & Zhang, 2013; from Li et al., 2019, p. 577.

Scale bar 1 mm.

References:
RASNITSYN, A.P. & ZHANG, H.C., (2010). Early evolution of Apocrita (Insecta, Hymenoptera) as indicated by new findings in the Middle Jurassic of Daohugou, Northeast China. Acta Geologica Sinica (English Edition) 84, 834–873.

DING, M., ZHENG, D.R., ZHANG, Q. & ZHANG, H.C. (2013). A new species of Ephialtitidae (Insecta: Hymenoptera: Stephanoidea) from the Middle Jurassic of Inner Mongolia, China. Acta Palaeontologica Sinica 52, 51–56. (Chinese with English abstract).

Li, L., Shih, C., Li, D., & Ren, D. (2019). New fossil species of Ephialtitidae and Baissidae (Hymenoptera, Apocrita) from the mid-Mesozoic of northeastern China. Alcheringa: An Australasian Journal of Palaeontology, 43(4), 568–579. https://doi.org/10.1080/03115518.2019.1601767