Anaxyelidae

Anaxyelidae is a family of incense cedar wood wasps in the order Hymenoptera. It contains only one living genus, Syntexis, which has only a single species, native to Western North America.^[1][2][3] Fossils of the family extend back to the Middle Jurassic, belonging to over a dozen extinct genera, with a particularly high diversity during the Early Cretaceous. Syntexis lay eggs in the sapwood of conifers, preferring recently burnt wood.^[4]

Anaxyelidae Temporal range: Middle Jurassic–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Syntexis libocedrii
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Clade:	Unicalcarida
Superfamily:	Siricoidea
Family:	Anaxyelidae Martynov 1925
Genera
See text

Genera

These genera belong to the family Anaxyelidae:

Taxonomy after^[4]

• Subfamily Syntexinae
  • Syntexis Rohwer, 1915 Western North America, Recent
  • † Cretosyntexis Rasnitsyn & Martinez-Delclos, 2000 La Pedrera de Rubies Formation, Spain, Early Cretaceous (Barremian)
  • † Curiosyntexis Kopylov, 2019^[5] Ola Formation Russia, Late Cretaceous (Campanian)
  • † Daosyntexis Kopylov, Rasnitsyn, Zhang & Zhang, 2020 Daohugou, China, Middle Jurassic (Callovian)^[6]
  • † Dolichosyntexis Kopylov, 2019^[5] Zaza Formation, Russia, Early Cretaceous (Aptian)
  • † Eosyntexis Rasnitsyn, 1990 Purbeck Group, United Kingdom, Early Cretaceous (Berriasian) La Pedrera de Rubies Formation, Spain, Early Cretaceous (Barremian), Turga Formation, Russia, Aptian, Spanish amber, Early Cretaceous (Albian)
  • † Orthosyntexis J. Gao, Engel, Shih, & T. Gao, 2021 Burmese amber, Myanmar, Late Cretaceous (Cenomanian)^[4]
  • † Parasyntexis Kopylov, 2019^[5] Khasurty, Zaza Formation, Russia, Early Cretaceous (Aptian)
  • † Sclerosyntexis Wang, Ren, Kopylov & Gao, 2020 Burmese amber, Myanmar, Late Cretaceous (Cenomanian)^[7]
• Subfamily Anaxyelinae
  • † Anasyntexis Rasnitsyn, 1968 Karabastau Formation, Middle/Late Jurassic (Callovian-Oxfordian)
  • † Anaxyela Martynov, 1925 Karabastau Formation, Middle/Late Jurassic (Callovian-Oxfordian)
  • † Brachysyntexis Rasnitsyn, 1969 Daohugou, China, Middle Jurassic (Callovian), Karabastau Formation, Middle/Late Jurassic (Callovian-Oxfordian), Yixian Formation, China, Aptian, Khasurty, Zaza Formation, Russia, Early Cretaceous (Aptian)
  • † Dolichostigma Rasnitsyn, 1968 Zaza Formation, Russia, Early Cretaceous (Aptian)
  • † Kempendaja Rasnitsyn, 1968 Khaya Formation, Russia, Late Jurassic (Tithonian)
  • † Kulbastavia Rasnitsyn, 1968 Karabastau Formation, Middle/Late Jurassic (Callovian-Oxfordian)
  • † Mangus Kopylov, 2019^[5] Dzun-Bain Formation, Mongolia, Early Cretaceous (Aptian)
  • † Sphenosyntexis Rasnitzyn, 1969 Karabastau Formation, Middle/Late Jurassic (Callovian-Oxfordian)
  • † Syntexyela Rasnitsyn, 1968 Karabastau Formation, Middle/Late Jurassic (Callovian-Oxfordian), Yixian Formation, China, Aptian
  • † Urosyntexis Rasnitzyn, 1969 Karabastau Formation, Middle/Late Jurassic (Callovian-Oxfordian), Khasurty, Zaza Formation, Russia, Early Cretaceous (Aptian)