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Published: 2022-09-22

Palleptoceridae fam. nov., an extinct leptoceroid family in mid-Cretaceous Burmese amber (Insecta, Trichoptera)

Universität zu Köln, Institute of Biology and its Didactics, Herbert Lewinstraße 2, 50931 Cologne, Germany
Friedhofstraße 9, 66894 Käshofen, Germany
Insecta Trichoptera Leptoceroidea Sexual dimorphism West Burma Block Gondwana Laurasia paleobiota


The family Palleptoceridae fam. nov. is proposed as a new extinct family of the superfamily Leptoceroidea. It is characterized by the absence of ocelli, the presence of five-segmented maxillary palps in both sexes, antennae longer than the forewings, and the tibial spur in the form of 2/4/4. The extinct Palleptoceridae is closely related to the leptoceroid family Leptoceridae, but the formula for the adult tibial spur is reduced from 2/4/4 to 2/2/4 (Morse, 1981). The Palleptocerus grimaldii sp. nov. from the mid-Cretaceous Burmese amber is furthermore characterized by the sexual dimorphic wing venation. In the forewings, the apical forks I and V are present in the male and forks I, III, and V in the female; in the hind wings of both sexes, exclusively the apical fork V is present. The Leptoceroidea originated and evolved in Gondwana. Palleptocerus grimaldii sp. nov. is interpreted as a relict species of the Gondwanan Leptoceroidea in Burmese amber.


  1. Čerňanský, A., Stanley, E., Daza, J., Bolet, A., Arias, S., Bauer, A., Vidal García, M., Bevitt, J., Peretti, A., Aung, N. & Evans, S. (2022) A new Early Cretaceous lizard in Myanmar amber with exceptionally preserved integument. Scientific Reports, 12, 1660.
  2. Dias, E.S. (2020) Systematic and biogeography of Leptoceridae (Trichoptera) with review of Achoropsyche Holzenthal, 1984. Tese de Doutorado, Universidade de São Paulo, vi+106 pp.
  3. Kania, I., Wang, B. & Szwedo, J. (2015) Dicranoptycha Osten Sacken, 1860 (Diptera, Limoniidae) from the earliest Upper Cretaceous Burmese amber. Cretaceous Research, 52, 522–530.
  4. Kirby, W. (1813) Strepsiptera, a new order of insects proposed, and the characters of the order, with those of its genera. Transactions of the Linnean Society of London, Zoology, 11, 86–122.
  5. Leach, W.E. (1815) Entomology. In: Brewster, A. (Ed.), The Edinburgh Encyclopedia, 1, 57–172.
  6. Malm, T. & Johanson, K.A. (2011) A new classification of the long-horned caddisflies (Trichoptera: Leptoceridae) based on molecular data. BMC Evolutionary Biology, 11 (10), 1–17.
  7. Malm, T., Johanson, K.A. & Wahlberg, N. (2013) The evolutionary history of Trichoptera (Insecta): a case of successful adaptation to life in freshwater. Systematic Entomology, 38, 459–473.
  8. Martynov, A.V. (1924) Rucheiniki [caddisflies] (Trichoptera). In: Bogdanov-Kat’kov, N.N. (Ed.), Prakticheskaya entomologiya [Practical entomology]. Vol. 5, Leningrad, pp. 1–388. [In Russian]
  9. Mashimo, Y., Müller, P. & Beutel, R. (2019) Zorotypus pecten, a new species of Zoraptera (Insecta) from mid-Cretaceous Burmese amber. Zootaxa, 4651 (1), 565–577.
  10. Metcalfe, I. (2013) Gondwana dispersion and Asian accretion: tectonic and palaeogeographic evolution of eastern Tethys. Journal of Asian Earth Sciences, 66:1–33.
  11. Metcalfe, I. (2017) Tectonic evolution of Sundaland. Bulletin of the Geological Society of Malaysia, 63, 27–60.
  12. Morse, J.C. (1981) A phylogeny and classification of family-group taxa of Leptoceridae (Trichoptera). Proceedings of the 3rd International Symposium on Trichoptera. Series Entomologia, Dr. W. Junk, The Hague, pp. 257–264.
  13. Oliveira, I., Bai, M., Jahn. H., Gross, V., Martin, C., Hammel, J., Zhang, W. & Mayer, G. (2016) Earliest Onychophoran in amber reveals Gondwanan migration patterns. Current Biology, 26, 2594–2601.
  14. Pohl, H., Wipfler, B., Boudinot, B. & Beutel, R.-G. (2021) On the value of Burmese amber for understanding insect evolution: Insights from †Heterobathmilla—an exceptional stem group genus of Strepsiptera (Insecta). Cladistics, 37, 211–229.
  15. Poinar, G.O. Jr. (2018) Burmese amber: evidence of Gondwanan origin and Cretaceous dispersion. Historical Biology, 31, 1304–1309.
  16. Shi, G., Grimaldi, D.A., Harlow, G.E., Wang, J., Yang, M., Lei, W., Li, Q. & Li, X. (2012) Age constraint on Burmese amber based on U-Pb dating of zircons. Cretaceous Research, 37, 155–163.
  17. Thomas, J. A., Frandsen, P. B., Prendini, E, Zhou, X. & Holzenthal, R.W. (2020) A multigene phylogeny and timeline for Trichoptera (Insecta). Systematic Entomology, 45, 670–686.
  18. Wichard, W. (2021) Overview of the caddisflies (Insecta, Trichoptera) in mid-Cretaceous Burmese amber. Cretaceous Research, 119, 104707.
  19. Wichard, W., Ross, E. & Ross, A. (2011) Palerasnitsynus gen. n. (Trichoptera, Psychomyiidae) from Burmese amber. ZooKeys, 130, 323–330.
  20. Wichard, W., Müller, P. & Wang, B. (2018) The psychomyiid genus Palerasnitsynus (Insecta, Trichoptera) in mid-Cretaceous Burmese amber. Palaeodiversity, 11, 151–166.