Triasacarus

Triasacarus fedelei is an extinct species of gall mite described from the Carnian of northeastern Italy. It lived as a parasite of Cheirolepidiaceae trees. The only known specimen, preserved in amber, is 0.210 mm long.[1] Along with Ampezzoa triassica and an unnamed dipteran, it is the oldest arthropod found enclosed in amber.[2]

Triasacarus
Temporal range: Late Triassic Carnian
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Subclass: Acari
Order: Trombidiformes
Genus: Triasacarus
Species:
T. fedelei
Binomial name
Triasacarus fedelei
Schmidt et al., 2012

It is possible that Triasacarus induced the formation of galls on the host plant.[1]

References

  1. Schmidt, A. R.; Jancke, S.; Lindquist, E. E.; Ragazzi, E.; Roghi, G.; Nascimbene, P. C.; Schmidt, K.; Wappler, T.; Grimaldi, D. A. (2012). "Arthropods in amber from the Triassic Period". Proceedings of the National Academy of Sciences. 109 (37): 14796. doi:10.1073/pnas.1208464109. PMC 3443139. PMID 22927387.
  2. "Oldest Occurrence of Arthropods Preserved in Amber: Fly, Mite Specimens Are 100 Million Years Older Than Previous Amber Inclusions". ScienceDaily. Retrieved 22 May 2013.


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