Idelinellidae

Idelinellidae Temporal range: Permian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Eoblattida
Family:	Idelinellidae Storozhenko, 1997
Genera
See text.

Idelinellidae is an extinct family of insects from the Permian and possibly the Late Carboniferous. They closely resemble members of the family Stenoneuridae. ^[1]

Classification history

Idelinellidae was originally established by Storozhenko (1997) to house the genus Idelinella (described from a fossil preserving only a fragment of a forewing), which had previously been included in the family Ideliidae. Idelinellidae itself was classified in the suborder Grylloblattina of the order Grylloblattida (including extant Grylloblattidae as well as many extinct families). ^[2] In 2004, Aristov transferred the genus Permostriga from Kortshakoliidae to Idelinellidae and described Sylvastriga from the Tshekarda locality in the Koshelevka Formation. ^[3] In 2012, Aristov and Rasnitsyn transferred the family to the order Eoblattida, and revised the family to include five more genera. ^[1] Aristov later transferred the genus Permeoblatta to the family Protophasmatidae in 2015. ^[4] Cui et al. (2024) consider most members of the family as representatives of the total group of Xenonomia (except Strigulla and Rasstriga), though the authors avoided using family names in their data set. ^[5]

Included genera and species

The family consists of the following genera and species: ^{[1] [4]}

• IdelinellaStorozhenko, 1992 – Iva-Gora Beds Formation, Russia, Middle Permian (Roadian)
  • Idelinella macropteraStorozhenko, 1992 (known from a forewing fragment)
• PermostrigaNovokshonov, 1999 – Koshelevka Formation, Russia, Early Permian (Kungurian)
  • Permostriga augustalisNovokshonov, 1999 (known from forewings and a complete body)
• SylvastrigaAristov, 2004 – Koshelevka Formation, Russia, Early Permian (Kungurian)
  • Sylvastriga mirandaAristov, 2004 (known from forewing fragment)
• Strigulla Aristov & Rasnitsyn, 2012 – Koshelevka Formation, Russia, Early Permian (Kungurian)
  • Strigulla cuculiophora(Aristov, 2002) (known from complete body)
• Cucullistriga Aristov & Rasnitsyn, 2012 – Koshelevka Formation, Russia, Early Permian (Kungurian)
  • Cucullistriga cucullataAristov & Rasnitsyn, 2012 (known from complete body)
• Scutistriga Aristov & Rasnitsyn, 2012 – Koshelevka Formation, Russia, Early Permian (Kungurian)
  • Scutistriga scutataAristov & Rasnitsyn, 2012 (known from complete body)
• ? Rasstriga Aristov & Rasnitsyn, 2012 – Mazon Creek, Carbondale Formation, United States, Late Carboniferous (Desmoinesian); tentatively included in the family
  • ?Rasstriga americanaAristov & Rasnitsyn, 2012 (known from incomplete body)

PermeoblattaRasnitsyn & Aristov, 2010 (including the species Permeoblatta borealisRasnitsyn & Aristov, 2010) from the Late Permian (Wuchiapingian)-aged Poldarsa Formation of Russia was formerly included in the family until 2015, when it was transferred to the family Protophasmatidae. ^[4]

References

1. Aristov, D. S.; Rasnitsyn, A. P. (2012). "Revision of the family Idelinellidae, with a review of the Permian Eoblattida (Insecta)". Paleontological Journal . 46 (1): 49–60. doi:10.1134/S0031030112010030. S2CID   140189151.
2. Storozhenko, S. Yu. (1997). "Classification of the order Grylloblattida (Insecta), with description of new taxa" (PDF). Far Eastern Entomologist. 42: 1–20. Retrieved 1 November 2025.
3. Aristov, D. S. (2004). "The fauna of grylloblattid insects (Grylloblattida) of the Lower Permian Locality of Tshekarda". Paleontological Journal. 38 (Suppl. 2): 80–145.
4. Aristov, D. S. (2015). "Classification of the order Eoblattida (Insecta: Blattidea) with description of new taxa" (PDF). Far Eastern Entomologist (301): 1–56. Retrieved 1 November 2025.
5. Cui, Yingying; Bardin, Jérémie; Wipfler, Benjamin; Demers‐Potvin, Alexandre; Bai, Ming; Tong, Yi‐Jie; Chen, Grace Nuoxi; Chen, Huarong; Zhao, Zhen‐Ya; Ren, Dong; Béthoux, Olivier (2024-03-07). "A winged relative of ice‐crawlers in amber bridges the cryptic extant Xenonomia and a rich fossil record" . Insect Science. doi:10.1111/1744-7917.13338. ISSN   1672-9609.