Notes on rhopalosomatid wasps of Dominican and Mexican amber (Hymenoptera: Rhopalosomatidae) with a description of the first fossil species of Rhopalosoma Cresson, 1865

Volker Lohrmann (1) , Michael Ohl (2) , Peter Michalik (3) , James Pitts (3) , Laurent Jeanneau (4) , Vincent Perrichot (4)

1 Übersee-Museum Bremen
2 Museum für Naturkunde - Leibniz Institute for Evolution and Biodiversity Science
3 Universität Greifswald - University of Greifswald
4 GR - Géosciences Rennes

Rhopalosomatidae are a family of aculeate wasps that are ectoparasitoids of crickets as larvae and are predominantly distributed pantropically. The published fossil record of the family is scarce. Here, we report three new fossil rhopalosomatid wasp specimens from Dominican and Mexican amber. Rhopalosoma hispaniola Lohrmann sp. nov. is described and documented from Dominican amber by two separate inclusions-one of each sex. An additional fossil female Rhopalosoma is described and documented from Mexican amber but is not named due to the insufficient preservation of the fossil. The new fossils, which are morphologically intermediate between Townes' isopus and poeyi species groups, do not only represent the first fossil records of an ex-tant genus of this peculiar family but also the first records of the family in Dominican and Mexican amber.

Keywords: GEOF

Domains: Sciences of the Universe [physics]; Earth Sciences; Paleontology

Volker Lohrmann, Michael Ohl, Peter Michalik, James Pitts, Laurent Jeanneau, et al.. Notes on rhopalosomatid wasps of Dominican and Mexican amber (Hymenoptera: Rhopalosomatidae) with a description of the first fossil species of Rhopalosoma Cresson, 1865. Fossil Record, 2019, 22 (1), pp.31-44. ⟨10.5194/fr-22-31-2019⟩. ⟨insu-02135631⟩