The first fossil New World Dixidae with a critical discussion of generic definitions

Greenwalt, Dustin A.

doi:10.26879/656

Cited by 6 publications

(6 citation statements)

References 16 publications

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“…Culicidae, of which over 70 specimens have been collected from the Coal Creek Member, have not been recorded as described species from either the Florissant or the Okanagan. Specimens of the families Dixidae Schiner, 1868, and Bolitophilidae Winnertz, 1863, both described from the Kishenehn Formation (Greenwalt and Moulton, 2016;Greenwalt and Blagoderov, 2019), have not been reported from any of the three North American Lagerstätten. There appears to be a taphonomic size bias such that specimens greater than 1 cm in length are rarely preserved in the Kishenehn Formation.…”

Section: Discussionmentioning

confidence: 99%

Diptera of the middle Eocene Kishenehn Formation. I. Documentation of diversity at the family level

Greenwalt¹,

Bickel

Kerr

et al. 2019

Palaeontol Electron

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The Coal Creek Member of the Kishenehn Formation in northwestern Montana, USA, is an emerging middle Eocene Lagerstätte. While fish, plant, mammal and molluscan fossils are present, the most numerous and well-preserved fossils are those of insects. In this study, we initiate an effort to enumerate, at the family level, the diversity of flies (Insecta: Diptera) at this locality. Seventeen specimens from 17 different families (15 families with Limoniinae and Cylindrotominae within Tipulidae s.l.), 15 new species and three new genera are described. These include Tipula fji sp. nov. (Tipulidae), Ellipteroides kishenehn sp. nov. (Limoniidae), Cyttaromyia lynnae sp. nov. (Cylindrotomidae), Sylvicola silibrarius sp. nov. (Anisopodidae), Efcookella nigra sp. nov. (first fossil known in the genus) (Scatopsidae), Bibiodes kishenehnensis sp. nov. (Bibionidae), Eosciarites hermes gen. et sp. nov. (Sciaridae), Rymosia hypnolithica sp. nov. (Mycetophilidae), Litoleptis araeostylus sp. nov. (Rhagionidae), Kishenehnoasilus bhl gen. et sp. nov. (Asilidae), Drapetis adelomedos sp. nov. (Hybotidae), Salishomyia eocenica gen. et sp. nov. (Dolichopodidae), Agathomyia eocenica sp. nov. (first known fossil in genus) (Platypezidae), Lonchoptera eocenica sp. nov. (Lonchopteridae) and Aenigmatias kishenehnensis sp. nov. (Phoridae). Two specimens in the families Psychodidae and Pipunculidae are described but not assigned to a genus. In addition, we revise several related fossil species housed at the NMNH. Asilopsis fusculus Cockerell, 1921, formerly described in Asilidae, is transferred to Cyttaromyia (Cylindrotomidae) as C. fuscula, Sciara florissantensis Cockerell, 1917 is assigned to Sciaroidea incertae sedis, and Sciara gurnetensis Cockerell, 1916, Sciara lacoei Cockerell, 1915 and Sciara protoberidis Cockerell, 1915, are assigned to Sciaridae incertae sedis. Given their diversity and high degree of preservation, continued characterization of the Coal Creek Member fossils may help elucidate the Eocene radiation of Diptera in North America.

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Section: Discussionmentioning

confidence: 99%

Diptera of the middle Eocene Kishenehn Formation. I. Documentation of diversity at the family level

Greenwalt¹,

Bickel

Kerr

et al. 2019

Palaeontol Electron

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“…Nine of these morphotypes represent formally described species. Among the latter are two species of Culicidae, four of Dixidae, two of Chironomidae and a single species of Chaoboridae (Harbach and Greenwalt, 2012;Greenwalt and Moulton, 2016;Greenwalt et al, 2019;data herein). In general, the species diversity of Culicomorpha in the formation is relatively low, which, in combination with their high abundance, provides us with additional information on the palaeoenvironment of the formation.…”

Section: Taxonomic Diversity Of the Group Culicomorpha In The Kishenehn Formationmentioning

confidence: 94%

“…In total, there are now 14 morphotypes of the culicomorphans recorded from the formation (Harbach and Greenwalt, 2012;Greenwalt and Moulton, 2016;Greenwalt et al, 2019;data herein). Nine of these morphotypes represent formally described species.…”

