Fleas are parasitic scorpionflies

  title={Fleas are parasitic scorpionflies},
  author={Erik Tihelka and Mattia Giacomelli and Diying Huang and Davide Pisani and Philip C. J. Donoghue and Chenyang Cai},
Fleas (Siphonaptera) are medically important blood-feeding insects responsible for spreading pathogens such as plague, murine typhus, and myxomatosis. The peculiar morphology of fleas resulting from their specialised ectoparasitic lifestyle has meant that the phylogenetic position of this diverse and medically important group has remained one of the most persistent problems in insect evolution. Here we test competing hypotheses on the contentious evolutionary relationships of fleas and… 

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