A new remarkably preserved fossil assassin bug (Insecta, Heteroptera, Reduviidae) from the Eocene Green River Formation of Colorado

Swanson, Daniel R.; Heads, Sam W.; Taylor, Steven J.; Wang, Yinan

doi:10.1002/spp2.1349

Cited by 2 publications

(2 citation statements)

References 46 publications

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“…The geological context of Myanmar amber (Cruickshank & Ko 2003, Yu et al 2019) and of the Green River Formation (Cole & Picard 1978;Grande 1984Grande , 2013Swanson et al 2021) has been explained in detail in various previous works.…”

Section: Methodsmentioning

confidence: 99%

Summary of the fossil record of megalopteran and megalopteran-like larvae, with a report of new specimens

Baranov¹,

Haug²,

Fowler³

et al. 2022

Bull. Geosci.

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All adult mega lopterans have prominently equal-sized wings. Adult dobsonflies (Corydalinae, ingroup of Corydalidae) are conspicuous by their huge protruding mandibles, probably involved in sexual (female) choice, as well as a very large body size and wingspan, reaching 180 mm (Cao & Liu 2013, Heckman 2017).The monophyly of Megaloptera was brought into question several times in recent years based on molecular (Winterton et al. 2010) and morphological data (Beutel & Friedrich 2008, Beutel et al. 2013). Yet, most of the contemporary sources do agree that Sialidae + Corydalidae is a monophyletic group, i.e. Megaloptera, which is either the sister group to Neuroptera + Raphidioptera or only to the former (

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Section: Methodsmentioning

confidence: 99%

Summary of the fossil record of megalopteran and megalopteran-like larvae, with a report of new specimens

Baranov¹,

Haug²,

Fowler³

et al. 2022

Bull. Geosci.

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“…In addition to the assassin bug, this fossil also has a rove beetle larva next to it, which belongs to Coleoptera, and although it is documented that the assassin bugs prey on Coleoptera as well (Youssef and Abd-Elgayed, 2015;Loko et al, 2022), there is no direct evidence that this assassin bug was preying on the rove beetle larva in this fossil, but the leg of the assassin bug was in contact with the carapace of the larva. Coincidentally, the assassin bug fossil documented by Swanson also shows Coleoptera (Swanson et al, 2021), and the leg of the assassin bug is also in contact with the body of the beetle.…”

Section: Systematic Paleontologymentioning

confidence: 99%

The Oldest Fossils From China Provide the Most Direct Evidence for the Ancestral State of Fossula Spongiosa and Stridulitrum of Reduviidae

et al. 2022

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This study describes a new genus Simplicivenius gen. nov. of Reduviinae with two new species, Simplicivenius tuberculosus sp. nov. and Simplicivenius rectidorsius sp. nov. from the Yixian Formation in northeastern China. The diagnosis of the genus includes the width of the scutellum about 2/3 of the width of the pronotum and the absence of longitudinal veins around the exterior cell of the membrane. This is the oldest fossil record of Reduviinae and indeed Reduviidae at present, dating back to the Early Cretaceous. This implies that Reduviinae existed before the Late Cretaceous biological mass extinction, hinting that Reduviinae may be a basal taxon within the Higher Reduviidae. Moreover, the fossils prove the correctness of the previous speculations on the ancestral state of the stridulitrum and the fossula spongiosa of the assassin bugs. The fossula spongiosa on the mid leg and fore leg are subequal in size and both occupy 1/3 of the tibia is considered the primitive type of fossula spongiosa.

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A new remarkably preserved fossil assassin bug (Insecta, Heteroptera, Reduviidae) from the Eocene Green River Formation of Colorado

Cited by 2 publications

References 46 publications

Summary of the fossil record of megalopteran and megalopteran-like larvae, with a report of new specimens

Summary of the fossil record of megalopteran and megalopteran-like larvae, with a report of new specimens

The Oldest Fossils From China Provide the Most Direct Evidence for the Ancestral State of Fossula Spongiosa and Stridulitrum of Reduviidae

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