A fossil caddisfly (Insecta: Trichoptera) from the Eocene of Colorado

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A new genus and species of fossil caddisfly (Insecta: Trichoptera) from the Lower Eocene (Ypresian) Green River For-mation of Colorado is described. Litholimnephilops yinani gen. et sp. nov. is the first adult caddisfly to be described from the Green River Formation, and is characterized by large adult body size, presence of ocelli, dark leg spines, and a lack of terminal crossveins in the anterior anastomosis region of the forewings. Terminal genitalia are not visible in the preserved specimen. Familial placement is uncertain, though similarities with the families Limnephilidae and Phryganeidae are ob-served.

Original languageEnglish (US)
Pages (from-to)389-394
Number of pages6
Issue number2
StatePublished - Apr 4 2018


  • Amphiesmenoptera
  • Fossil insect
  • New genus
  • New species
  • Parachute Creek Member

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology


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