Ohlhoffiidae, a new Cretaceous family of basal parasitic wasps (Hymenoptera: Stephanoidea)

Abstract

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A new fossil family of aculeate wasp sheds light on early evolution of Apoidea (Hymenoptera)

“…Taking examples from Hymenoptera, many higher taxa that have been proposed in the last few years, such as the †Aptenoperissidae, †Myanmarinidae, †Burmorussidae, †Ohlhoffiidae, †Othniodellithidae, †Burmusculidae and †Panguidae, have been considered as endemic elements that evolved while the Burma terrane was isolated from other landmasses (e.g. Jouault et al, 2021; Rasnitsyn & Öhm‐Kühnle, 2018, 2021; Zhang et al, 2018). Under an alternative hypothesis, as advocated recently by Lepeco and Melo (2021) for †Holopsenellidae, most of these taxa simply seem to represent archaic lineages, belonging to a once‐widespread biota, that somehow survived to the end of the Early Cretaceous in the Burma terrane.…”

Including fossils in phylogeny: a glimpse into the evolution of the superfamily Evanioidea (Hymenoptera: Apocrita) under tip-dating and the fossilized birth–death process

“…Both lineages show a shift in fossil abundance after the Cretaceous (Jouault et al, 2021b). Ichneumonoidea and Evanioidea are known from numerous specimens in the highly fossiliferous Burmese amber, representing respectively 2.4% and 5.2% of the valid species (Jouault et al, 2021b). Thus it seems that the dominance of the ichneumonoids occurred during the middle to Late Cretaceous even if the evanioids are already abundant during this period (Tabl.…”

“…Although incomplete, the fossil record suggests that the evanioid diversity was important during the Jurassic and decreased after the Cretaceous (Li et al, 2018;Jouault et al, 2021b). It is assumed that this change in diversification pattern was likely due to the diversification and expansion of a potentially competitive group, the Ichneumonoidea (Jouault et al, 2021b). Both lineages show a shift in fossil abundance after the Cretaceous (Jouault et al, 2021b).…”

“…It is assumed that this change in diversification pattern was likely due to the diversification and expansion of a potentially competitive group, the Ichneumonoidea (Jouault et al, 2021b). Both lineages show a shift in fossil abundance after the Cretaceous (Jouault et al, 2021b). Ichneumonoidea and Evanioidea are known from numerous specimens in the highly fossiliferous Burmese amber, representing respectively 2.4% and 5.2% of the valid species (Jouault et al, 2021b).…”