Section: Taxonomic Diversity Of the Group Culicomorpha In The Kishenehn Formationmentioning

confidence: 99%

“…Here we deal with representatives of the Culicomorpha (midges and mosquitoes), which make up over 50% of the fossil insects in the formation. Several species of the culicomorphan ingroups Culicidae and Dixidae have already been described (Harbach and Greenwalt, 2012;Greenwalt et al, 2014;Greenwalt and Moulton, 2016). In total, five major culicomorphan families have been recorded in the Kishenehn Formation: Ceratopogonidae, Chaoboridae, Chironomidae, Culicidae, and Dixidae (Greenwalt et al, 2014(Greenwalt et al, , 2019.…”

Section: Introductionmentioning

confidence: 99%

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Diversity of culicomorphan dipterans in the Eocene Kishenehn Konservat-Lagerstätte (Montana, USA) and its palaeoecological implications

Baranov

Haug

Greenwalt³

et al. 2022

Palaeontol Electron

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This report highlights the eight new morphotypes of culicomorphan dipterans from USA) This report highlights the eight new morphotypes of culicomorphan dipterans from the 46-million-year-old Kishenehn Formation (Montana, USA). Five of these morphotypes are non-biting midges of the family Chironomidae (cf. Conchapelopia, cf. Psectrotanypus, Hintelmanniella noncatafractata sp. nov., cf. Tanytarsus, and Rheotanytarsus lacustris sp. nov.), one morphotype is a biting midge of the family Ceratopogonidae (cf. Alluaudomyia), one is a phantom midge of the family Chaoboridae (Chaoborus kishenehnicus sp. nov.), and the last one is a true mosquito, family Culicidae (Neoculex). We discuss implications of the diversity and abundance of representatives of Culicomorpha in the Formation for understanding the palaeoecology of the deposit. Abundance of Chaoboridae and presence of the seemingly surface skating Chioronomidae indicate a large, lacustrine habitat.

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“…Taxa may be identified using the following references: Chaoboridae (Sæther 1972, larvae, pupae, adults), Corethrellidae (Borkent 2008, adults; McKeever and French 1991, larvae, pupae), Culicidae (Mattingly 1971, larvae, pupae, adults to genus; Wood et al 1979, larvae, adults) Chironomidae (Wiederholm 1986, 1989, pupae, adults to genus; Andersen et al 2013, larvae to genus), Ceratopogonidae (Downes and Wirth 1981, adults to genus; Borkent 2014, pupae to genus), Simuliidae (Adler et al 2004, larvae, pupae, adults), and Thaumaleidae (Arnaud and Boussy 1994, Pivar et al 2018, Sinclair 1996, adults). Dixidae are poorly understood and require fundamental revision (Greenwalt and Moulton 2016).…”

Section: Nematocerous Dipteramentioning

confidence: 99%

Diptera of Canada

Savage¹,

Borkent²,

Brodo³

et al. 2019

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The Canadian Diptera fauna is updated. Numbers of species currently known from Canada, total Barcode Index Numbers (BINs), and estimated numbers of undescribed or unrecorded species are provided for each family. An overview of recent changes in the systematics and Canadian faunistics of major groups is provided as well as some general information on biology and life history. A total of 116 families and 9620 described species of Canadian Diptera are reported, representing more than a 36% increase in species numbers since the last comparable assessment by JF McAlpine et al. (1979). Almost 30,000 BINs have so far been obtained from flies in Canada. Estimates of additional number of species remaining to be documented in the country range from 5200 to 20,400.

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The first fossil New World Dixidae with a critical discussion of generic definitions

Cited by 6 publications

References 16 publications

Diptera of the middle Eocene Kishenehn Formation. I. Documentation of diversity at the family level

Diptera of the middle Eocene Kishenehn Formation. I. Documentation of diversity at the family level

Diversity of culicomorphan dipterans in the Eocene Kishenehn Konservat-Lagerstätte (Montana, USA) and its palaeoecological implications

Diptera of Canada

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