A new megaspilid wasp from Eocene Baltic amber (Hymenoptera: Ceraphronoidea), with notes on two non-ceraphronoid families: Radiophronidae and Stigmaphronidae

Bibliographic Details
Title: A new megaspilid wasp from Eocene Baltic amber (Hymenoptera: Ceraphronoidea), with notes on two non-ceraphronoid families: Radiophronidae and Stigmaphronidae
Authors: István Mikó, Thomas van de Kamp, Carolyn Trietsch, Jonah M. Ulmer, Marcus Zuber, Tilo Baumbach, Andrew R. Deans
Source: PeerJ, Vol 6, p e5174 (2018)
Publisher Information: PeerJ Inc., 2018.
Publication Year: 2018
Collection: LCC:Medicine
LCC:Biology (General)
Subject Terms: Parasitic hymenoptera, Megaspilidae, 3D reconstruction, Lutetian, Lower Cretaceous, Early Cretaceous, Medicine, Biology (General), QH301-705.5
More Details: Ceraphronoids are some of the most commonly collected hymenopterans, yet they remain rare in the fossil record. Conostigmus talamasi Mikó and Trietsch, sp. nov. from Baltic amber represents an intermediate form between the type genus, Megaspilus, and one of the most species-rich megaspilid genera, Conostigmus. We describe the new species using 3D data collected with synchrotron-based micro-CT equipment. This non-invasive technique allows for quick data collection in unusually high resolution, revealing morphological traits that are otherwise obscured by the amber. In describing this new species, we revise the diagnostic characters for Ceraphronoidea and discuss possible reasons why minute wasps with a pterostigma are often misidentified as ceraphronoids. Based on the lack of ceraphronoid characteristics, we remove Dendrocerus dubitatus Brues, 1937, Stigmaphronidae, and Radiophronidae from Ceraphronoidea and consider them as incertae sedis. We also provide some guidance for their future classification.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 2167-8359
Relation: https://peerj.com/articles/5174.pdf; https://peerj.com/articles/5174/; https://doaj.org/toc/2167-8359
DOI: 10.7717/peerj.5174
Access URL: https://doaj.org/article/d7ac9d322b2945f8bf113d00a1e20757
Accession Number: edsdoj.7ac9d322b2945f8bf113d00a1e20757
Database: Directory of Open Access Journals
More Details
ISSN:21678359
DOI:10.7717/peerj.5174
Published in:PeerJ
Language:English