The Mesozoic Family Eremochaetidae (Diptera: Brachycera) in Burmese Amber and Relationships of Archisargoidea: Brachycera in Cretaceous Amber, Part VIII

ABSTRACT All 16 species of the family Eremochaetidae occur from the Late Jurassic to the mid-Cretaceous of eastern and Central Asia. The first species in amber, and the latest occurrence of the family, was recently described as Zhenia xiai, from the mid-Cretaceous of Myanmar, ca. 100 Ma. New observations of a finely preserved specimen allow refinement of the morphological interpretations in the original description. The female of Zhenia, for example, has the distinctive piercing oviscapt of the superfamily Archisargoidea, formed from modified cerci (not tergites 8 and 9 as originally reported). The pretarsus of Zhenia bears an enormous empodial pad and pair of pulvillae, but the claws are highly vestigial (contra Zhang et al., 2016). The fly was almost certainly a parasitoid. A cladistic analysis of 26 binary-state characters and six continuously variable characters, using 47 exemplar Archisargoidea species from most genera and all four families, and five outgroup Brachycera, has very poor support for most clades but confirms the position of Zhenia in Eremochaetidae. Evidence on the relationships of Archisargoidea to other Brachycera is reviewed, and a close relationship to the Nemestrinoidea or Muscomorpha is best supported. A catalog of the species and some higher taxa of Archisargoidea is provided.

[1]  Yitao Feng,et al.  An endoparasitoid Cretaceous fly and the evolution of parasitoidism , 2016, The Science of Nature.

[2]  Junfeng Zhang.  Archisargoid flies (Diptera, Brachycera, Archisargidae and Kovalevisargidae) from the Jurassic Daohugou biota of China, and the related biostratigraphical correlation and geological age , 2015 .

[3]  Zheng Minrui,et al.  Burmese Amber from Hti Lin , 2015 .

[4]  Junfeng Zhang.  New male eremochaetid flies (Diptera, Brachycera, Eremochaetidae) from the Lower Cretaceous of China , 2014 .

[5]  D. Ren,et al.  New short-horned flies (Diptera: Eremochaetidae) from the Early Cretaceous of China. , 2014, Zootaxa.

[6]  D. Grimaldi,et al.  Age constraint on Burmese amber based on U–Pb dating of zircons , 2012 .

[7]  Junfeng Zhang.  Distinct But Rare Archisargid Flies from Jurassic of China (Diptera, Brachycera, Archisargidae) With Discussion of the Systematic Position of Origoasilus Pingquanensis ZHANG ET AL., 2011 , 2012, Journal of Paleontology.

[8]  D. Yeates,et al.  Calosargus talbragarensis New Species: the First Brachyceran Fly from the Jurassic of Australia (Diptera, Archisargidae) , 2012, Journal of Paleontology.

[9]  Junfeng Zhang.  Orientisargidae fam. n., a new Jurassic family of Archisargoidea (Diptera, Brachycera), with review of Archisargidae from China , 2012, ZooKeys.

[10]  D. Grimaldi,et al.  Brachyceran Diptera (Insecta) in Cretaceous ambers, Part IV, Significant New Orthorrhaphous Taxa , 2011, ZooKeys.

[11]  D. Ren,et al.  A New Brachyceran Family Origoasilidae Fam. Nov. from the Late Mesozoic of China (Insecta: Diptera) , 2011 .

[12]  Markus Friedrich,et al.  Episodic radiations in the fly tree of life , 2011, Proceedings of the National Academy of Sciences.

[13]  Junfeng Zhang.  Three distinct but rare kovalevisargid flies from the Jurassic Daohugou biota, China (Insecta, Diptera, Brachycera, Kovalevisargidae) , 2011 .

[14]  Junfeng Zhang.  New species of Palaeobolbomyia Kovalev and Ussatchovia Kovalev (Diptera, Brachycera, Rhagionidae) from the Callovian-Oxfordian (Jurassic) Daohugou biota of China: Biostratigraphic and paleoecologic implications , 2010 .

[15]  D. Ren,et al.  New archisargids from China (Insecta: Diptera) , 2010 .

[16]  D. Ren,et al.  An evolutional special case in the lower Orthorrhapha: some attractive fossil flies from the Middle Jurassic of China (Insecta: Diptera: Brachycera) , 2010 .

[17]  Jun Zhang.  Records of bizarre Jurassic brachycerans in the Daohugou biota, China (Diptera, Brachycera, Archisargidae and Rhagionemestriidae) , 2010 .

[18]  D. Ren,et al.  A new species of Archirhagio Rohdendorf, 1938 from the Middle Jurassic of Inner Mongolia of China (Diptera: Archisargidae) , 2009 .

[19]  B. Stuckenberg.  A revised generic classification of the wormlion flies of Southern Africa previously placed in Lampromyia Macquart , with reinstatement of Leptynoma Westwood 1876 , and descriptions of a new subgenus and two new species ( Diptera , Vermileonidae ) , 2009 .

[20]  Pablo A. Goloboff,et al.  TNT, a free program for phylogenetic analysis , 2008 .

[21]  D. Ren,et al.  Middle Jurassic fossils of the genus Sharasargus from Inner Mongolia, China (Diptera: Archisargidae) , 2008 .

[22]  D. Ren,et al.  The oldest Calosargus Mostovski, 1997 from the Middle Jurassic of China (Diptera: Brachycera: Archisargidae) , 2007 .

[23]  D. Ren,et al.  The earliest species of the extinct genus Archisargus from China (Diptera: Brachycera: Archisargidae) , 2007 .

[24]  H. Zhang,et al.  Two new species of Archisargids (Insecta : Diptera : Archisargidae) from the Upper Jurassic Daohugou Formation (Inner Mongolia, Norheastern China) , 2003 .

[25]  R. Cruickshank,et al.  Geology of an amber locality in the Hukawng Valley, Northern Myanmar , 2003 .

[26]  D. Grimaldi,et al.  Fossiliferous Cretaceous Amber from Myanmar (Burma): Its Rediscovery, Biotic Diversity, and Paleontological Significance , 2002 .

[27]  A. Ross,et al.  A review of the history, geology, and age of Burmese amber (Burmite) , 2000 .

[28]  B. Stuckenberg.  Antennal evolution in the Brachycera (Diptera), with a reassessment of terminology relating to the flagellum , 1999 .

[29]  D. Grimaldi,et al.  Brachyceran Diptera in Cretaceous ambers and Mesozoic diversification of the Eremoneura. , 1999 .

[30]  Ding Yang,et al.  A REVIEW OF EXTINCT MESOZOIC GENERA AND FAMILIES OF BRACHYCERA (INSECTA, DIPTERA, ORTHORRHAPHA) , 1998 .

[31]  R. Dong.  LATE JURASSIC BRACHYCERA FROM NORTHEASTERN CHINA (INSECTA: DIPTERA) , 1998 .

[32]  D. Ren,et al.  A NEW GENUS AND TWO NEW SPECIES OF SHORT‐HORNED FLIES OF UPPER JURASSIC FROM NORTHEAST CHINA: (DIPTERA: EREMOCHAETIDAE) * , 1995 .

[33]  D. Usachev.  New Jurassic Asilomorpha (Diptera) of the Karatau , 1968 .